problem_id stringlengths 6 6 | language stringclasses 2 values | original_status stringclasses 3 values | original_src stringlengths 19 243k | changed_src stringlengths 19 243k | change stringclasses 3 values | i1 int64 0 8.44k | i2 int64 0 8.44k | j1 int64 0 8.44k | j2 int64 0 8.44k | error stringclasses 270 values | stderr stringlengths 0 226k |
|---|---|---|---|---|---|---|---|---|---|---|---|
p02973 | C++ | Runtime Error | #include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef pair<int, int> pii;
long long MOD = 1000000000 + 7;
int main() {
cout << setprecision(10);
int N;
cin >> N;
deque<ll> q;
for (int i = 0; i < N; i++) {
ll tmp;
cin >> tmp;
auto itr = lower_bound(q.begin(), q.end(), tmp);
int index = distance(itr, q.begin());
if (index == 0) {
q.push_front(tmp);
} else {
q[index - 1] = tmp;
}
}
cout << q.size() << endl;
}
| #include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef pair<int, int> pii;
long long MOD = 1000000000 + 7;
int main() {
cout << setprecision(10);
int N;
cin >> N;
deque<ll> q;
for (int i = 0; i < N; i++) {
ll tmp;
cin >> tmp;
auto itr = lower_bound(q.begin(), q.end(), tmp);
int index = distance(q.begin(), itr);
if (index == 0) {
q.push_front(tmp);
} else {
q[index - 1] = tmp;
}
}
cout << q.size() << endl;
}
| replace | 18 | 19 | 18 | 19 | 0 | |
p02973 | C++ | Runtime Error | #include <algorithm>
#include <iostream>
#include <vector>
using namespace std;
int main() {
int n;
cin >> n;
vector<long> group;
for (int i = 0; i < n; i++) {
long a;
cin >> a;
if (group.size() == 0 || group[0] > a) {
// cout << "Insert top " << a << endl;
group.insert(group.begin(), a);
} else {
auto pos = lower_bound(group.begin(), group.end(), a);
--pos;
// cout << "Update " << *pos << " to " << a << endl;
*pos = a;
}
}
cout << group.size() << endl;
} | #include <algorithm>
#include <iostream>
#include <vector>
using namespace std;
int main() {
int n;
cin >> n;
vector<long> group;
for (int i = 0; i < n; i++) {
long a;
cin >> a;
if (group.size() == 0 || group[0] >= a) {
// cout << "Insert top " << a << endl;
group.insert(group.begin(), a);
} else {
auto pos = lower_bound(group.begin(), group.end(), a);
--pos;
// cout << "Update " << *pos << " to " << a << endl;
*pos = a;
}
}
cout << group.size() << endl;
} | replace | 14 | 15 | 14 | 15 | 0 | |
p02973 | C++ | Runtime Error | #include <bits/stdc++.h>
using namespace std;
typedef long long ll;
#define rep(i, n) for (int i = 0, i##_len = (n); i < i##_len; i++)
#define reps(i, s, n) for (int i = (s), i##_len = (n); i < i##_len; i++)
#define rrep(i, n) for (int i = (n)-1; i >= 0; i--)
#define rreps(i, e, n) for (int i = (n)-1; i >= (e); i--)
#define all(x) (x).begin(), (x).end()
#define sz(x) ((int)(x).size())
#define uniq(x) (x).erase(unique((x).begin(), (x).end()), (x).end())
int main() {
cin.tie(0);
ios::sync_with_stdio(false);
// std::ifstream in("input.txt");
// std::cin.rdbuf(in.rdbuf());
int n;
cin >> n;
multiset<int> s;
rep(i, n) {
int a;
cin >> a;
auto it = s.lower_bound(a);
if ((sz(s) > 0) && (*(--it) < a))
s.erase(it);
s.insert(a);
}
cout << sz(s) << endl;
return 0;
}
| #include <bits/stdc++.h>
using namespace std;
typedef long long ll;
#define rep(i, n) for (int i = 0, i##_len = (n); i < i##_len; i++)
#define reps(i, s, n) for (int i = (s), i##_len = (n); i < i##_len; i++)
#define rrep(i, n) for (int i = (n)-1; i >= 0; i--)
#define rreps(i, e, n) for (int i = (n)-1; i >= (e); i--)
#define all(x) (x).begin(), (x).end()
#define sz(x) ((int)(x).size())
#define uniq(x) (x).erase(unique((x).begin(), (x).end()), (x).end())
int main() {
cin.tie(0);
ios::sync_with_stdio(false);
// std::ifstream in("input.txt");
// std::cin.rdbuf(in.rdbuf());
int n;
cin >> n;
multiset<int> s;
rep(i, n) {
int a;
cin >> a;
auto it = s.lower_bound(a);
if ((sz(s) > 0) && (it != s.begin()) && (*(--it) < a))
s.erase(it);
s.insert(a);
}
cout << sz(s) << endl;
return 0;
}
| replace | 23 | 24 | 23 | 24 | 0 | |
p02973 | C++ | Time Limit Exceeded | #include <algorithm>
#include <bitset>
#include <cmath>
#include <cstdlib>
#include <cstring>
#include <iostream>
#include <map>
#include <math.h>
#include <queue>
#include <sstream>
#include <stack>
#include <stdlib.h>
#include <string>
#include <vector>
using namespace std;
typedef long long ll;
int main() {
int N;
cin >> N;
vector<ll> A(N);
for (int i = 0; i < N; i++) {
cin >> A[i];
}
vector<ll> p_que;
int ans = 1;
p_que.push_back(A[0]);
for (int i = 1; i < N; i++) {
auto itr = lower_bound(p_que.begin(), p_que.end(), A[i]);
int dist = itr - p_que.begin();
if (dist == 0) {
ans++;
p_que.push_back(A[i]);
sort(p_que.begin(), p_que.end());
} else {
p_que[dist - 1] = A[i];
}
}
cout << ans << endl;
return 0;
} | #include <algorithm>
#include <bitset>
#include <cmath>
#include <cstdlib>
#include <cstring>
#include <iostream>
#include <map>
#include <math.h>
#include <queue>
#include <sstream>
#include <stack>
#include <stdlib.h>
#include <string>
#include <vector>
using namespace std;
typedef long long ll;
int main() {
int N;
cin >> N;
vector<ll> A(N);
for (int i = 0; i < N; i++) {
cin >> A[i];
}
vector<ll> p_que;
int ans = 1;
p_que.push_back(A[0]);
for (int i = 1; i < N; i++) {
auto itr = lower_bound(p_que.begin(), p_que.end(), A[i]);
int dist = itr - p_que.begin();
if (dist == 0) {
ans++;
p_que.insert(p_que.begin(), A[i]);
} else {
p_que[dist - 1] = A[i];
}
}
cout << ans << endl;
return 0;
} | replace | 33 | 35 | 33 | 34 | TLE | |
p02973 | C++ | Time Limit Exceeded | // warm heart, wagging tail,and a smile just for you!
// ███████████
// ███╬╬╬╬╬╬╬╬╬╬███
// ███╬╬╬╬╬████╬╬╬╬╬╬███
// ███████████
// ██╬╬╬╬╬████╬╬████╬╬╬╬╬██
// █████████╬╬╬╬╬████████████╬╬╬╬╬██╬╬╬╬╬╬███╬╬╬╬╬██
// ████████╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬█████████╬╬╬╬╬╬██╬╬╬╬╬╬╬██
// ████╬██╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬█████████╬╬╬╬╬╬╬╬╬╬╬██
// ███╬╬╬█╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬██╬╬███╬╬╬╬╬╬╬█████
// ███╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬██╬╬╬████████╬╬╬╬╬██
// ███╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬███╬╬╬╬╬╬╬╬╬███
// ███╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬█████╬╬╬╬╬╬╬██
// ████╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬████╬╬╬╬╬████
// █████████████╬╬╬╬╬╬╬╬██╬╬╬╬╬████╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬█████╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬███╬╬╬╬██████
// ████╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬██╬╬██████╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬██████╬╬╬╬╬╬╬███████████╬╬╬╬╬╬╬╬██╬╬╬██╬╬╬██
// ███╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬██╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬██╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬████╬╬╬╬╬╬╬╬╬╬╬█╬╬╬╬╬╬╬██╬╬╬╬╬╬╬╬██
// ██╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬██╬╬╬╬▓▓▓▓▓▓╬╬╬████╬╬████╬╬╬╬╬╬╬▓▓▓▓▓▓▓▓██╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬██╬╬╬╬╬╬╬███
// ██╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬██████▓▓▓▓▓▓▓╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬▓▓▓▓▓▓▓██╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬██╬╬╬╬█████
// ███╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬███╬╬╬╬╬██╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬█████╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬████████
// ███╬╬╬╬╬╬╬╬╬╬╬╬╬█████╬╬╬╬╬╬╬╬██╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬███╬╬██╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬██
// ██████████████
// ████╬╬╬╬╬╬███████████████████████████╬╬╬╬╬██╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬████
// ███████ █████
// ███████████████████
#include "bits/stdc++.h"
using namespace std;
#define MOD 1000000007
// #define MOD 998244353
const double EPS = 1e-9;
#define INF (1LL << 60)
#define D double
#define fs first
#define sc second
#define int long long
#define FOR(i, a, b) for (int i = (a); i < (b); ++i)
#define RFOR(i, a, b) for (int i = (b - 1); i >= (a); --i)
#define REP(i, n) FOR(i, 0, (n))
#define RREP(i, n) RFOR(i, 0, (n))
#define ITR(itr, mp) for (auto itr = (mp).begin(); itr != (mp).end(); ++itr)
#define RITR(itr, mp) for (auto itr = (mp).rbegin(); itr != (mp).rend(); ++itr)
#define range(i, a, b) ((a) <= (i) && (i) < (b))
#define debug(x) cout << #x << " = " << (x) << endl;
#define SP << " " <<
typedef pair<int, int> P;
typedef vector<int> vec;
typedef vector<vector<int>> mat;
signed main() {
ios::sync_with_stdio(false);
cin.tie(0);
int n;
cin >> n;
vector<int> a(n);
REP(i, n) cin >> a[i];
multiset<int> st;
REP(i, n) {
if (i == 0) {
st.insert(-a[i]);
continue;
}
auto itr = upper_bound(st.begin(), st.end(), -a[i]);
if (itr == st.end())
st.insert(-a[i]);
else {
st.erase(itr);
st.insert(-a[i]);
}
}
cout << st.size() << endl;
return 0;
} | // warm heart, wagging tail,and a smile just for you!
// ███████████
// ███╬╬╬╬╬╬╬╬╬╬███
// ███╬╬╬╬╬████╬╬╬╬╬╬███
// ███████████
// ██╬╬╬╬╬████╬╬████╬╬╬╬╬██
// █████████╬╬╬╬╬████████████╬╬╬╬╬██╬╬╬╬╬╬███╬╬╬╬╬██
// ████████╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬█████████╬╬╬╬╬╬██╬╬╬╬╬╬╬██
// ████╬██╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬█████████╬╬╬╬╬╬╬╬╬╬╬██
// ███╬╬╬█╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬██╬╬███╬╬╬╬╬╬╬█████
// ███╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬██╬╬╬████████╬╬╬╬╬██
// ███╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬███╬╬╬╬╬╬╬╬╬███
// ███╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬█████╬╬╬╬╬╬╬██
// ████╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬████╬╬╬╬╬████
// █████████████╬╬╬╬╬╬╬╬██╬╬╬╬╬████╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬█████╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬███╬╬╬╬██████
// ████╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬██╬╬██████╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬██████╬╬╬╬╬╬╬███████████╬╬╬╬╬╬╬╬██╬╬╬██╬╬╬██
// ███╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬██╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬██╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬████╬╬╬╬╬╬╬╬╬╬╬█╬╬╬╬╬╬╬██╬╬╬╬╬╬╬╬██
// ██╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬██╬╬╬╬▓▓▓▓▓▓╬╬╬████╬╬████╬╬╬╬╬╬╬▓▓▓▓▓▓▓▓██╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬██╬╬╬╬╬╬╬███
// ██╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬██████▓▓▓▓▓▓▓╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬▓▓▓▓▓▓▓██╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬██╬╬╬╬█████
// ███╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬███╬╬╬╬╬██╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬█████╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬████████
// ███╬╬╬╬╬╬╬╬╬╬╬╬╬█████╬╬╬╬╬╬╬╬██╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬███╬╬██╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬██
// ██████████████
// ████╬╬╬╬╬╬███████████████████████████╬╬╬╬╬██╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬████
// ███████ █████
// ███████████████████
#include "bits/stdc++.h"
using namespace std;
#define MOD 1000000007
// #define MOD 998244353
const double EPS = 1e-9;
#define INF (1LL << 60)
#define D double
#define fs first
#define sc second
#define int long long
#define FOR(i, a, b) for (int i = (a); i < (b); ++i)
#define RFOR(i, a, b) for (int i = (b - 1); i >= (a); --i)
#define REP(i, n) FOR(i, 0, (n))
#define RREP(i, n) RFOR(i, 0, (n))
#define ITR(itr, mp) for (auto itr = (mp).begin(); itr != (mp).end(); ++itr)
#define RITR(itr, mp) for (auto itr = (mp).rbegin(); itr != (mp).rend(); ++itr)
#define range(i, a, b) ((a) <= (i) && (i) < (b))
#define debug(x) cout << #x << " = " << (x) << endl;
#define SP << " " <<
typedef pair<int, int> P;
typedef vector<int> vec;
typedef vector<vector<int>> mat;
signed main() {
ios::sync_with_stdio(false);
cin.tie(0);
int n;
cin >> n;
vector<int> a(n);
REP(i, n) cin >> a[i];
multiset<int> st;
REP(i, n) {
if (i == 0) {
st.insert(-a[i]);
continue;
}
auto itr = st.upper_bound(-a[i]);
if (itr == st.end())
st.insert(-a[i]);
else {
st.erase(itr);
st.insert(-a[i]);
}
}
cout << st.size() << endl;
return 0;
} | replace | 64 | 65 | 64 | 65 | TLE | |
p02973 | C++ | Time Limit Exceeded | #include <algorithm>
#include <iostream>
#include <vector>
using namespace std;
int n, m = 1;
int a[100000];
int main() {
cin >> n;
for (int i = 0; i < n; i++)
cin >> a[i];
vector<pair<int, int>> c;
c.push_back(make_pair(a[n - 1], 1));
for (int i = n - 2; i >= 0; i--) {
if (a[i] >= c.back().first) {
m++;
c.push_back(make_pair(a[i], m));
} else {
int j = 0;
while (a[i] >= c[j].first)
j++;
c[j].first = a[i];
sort(c.begin(), c.end());
}
}
cout << m << endl;
return 0;
} | #include <algorithm>
#include <iostream>
#include <vector>
using namespace std;
int n, m = 1;
int a[100000];
int main() {
cin >> n;
for (int i = 0; i < n; i++)
cin >> a[i];
vector<pair<int, int>> c;
c.push_back(make_pair(a[n - 1], 1));
for (int i = n - 2; i >= 0; i--) {
if (a[i] >= c.back().first) {
m++;
c.push_back(make_pair(a[i], m));
} else {
int j = 0;
while (a[i] >= c[j].first)
j++;
c[j].first = a[i];
while (j > 0 && c[j].first < c[j - 1].first) {
swap(c[j], c[j - 1]);
j--;
}
}
}
cout << m << endl;
return 0;
} | replace | 28 | 29 | 28 | 33 | TLE | |
p02973 | C++ | Time Limit Exceeded | /*
これを入れて実行
g++ code.cpp
./a.out
*/
#include <algorithm>
#include <bitset>
#include <cmath>
#include <deque>
#include <iomanip>
#include <iostream>
#include <map>
#include <math.h>
#include <queue>
#include <set>
#include <stdio.h>
#include <string>
#include <tuple>
#include <unordered_map>
#include <utility>
#include <vector>
using namespace std;
typedef long long ll;
typedef long double ld;
int dy4[4] = {-1, 0, +1, 0};
int dx4[4] = {0, +1, 0, -1};
int dy8[8] = {-1, -1, 0, 1, 1, 1, 0, -1};
int dx8[8] = {0, 1, 1, 1, 0, -1, -1, -1};
const long long INF = 1LL << 60;
const ll MOD = 1e9 + 7;
bool greaterSecond(const pair<int, int> &f, const pair<int, int> &s) {
return f.second > s.second;
}
ll gcd(ll a, ll b) {
if (b == 0)
return a;
return gcd(b, a % b);
}
ll lcm(ll a, ll b) { return a / gcd(a, b) * b; }
ll nCr(ll n, ll r) {
if (r == 0 || r == n) {
return 1;
} else if (r == 1) {
return n;
}
return (nCr(n - 1, r) + nCr(n - 1, r - 1));
}
ll nPr(ll n, ll r) {
r = n - r;
ll ret = 1;
for (ll i = n; i >= r + 1; i--)
ret *= i;
return ret;
}
//-----------------------ここから-----------
int main(void) {
int n;
cin >> n;
vector<int> a(n);
for (int i = 0; i < n; i++)
cin >> a[i];
multiset<int> st;
for (int i = 0; i < n; i++) {
auto itr = lower_bound(st.begin(), st.end(), a[i]);
if (itr == st.begin()) {
st.insert(a[i]);
} else {
itr--;
st.erase(itr);
st.insert(a[i]);
}
}
cout << st.size() << endl;
} | /*
これを入れて実行
g++ code.cpp
./a.out
*/
#include <algorithm>
#include <bitset>
#include <cmath>
#include <deque>
#include <iomanip>
#include <iostream>
#include <map>
#include <math.h>
#include <queue>
#include <set>
#include <stdio.h>
#include <string>
#include <tuple>
#include <unordered_map>
#include <utility>
#include <vector>
using namespace std;
typedef long long ll;
typedef long double ld;
int dy4[4] = {-1, 0, +1, 0};
int dx4[4] = {0, +1, 0, -1};
int dy8[8] = {-1, -1, 0, 1, 1, 1, 0, -1};
int dx8[8] = {0, 1, 1, 1, 0, -1, -1, -1};
const long long INF = 1LL << 60;
const ll MOD = 1e9 + 7;
bool greaterSecond(const pair<int, int> &f, const pair<int, int> &s) {
return f.second > s.second;
}
ll gcd(ll a, ll b) {
if (b == 0)
return a;
return gcd(b, a % b);
}
ll lcm(ll a, ll b) { return a / gcd(a, b) * b; }
ll nCr(ll n, ll r) {
if (r == 0 || r == n) {
return 1;
} else if (r == 1) {
return n;
}
return (nCr(n - 1, r) + nCr(n - 1, r - 1));
}
ll nPr(ll n, ll r) {
r = n - r;
ll ret = 1;
for (ll i = n; i >= r + 1; i--)
ret *= i;
return ret;
}
//-----------------------ここから-----------
int main(void) {
int n;
cin >> n;
vector<int> a(n);
for (int i = 0; i < n; i++)
cin >> a[i];
multiset<int> st;
for (int i = 0; i < n; i++) {
auto itr = st.lower_bound(a[i]);
if (itr == st.begin()) {
st.insert(a[i]);
} else {
itr--;
st.erase(itr);
st.insert(a[i]);
}
}
cout << st.size() << endl;
} | replace | 76 | 77 | 76 | 77 | TLE | |
p02973 | C++ | Time Limit Exceeded | #include <bits/stdc++.h>
using namespace std;
using ll = long long;
#define rep(i, a, b) for (int i = (a); i < (b); i++)
int main() {
cin.tie(0);
ios::sync_with_stdio(false);
int n;
cin >> n;
vector<int> a(n);
rep(i, 0, n) cin >> a[i];
reverse(a.begin(), a.end());
vector<int> x;
x.push_back(1e9 + 100);
rep(i, 0, n) {
int j = upper_bound(x.begin(), x.end(), a[i]) - x.begin();
if (x[j] > 1e9) {
x[j] = a[i];
x.push_back(1e9 + 100);
} else {
x[j] = a[i];
sort(x.begin(), x.end());
}
}
cout << x.size() - 1 << endl;
return 0;
}
| #include <bits/stdc++.h>
using namespace std;
using ll = long long;
#define rep(i, a, b) for (int i = (a); i < (b); i++)
int main() {
cin.tie(0);
ios::sync_with_stdio(false);
int n;
cin >> n;
vector<int> a(n);
rep(i, 0, n) cin >> a[i];
reverse(a.begin(), a.end());
vector<int> x;
x.push_back(1e9 + 100);
rep(i, 0, n) {
int j = upper_bound(x.begin(), x.end(), a[i]) - x.begin();
if (x[j] > 1e9) {
x[j] = a[i];
x.push_back(1e9 + 100);
} else {
x[j] = a[i];
}
}
cout << x.size() - 1 << endl;
return 0;
}
| delete | 25 | 26 | 25 | 25 | TLE | |
p02973 | C++ | Time Limit Exceeded | #include <algorithm>
#include <cmath>
#include <deque>
#include <iomanip>
#include <iostream>
#include <map>
#include <queue>
#include <set>
#include <stack>
#include <string>
#include <tuple>
#include <utility>
#include <vector>
using namespace std;
#define rep(i, n) for (int i = 0; i < (n); i++)
using ll = long long;
int main() {
int N;
cin >> N;
vector<int> A(N);
rep(i, N) cin >> A[i];
multiset<int> mst;
mst.insert(A[N - 1]);
for (int i = N - 2; i >= 0; i--) {
if (A[i] <= *(mst.rbegin())) {
auto it = mst.upper_bound(A[i]);
if (it != mst.end()) {
int a = *it;
int num = mst.erase(*it);
rep(j, num - 1) mst.insert(a);
}
}
mst.insert(A[i]);
}
cout << mst.size() << endl;
return 0;
} | #include <algorithm>
#include <cmath>
#include <deque>
#include <iomanip>
#include <iostream>
#include <map>
#include <queue>
#include <set>
#include <stack>
#include <string>
#include <tuple>
#include <utility>
#include <vector>
using namespace std;
#define rep(i, n) for (int i = 0; i < (n); i++)
using ll = long long;
int main() {
int N;
cin >> N;
vector<int> A(N);
rep(i, N) cin >> A[i];
multiset<int> mst;
mst.insert(A[N - 1]);
for (int i = N - 2; i >= 0; i--) {
if (A[i] <= *(mst.rbegin())) {
auto beg = mst.upper_bound(A[i]);
auto en = beg;
en++;
if (beg != mst.end()) {
mst.erase(beg, en);
}
}
mst.insert(A[i]);
}
cout << mst.size() << endl;
return 0;
} | replace | 27 | 32 | 27 | 32 | TLE | |
p02973 | C++ | Time Limit Exceeded | #include <bits/stdc++.h>
using namespace std;
#define rep(i, n) for (ll i = 0; i < (ll)(n); i++)
#define rep1(i, n) for (ll i = 1; i < (ll)(n); i++)
#define INF 10000000000
#define MOD 998244353
using ll = long long;
using Graph = vector<vector<int>>;
int main() {
int N;
cin >> N;
vector<ll> A(N);
rep(i, N) cin >> A.at(i);
vector<ll> res;
res.push_back(A.at(N - 1));
for (int i = N - 2; i >= 0; i--) {
sort(begin(res), end(res));
auto iter = upper_bound(begin(res), end(res), A.at(i));
ll dist = distance(begin(res), iter);
if (dist == (ll)res.size()) {
res.push_back(A.at(i));
} else {
res.at(dist) = A.at(i);
}
}
cout << res.size() << endl;
}
| #include <bits/stdc++.h>
using namespace std;
#define rep(i, n) for (ll i = 0; i < (ll)(n); i++)
#define rep1(i, n) for (ll i = 1; i < (ll)(n); i++)
#define INF 10000000000
#define MOD 998244353
using ll = long long;
using Graph = vector<vector<int>>;
int main() {
int N;
cin >> N;
vector<ll> A(N);
rep(i, N) cin >> A.at(i);
vector<ll> res;
res.push_back(A.at(N - 1));
for (int i = N - 2; i >= 0; i--) {
// sort(begin(res),end(res));
auto iter = upper_bound(begin(res), end(res), A.at(i));
ll dist = distance(begin(res), iter);
if (dist == (ll)res.size()) {
res.push_back(A.at(i));
} else {
res.at(dist) = A.at(i);
}
}
cout << res.size() << endl;
}
| replace | 18 | 19 | 18 | 19 | TLE | |
p02973 | C++ | Time Limit Exceeded | #include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef long double ld;
const ll MOD = 1000000007;
// const ll MOD = 998244353;
const ll INF = MOD * MOD;
const long double EPS = 1e-12;
struct mint {
ll x;
mint(ll x = 0) : x((x % MOD + MOD) % MOD) {}
mint operator-() const { return mint(-x); }
mint &operator+=(const mint a) {
if ((x += a.x) >= MOD)
x -= MOD;
return *this;
}
mint &operator-=(const mint a) {
if ((x += MOD - a.x) >= MOD)
x -= MOD;
return *this;
}
mint &operator*=(const mint a) {
(x *= a.x) %= MOD;
return *this;
}
mint operator+(const mint a) const { return mint(*this) += a; }
mint operator-(const mint a) const { return mint(*this) -= a; }
mint operator*(const mint a) const { return mint(*this) *= a; }
mint pow(ll t) const {
if (!t)
return 1;
mint a = pow(t >> 1);
a *= a;
if (t & 1)
a *= *this;
return a;
}
// for prime mod
mint inv() const { return pow(MOD - 2); }
mint &operator/=(const mint a) { return *this *= a.inv(); }
mint operator/(const mint a) const { return mint(*this) /= a; }
};
istream &operator>>(istream &is, const mint &a) { return is >> a.x; }
ostream &operator<<(ostream &os, const mint &a) { return os << a.x; }
struct edge {
ll to, cost;
tuple<ll, ll> get_value() { return make_tuple(to, cost); }
};
struct fpoint {
ld x = 0;
ld y = 0;
bool operator<(const fpoint &p) const {
if (x == p.x)
return y < p.y;
return x < p.x;
}
bool operator==(const fpoint &p) const {
if (p.x - EPS < x && x < p.x + EPS && p.y - EPS < y && y < p.y + EPS)
return true;
return false;
}
bool operator!=(const fpoint &p) const {
if (p.x - EPS > x || x > p.x + EPS || p.y - EPS > y || y > p.y + EPS)
return true;
return false;
}
fpoint &operator+=(const ld a) {
x += a, y += a;
return *this;
}
fpoint &operator-=(const ld a) {
x -= a, y -= a;
return *this;
}
fpoint &operator*=(const ld a) {
x *= a, y *= a;
return *this;
}
fpoint &operator/=(const ld a) {
x /= a, y /= a;
return *this;
}
fpoint &operator+=(const fpoint p) {
x += p.x, y += p.y;
return *this;
}
fpoint &operator-=(const fpoint p) {
x -= p.x, y -= p.y;
return *this;
}
fpoint &operator*=(const fpoint p) {
x *= p.x, y *= p.y;
return *this;
}
fpoint &operator/=(const fpoint p) {
x /= p.x, y /= p.y;
return *this;
}
fpoint operator+(const fpoint p) const { return fpoint(*this) += p; }
fpoint operator-(const fpoint p) const { return fpoint(*this) -= p; }
fpoint operator*(const fpoint p) const { return fpoint(*this) *= p; }
fpoint operator/(const fpoint p) const { return fpoint(*this) /= p; }
fpoint operator+(const ld a) const { return fpoint(*this) += a; }
fpoint operator-(const ld a) const { return fpoint(*this) -= a; }
fpoint operator*(const ld a) const { return fpoint(*this) *= a; }
fpoint operator/(const ld a) const { return fpoint(*this) /= a; }
ld dot(const fpoint &p) const { return x * p.x + y * p.y; }
ll cross(const fpoint &p) const { return x * p.y - y * p.x; }
ld squared_norm() const { return x * x + y * y; }
ld norm() const { return sqrt(x * x + y * y); }
tuple<ld, ld> get_value() { return make_tuple(x, y); }
ll which_quadrant() const {
if (abs(x) < EPS && abs(y) < EPS)
return 0;
if (y > 0)
return x > 0 ? 1 : 2;
return x < 0 ? 3 : 4;
}
bool is_zero() {
fpoint z = {0, 0};
return z == *this;
}
};
struct point {
ll x = 0;
ll y = 0;
bool operator<(const point &p) const {
if (x == p.x)
return y < p.y;
return x < p.x;
}
bool operator==(const point &p) const {
if (x == p.x && y == p.y)
return true;
return false;
}
bool operator!=(const point &p) const {
if (x != p.x || y != p.y)
return true;
return false;
}
point &operator+=(const ll a) {
x += a, y += a;
return *this;
}
point &operator-=(const ll a) {
x -= a, y -= a;
return *this;
}
point &operator*=(const ll a) {
x *= a, y *= a;
return *this;
}
point &operator+=(const point p) {
x += p.x, y += p.y;
return *this;
}
point &operator-=(const point p) {
x -= p.x, y -= p.y;
return *this;
}
point &operator*=(const point p) {
x *= p.x, y *= p.y;
return *this;
}
void operator++(int) { x++, y++; }
void operator++() { x++, y++; }
void operator--(int) { x--, y--; }
void operator--() { x--, y--; }
point operator+(const point p) const { return point(*this) += p; }
point operator-(const point p) const { return point(*this) -= p; }
point operator*(const point p) const { return point(*this) *= p; }
point operator+(const ll a) const { return point(*this) += a; }
point operator-(const ll a) const { return point(*this) -= a; }
point operator*(const ll a) const { return point(*this) *= a; }
ll dot(const point &p) const { return x * p.x + y * p.y; }
ll cross(const point &p) const { return x * p.y - y * p.x; }
ll squared_norm() const { return x * x + y * y; }
tuple<ll, ll> get_value() { return make_tuple(x, y); }
ll which_quadrant() const {
if (x == 0 && y == 0)
return 0;
if (x >= 0 && y >= 0)
return 1;
else if (x <= 0 && y >= 0)
return 2;
else if (x <= 0 && y <= 0)
return 3;
else
return 4;
}
bool is_zero() {
point z = {0, 0};
return z == *this;
}
fpoint to_fpoint() {
fpoint ret = {ld(x), ld(y)};
return ret;
}
};
// angle_comparator
struct {
template <typename T> bool operator()(const T p1, const T p2) const {
ll q1 = p1.which_quadrant();
ll q2 = p2.which_quadrant();
if (q1 != q2)
return q1 < q2;
// judge for parallel lines
// if p1 cross p2 > 0 -> sin arg(p1 -> o -> p2) > 0
return p1.cross(p2) > 0;
}
} angle_comparator;
struct undirected_edge {
ll from;
ll to;
ll cost;
bool operator<(const undirected_edge &ue) const { return cost < ue.cost; }
tuple<ll, ll, ll> get_value() { return make_tuple(from, to, cost); }
};
struct event {
ll loc, val, sgn;
bool operator<(const event &e) const {
if (loc == e.loc)
return sgn == 1;
return loc < e.loc;
}
bool operator>(const event &e) const {
if (loc == e.loc)
return sgn == -1;
return loc > e.loc;
}
tuple<ll, ll, ll> get_value() { return make_tuple(loc, val, sgn); }
};
typedef std::pair<ll, ll> pl;
typedef std::tuple<ll, ll, ll> tp3;
typedef std::tuple<ll, ll, ll, ll> tp4;
typedef std::vector<ll> vl;
typedef std::vector<vl> vl2;
typedef std::vector<vl2> vl3;
typedef std::vector<vl3> vl4;
typedef std::vector<mint> vmi;
typedef std::vector<vmi> vmi2;
typedef std::vector<vmi2> vmi3;
typedef std::vector<vmi3> vmi4;
typedef std::vector<bool> vb;
typedef std::vector<vb> vb2;
typedef std::vector<vb2> vb3;
typedef std::vector<vb3> vb4;
typedef std::vector<pl> vpl;
typedef std::vector<tp3> vtp3;
typedef std::vector<tp4> vtp4;
typedef std::vector<point> points;
typedef std::vector<fpoint> fpoints;
// priority queue. Taking from the higher value. Don't forget calling !q.empty()
typedef std::priority_queue<ll> pq;
// priority queue. Taking from the lower value
typedef std::priority_queue<ll, vl, greater<ll>> pql;
typedef std::vector<vector<edge>> Graph;
const ll N_DIGITS = 60;
const long double PI = 3.14159265358979323846;
const points dirs = {{-1, 0}, {1, 0}, {0, 1}, {0, -1}, // four directions
{1, 1}, {-1, 1}, {-1, -1}, {1, -1}, // diagonal
{0, 0}}; // self
template <typename A, typename B> string to_string(pair<A, B> p);
template <typename A, typename B, typename C>
string to_string(tuple<A, B, C> p);
template <typename A, typename B, typename C, typename D>
string to_string(tuple<A, B, C, D> p);
string to_string(const string &s) { return '"' + s + '"'; }
string to_string(char c) { return string(1, c); }
string to_string(const char *s) { return to_string((string)s); }
string to_string(bool b) { return (b ? "true" : "false"); }
string to_string(mint a) { return to_string(a.x); }
string to_string(point p) {
return "{" + to_string(p.x) + ", " + to_string(p.y) + "}";
}
string to_string(fpoint p) {
return "{" + to_string(p.x) + ", " + to_string(p.y) + "}";
}
string to_string(edge e) {
return "{" + to_string(e.to) + ", " + to_string(e.cost) + "}";
}
template <typename A, typename B> string to_string(pair<A, B> p) {
return "(" + to_string(p.first) + ", " + to_string(p.second) + ")";
}
template <typename A, typename B, typename C>
string to_string(tuple<A, B, C> p) {
return "(" + to_string(get<0>(p)) + ", " + to_string(get<1>(p)) + ", " +
to_string(get<2>(p)) + ")";
}
template <typename A, typename B, typename C, typename D>
string to_string(tuple<A, B, C, D> p) {
return "(" + to_string(get<0>(p)) + ", " + to_string(get<1>(p)) + ", " +
to_string(get<2>(p)) + ", " + to_string(get<3>(p)) + ")";
}
string to_string(vector<bool> v) {
bool first = true;
string res = "{";
for (int i = 0; i < static_cast<int>(v.size()); i++) {
if (!first)
res += ", ";
first = false;
res += to_string(v[i]);
}
res += "}";
return res;
}
template <size_t N> string to_string(bitset<N> v) {
string res = "";
for (size_t i = 0; i < N; i++)
res += static_cast<char>('0' + v[i]);
return res;
}
template <typename A> string to_string(A v) {
bool first = true;
string res = "{";
for (const auto &x : v) {
if (!first) {
res += ", ";
}
first = false;
res += to_string(x);
}
res += "}";
return res;
}
template <typename T> string to_string(priority_queue<T> &q) {
priority_queue<T> copy;
bool first = true;
string res = "{";
while (!q.empty()) {
if (!first) {
res += ", ";
}
first = false;
res += to_string(q.top());
copy.push(q.top());
q.pop();
}
swap(q, copy);
res += "}";
return res;
}
template <typename T> string to_string(queue<T> &q) {
queue<T> copy;
bool first = true;
string res = "{";
while (!q.empty()) {
if (!first) {
res += ", ";
}
first = false;
res += to_string(q.front());
copy.push(q.front());
q.pop();
}
swap(q, copy);
res += "}";
return res;
}
void debug_out() { cerr << endl; }
template <typename Head, typename... Tail> void debug_out(Head H, Tail... T) {
cerr << " " << to_string(H);
debug_out(T...);
}
#define rep(i, n) for (ll(i) = 0; (i) < (n); (i)++)
#define revrep(i, n) for (ll(i) = (n)-1; (i) >= 0; (i)--)
#define For(i, a, b) for (ll(i) = (a); (i) < (b); (i)++)
#define revFor(i, b, a) for (ll(i) = (b)-1; (i) >= (a); (i)--)
#define all(a) (a).begin(), (a).end()
#define rall(a) (a).rbegin(), (a).rend()
#define isUpper(c) ('a' - (c) > 0)
#define isNum(c) (0 <= (c) - '0' && (c) - '0' <= 9)
#define toLower(c) char((c) + 0x20)
#define toUpper(c) char((c)-0x20)
#define pb push_back
#define mp make_pair
#define mt make_tuple
#define pr(a) std::cout << (a)
#define prl(a) std::cout << (a) << endl
#define prl2(a, b) std::cout << (a) << " " << (b) << endl
#define prl3(a, b, c) std::cout << (a) << " " << (b) << " " << (c) << endl
#define prl4(a, b, c, d) \
std::cout << (a) << " " << (b) << " " << (c) << " " << (d) << endl
#define prs(a) std::cout << (a) << " "
#define prs2(a, b) std::cout << (a) << " " << (b) << " "
#define prs3(a, b, c) std::cout << (a) << " " << (b) << " " << (c) << " "
#define prs4(a, b, c, d) \
std::cout << (a) << " " << (b) << " " << (c) << " " << (d) << " "
#define yn(condition) \
if ((condition)) \
prl("Yes"); \
else \
prl("No");
#define YN(condition) \
if ((condition)) \
prl("YES"); \
else \
prl("NO");
#define in1(a) cin >> (a)
#define in2(a, b) cin >> (a) >> (b)
#define in3(a, b, c) cin >> (a) >> (b) >> (c)
#define in4(a, b, c, d) cin >> (a) >> (b) >> (c) >> (d)
#define in5(a, b, c, d, e) cin >> (a) >> (b) >> (c) >> (d) >> (e)
#define in6(a, b, c, d, e, f) cin >> (a) >> (b) >> (c) >> (d) >> (e) >> (f)
#define in7(a, b, c, d, e, f, g) \
cin >> (a) >> (b) >> (c) >> (d) >> (e) >> (f) >> (g)
#define e1 first
#define e2 second
#define popcount(i) __builtin_popcountl((i))
#define Forchar(c, a, z) for (char(c) = (a); (c) <= (z); (c)++)
#define cntchar(s, c) count(all((s)), c)
#define substring(s, start, end) s.substr((start), (end) - (start) + 1)
#define prl_nd(num, digits) \
std::cout << fixed << setprecision(digits) << (num) << endl;
#define prl_time(s) \
prl3("Elapsed Time:", 1000.0 * (clock() - s) / CLOCKS_PER_SEC, "[ms]");
#define char_to_str(c) string(1, (c))
#ifdef _LOCAL
#define debug(...) cerr << "[" << #__VA_ARGS__ << "]:", debug_out(__VA_ARGS__)
#else
#define debug(...) 42
#endif
ll modf(ll x, ll m) { return (x % m + m) % m; }
template <class T> inline bool chmax(T &a, T b) {
if (a < b) {
a = b;
return true;
}
return false;
}
template <class T> inline bool chmin(T &a, T b) {
if (a > b) {
a = b;
return true;
}
return false;
}
struct MaxFlow {
struct F_edge {
ll to, rev, capacity;
F_edge(ll to, ll rev, ll capacity) : to(to), rev(rev), capacity(capacity) {}
};
typedef vector<F_edge> F_edges;
vector<F_edges> graph;
ll n_vertex;
// level is the shortest path to get a given node from the source node.
vl level, iter;
MaxFlow(ll n_vertex) : n_vertex(n_vertex) { graph.resize(n_vertex); }
void add_edge(ll from, ll to, ll capacity = 1) {
graph[from].pb({to, ll(graph[to].size()), capacity});
graph[to].pb({from, ll(graph[from].size()) - 1, 0});
}
void bfs(ll source) {
level = vl(n_vertex, -1);
level[source] = 0;
queue<ll> q;
q.push(source);
while (!q.empty()) {
ll vertex = q.front();
q.pop();
rep(i, graph[vertex].size()) {
ll target = graph[vertex][i].to;
ll cap_target = graph[vertex][i].capacity;
// if the flow can be into the target node, implement below.
if (cap_target > 0 && level[target] < 0) {
level[target] = level[vertex] + 1;
q.push(target);
}
}
}
}
ll dfs(ll vertex, ll sink, ll flow) {
if (vertex == sink)
return flow;
for (ll &i = iter[vertex]; i < graph[vertex].size(); i++) {
ll target = graph[vertex][i].to;
ll cap_target = graph[vertex][i].capacity;
ll rev_target = graph[vertex][i].rev;
// if capasitiy is not full yet and target is farther,
// then assign current flow.
if (cap_target > 0 && level[vertex] < level[target]) {
ll d = dfs(target, sink, min(cap_target, flow));
if (d > 0) { // if the flow successfully reaches the sink, reduce the
// flow from the capacity
graph[vertex][i].capacity -= d;
graph[target][rev_target].capacity += d;
return d;
}
}
}
return 0;
}
ll dinic(ll source, ll sink) {
// complexity O(EV^2)
ll flow = 0;
while (true) {
bfs(source);
// if there is no path leading to the sink, the maximum flow is 0.
if (level[sink] < 0)
return flow;
iter = vl(n_vertex, 0);
ll f;
while ((f = dfs(source, sink, INF)) > 0)
flow += f;
}
}
};
struct UnionFind {
vl parents, set_size;
set<ll> root_idx;
ll n_groups;
UnionFind(ll n) {
parents = set_size = vl(n);
n_groups = n;
rep(i, n) {
parents[i] = i;
set_size[i] = 1LL;
root_idx.insert(i);
}
}
ll root_find(ll x) {
if (parents[x] == x)
return x;
return parents[x] = root_find(parents[x]);
}
void unite(ll x, ll y) {
// priority for x is larger than that of y
x = root_find(x);
y = root_find(y);
if (x == y)
return;
parents[y] = x, set_size[x] += set_size[y];
root_idx.erase(y);
n_groups--;
}
// connected or not
bool is_same(ll x, ll y) { return root_find(x) == root_find(y); }
ll size(ll x) { return set_size[root_find(x)]; }
};
struct WeightedUnionFind {
vl parents, set_size, weights;
set<ll> root_idx;
ll n_groups;
WeightedUnionFind(ll n) {
parents = set_size = weights = vl(n);
n_groups = n;
rep(i, n) {
parents[i] = i;
set_size[i] = 1LL;
weights[i] = 0;
root_idx.insert(i);
}
}
ll root_find(ll x) {
if (parents[x] == x)
return x;
ll r = root_find(parents[x]);
weights[x] += weights[parents[x]];
return parents[x] = r;
}
ll weight(ll x) {
root_find(x);
return weights[x];
}
void unite(ll x, ll y, ll w) {
// priority for x is larger than that of y
w += weight(x) - weight(y);
x = root_find(x);
y = root_find(y);
if (x == y)
return;
parents[y] = x, set_size[x] += set_size[y];
root_idx.erase(y);
weights[y] = w;
n_groups--;
}
// connected or not
bool is_same(ll x, ll y) { return root_find(x) == root_find(y); }
ll size(ll x) { return set_size[root_find(x)]; }
ll difference(ll x, ll y) { return weight(y) - weight(x); }
};
struct Doubling { // ABC167D
ll n;
ll sz;
vl2 next;
/*
next[k + 1][i] := next[k][next[k][i]]
next[0][i] := edge[i]
e.g. a0, a1, ..., an-1 / 0 <= ai <= n - 1
a0 -> a[a0] -> a[a[a0]] -> ... -> a[a[...[a[0]]]] (m times)
Let the function repeatedly inputting a[i] m times be f[m](a[i])
- get(i, x) returns f[x](a[i])
- lower_bound(i, j) returns minimum x which satisfies f[x](a[i]) >= j.
if not possible returns n.
*/
// edge[i]: i -> edge[i] by one operation
Doubling(vl &edge) : n(edge.size()), sz(62) {
next.resize(sz, vl(n, -1));
rep(i, n) next[0][i] = edge[i];
rep(k, sz - 1) rep(i, n) next[k + 1][i] = next[k][next[k][i]];
}
// return the result obtained when starting from i and advancing x times
ll get(ll i, ll x) {
ll ret = i;
rep(bit, sz) {
if (!(x >> bit & 1))
continue;
ret = next[bit][ret];
}
return ret;
}
// return the iteration x where the value exceeds j for the first time.
// if it is not possible, then return n.
ll lower_bound(ll i, ll j) {
ll cur = i, acc = 0;
revrep(wid, sz) {
if (next[wid][cur] < j) {
acc += 1LL << wid;
cur = next[wid][cur];
}
}
return min(n, acc + 1);
}
};
template <class T> class LowestCommonAncestor {
public:
ll N, logN;
vl depth, len;
T tree;
vl2 parents;
LowestCommonAncestor(ll n, T &_tree) {
N = n;
logN = 0;
while (N > (1LL << logN))
logN++;
depth = len = vl(N);
parents = vl2(logN, vl(N));
tree = _tree;
_init(0, -1, 0, 0);
_build();
}
void _init(ll source, ll parent, ll d, ll l) {
depth[source] = d;
parents[0][source] = parent;
len[source] = l;
rep(i, tree[source].size()) {
ll target = tree[source][i].to;
ll cost = tree[source][i].cost;
if (target == parent)
continue;
_init(target, source, d + 1, cost + l);
}
}
void _build() {
rep(k, logN - 1) rep(n, N) {
// if there is no parent, -1.
// otherwise, the parent of the parent is the parent.
if (parents[k][n] < 0)
parents[k + 1][n] = -1;
else
parents[k + 1][n] = parents[k][parents[k][n]];
}
}
ll query(ll u, ll v) {
if (depth[u] > depth[v])
swap(u, v);
rep(k, logN) if ((depth[v] - depth[u]) >> k & 1) v = parents[k][v];
if (u == v)
return u;
revrep(k, logN) {
if (parents[k][u] != parents[k][v]) {
u = parents[k][u];
v = parents[k][v];
}
}
return parents[0][u];
}
ll distance(ll u, ll v) {
ll w = query(u, v);
return len[u] + len[v] - 2 * len[w];
}
};
struct BinaryIndexedTree {
ll n, ini, M;
vl dat;
BinaryIndexedTree(ll n, ll ini = 0) : dat(n + 1, ini), n(n), ini(ini) {
M = 1;
while (M <= n)
M <<= 1;
};
// x: 1001 1010 1100 1011 1101 1111
// x & - x: 0001 0010 0100 0001 0001 0001
// ->: 1010 1100 10000 1100 1100 10000
ll update_func(ll val, ll d) {
// if maximum -> max(val, dat)
// return max(val, d);
// if cumulative sum
return val + d;
}
ll query(ll i) {
/*
v[0] + v[1] + ... + v[i]
e.g.) i = 10101
itr1. 10101 -> 10100
itr2. 10100 -> 10000
itr3. 10000 -> 00000 (break)
*/
if (i < 0)
return ini;
ll ret = 0;
for (ll j = i; j >= 0; j = (j & (j + 1)) - 1) {
ret = update_func(ret, dat[j]);
}
return ret;
}
ll query(ll l, ll r) {
// a[l] + a[l + 1] + ... + a[r - 1] + a[r]
return query(r) - query(l - 1);
}
ll lower_bound(ll key) {
// v[0] + v[1] + ... + v[left - 1] < key <= v[0] + v[1] + ... + v[left]
if (key <= 0)
return 0;
ll left = 0, right = 1;
while (right <= n)
right <<= 2;
for (ll i = right; i > 0; i /= 2) {
if (left + i <= n && dat[left + i - 1] < key) {
key -= dat[left + i - 1];
left += i;
}
}
return left;
}
void update(ll i, ll val) {
/*
e.g.) i = 10101, n = 11111
itr1. i: 10101, i+1: 10110 -> 10111
itr2. i: 10111, i+1: 11000 -> 11111 (break)
*/
if (i < 0)
return;
for (ll j = i; j < n; j |= j + 1) {
dat[j] = update_func(val, dat[j]);
}
}
};
struct SegmentTree {
ll n, ini, minimize;
vl dat;
// when seeking minimum
// ini = INF
// when seeking maximum
// ini = -INF
SegmentTree(ll n_, bool minimize_ = true) {
n = 1;
minimize = minimize_;
if (minimize)
ini = INF;
else
ini = -INF;
while (n < n_)
n *= 2;
dat.resize(2 * n - 1);
rep(i, 2 * n - 1) dat[i] = ini;
};
void update(ll idx, ll val, bool force = false) {
idx += n - 1;
if (!force) {
if (minimize && dat[idx] <= val)
return;
if (!minimize && dat[idx] >= val)
return;
}
dat[idx] = val;
while (idx > 0) {
idx = (idx - 1) / 2;
// when seeking minimum
if (minimize)
dat[idx] = min(dat[idx * 2 + 1], dat[idx * 2 + 2]);
// when seeking maximum
else
dat[idx] = max(dat[idx * 2 + 1], dat[idx * 2 + 2]);
}
}
ll query(ll l, ll r) {
// ### NOTE ###
// the range is [l, r]
// l, l + 1, ..., r
r++; // to adjust to this method
return query_segment(l, r, 0, 0, n);
}
ll query_segment(ll a, ll b, ll idx, ll l, ll r) {
assert(a <= b);
if (r <= a || b <= l)
return ini;
if (a <= l && r <= b)
return dat[idx];
else {
ll seg1 = query_segment(a, b, idx * 2 + 1, l, (l + r) / 2);
ll seg2 = query_segment(a, b, idx * 2 + 2, (l + r) / 2, r);
// when seeking minimum
if (minimize)
return min(seg1, seg2);
// when seeking maximum
else
return max(seg1, seg2);
}
}
};
template <class Target> class RerootingTreeDP {
public:
using T = typename Target::type;
struct DP_edge {
ll to, rev; // rev is the index to trace the source node.
T value; // objective value
};
private:
ll n;
void dfs_fwd(ll source, ll parent) {
ll par_idx = -1;
vector<T> values;
rep(i, tree[source].size()) {
const DP_edge &e = tree[source][i];
if (e.to == parent) {
par_idx = i;
continue;
}
dfs_fwd(e.to, source);
values.pb(e.value);
}
// If the parent != -1, update the value on edge from parent to source
if (par_idx != -1) {
ll src_idx = tree[source][par_idx].rev;
// update values on the edge from parent to source
tree[parent][src_idx].value = Target::merge(values);
}
}
void dfs_bwd(ll source, ll parent) {
vector<T> values;
for (auto &&e : tree[source])
values.pb(e.value);
values = Target::evaluate(values);
rep(i, tree[source].size()) {
const DP_edge &e = tree[source][i];
if (e.to == parent)
continue;
// tree[e.to][e.rev]: e.to -> source
tree[e.to][e.rev].value = values[i];
dfs_bwd(e.to, source);
}
}
public:
UnionFind uf;
vector<vector<DP_edge>> tree;
RerootingTreeDP(ll n) : n(n), uf(n), tree(n) {}
void add_edge(ll u, ll v, T val) {
assert(!uf.is_same(u, v));
tree[u].pb({v, ll(tree[v].size()), val});
tree[v].pb({u, ll(tree[u].size()) - 1, val});
uf.unite(u, v);
}
void dp() {
vb visited(n, false);
rep(i, n) {
if (visited[uf.root_find(i)])
continue;
dfs_fwd(i, -1);
visited[uf.root_find(i)] = true;
}
visited.assign(n, false);
rep(i, n) {
if (visited[uf.root_find(i)])
continue;
dfs_bwd(i, -1);
visited[uf.root_find(i)] = true;
}
}
ll size() const { return tree.size(); }
};
// ABC160F is one example
// Modify the functions evaluate and merge based on given problems
struct Merger {
using type = ll;
// This is the exaple of the number of children
static type merge(const vector<type> &value) {
// merge the result below the source node
// each value is from each child node of the source node
// value[i] := f(child i)
// Here, we would like to obtain f(source) using f(child i) (i = 0, 1, ...,
// n_children)
ll ret = 1;
for (auto &&v : value)
ret += v;
return ret;
}
static vector<type> evaluate(const vector<type> &value) {
// value[i] := f(source -> child i)
// we would like to obtain f(child i -> source)
// child j (j != i) is the grandchildren of child i
// represent f(child i -> source) using f(source -> j) (j != i)
// L[i + 1] := the result using f(source -> k) (k = 0, 1, ..., i)
// R[i] := the result using f(source -> k) (k = i, i + 1, ..., n_children)
const ll n_children = value.size();
vl L(n_children + 1, 0), R(n_children + 1, 0);
rep(i, n_children) L[i + 1] = L[i] + value[i];
revrep(i, n_children) R[i] = R[i + 1] + value[i];
vl ret(n_children);
rep(i, n_children) ret[i] = L[i] + R[i + 1] + 1;
return ret;
}
};
struct StronglyConnectedComponents {
/*
dag: [cmp idx][# of connected cmp]
the index of connected cmp
cmp: [cmp idx][# of vertex included in a cmp]
the index of vertex
cmp_idx: [vertex idx]
the component which the vertex belongs to
Use graph_rev when you would like to know the vertex with zero indegree
*/
ll n, n_cmp;
vl2 graph, graph_rev, dag, cmp;
vl order, visited, cmp_idx;
StronglyConnectedComponents() {}
StronglyConnectedComponents(ll sz)
: n(sz), graph(sz), graph_rev(sz), visited(sz), cmp_idx(sz) {}
void add_edge(ll from, ll to) {
graph[from].pb(to);
graph_rev[to].pb(from);
}
void input(ll m, ll offset = -1) {
ll a, b;
rep(i, m) {
in2(a, b);
add_edge(a + offset, b + offset);
}
}
ll operator[](ll k) { return cmp_idx[k]; }
void dfs_fwd(ll source) {
visited[source] = 1;
rep(i, graph[source].size()) {
ll target = graph[source][i];
if (!visited[target])
dfs_fwd(target);
}
order.pb(source);
}
void dfs_bwd(ll source, ll num) {
visited[source] = 1, cmp_idx[source] = num;
cmp[num].pb(source);
rep(i, graph_rev[source].size()) {
ll target = graph_rev[source][i];
if (!visited[target])
dfs_bwd(target, num);
}
}
ll build() {
fill(all(visited), 0);
order.clear();
rep(i, n) if (!visited[i]) dfs_fwd(i);
fill(all(visited), 0);
ll num = 0;
revrep(i, order.size()) {
if (!visited[order[i]]) {
dag.pb(vl());
cmp.pb(vl());
dfs_bwd(order[i], num++);
}
}
rep(i, n) for (ll to : graph[i]) if (cmp_idx[i] != cmp_idx[to])
dag[cmp_idx[i]]
.pb(cmp_idx[to]);
rep(i, num) {
sort(all(dag[i]));
dag[i].erase(unique(all(dag[i])), dag[i].end());
}
return n_cmp = num;
}
// if the v-th vertex is in loop or not
bool in_loop(ll v) { return cmp[cmp_idx[v]].size() > 1; }
// if the dag has loops or not
bool has_loop() {
rep(i, cmp.size()) if (cmp[i].size() > 1) return true;
return false;
}
};
struct CombinationMemo {
ll sz, mod;
vl fact, fact_inv, minv;
CombinationMemo(ll sz, ll _mod) : sz(sz), mod(_mod) {
fact.resize(sz + 5);
fact_inv.resize(sz + 5);
minv.resize(sz + 5);
init();
}
void init() {
fact[0] = fact[1] = 1;
minv[1] = 1;
fact_inv[0] = fact_inv[1] = 1;
For(i, 2, sz + 3) {
fact[i] = (i * fact[i - 1]) % mod;
minv[i] = mod - minv[mod % i] * (mod / i) % mod;
fact_inv[i] = fact_inv[i - 1] * minv[i] % mod;
}
}
ll nCk(ll n, ll r) {
if (n == r && n == 0)
return 1;
else if (n <= 0 || r < 0 || r > n)
return 0;
ll val = (fact[n] * fact_inv[n - r]) % mod;
val *= fact_inv[r];
return val % mod;
}
ll nPk(ll n, ll r) {
if (n == r && n == 0)
return 1;
else if (n <= 0 || r < 0 || r > n)
return 0;
ll val = (fact[n] * fact_inv[n - r]) % mod;
return val % mod;
}
};
struct PowerMemo {
ll sz, mod, base;
vl powB;
PowerMemo(ll sz, ll base, ll _mod) : sz(sz), base(base), mod(_mod) {
powB.resize(sz + 5);
init();
}
void init() {
powB[0] = 1;
rep(i, sz + 3) powB[i + 1] = (powB[i] * base) % mod;
}
ll operator[](ll k) { return powB[k]; }
};
struct Grid2D {
Graph graph;
ll Width, Height;
Grid2D(ll w, ll h, vb2 &block) : Width(w), Height(h) {
graph.resize(w * h);
_build(block);
}
ll pos_to_idx(point p) { return p.y * Width + p.x; }
point idx_to_pos(ll idx) { return {idx % Width, idx / Width}; }
bool undefined_region(point p, vb2 &block) {
if (p.x < 0 || p.x > Width - 1)
return true;
if (p.y < 0 || p.y > Height - 1)
return true;
if (block[p.x][p.y])
return true;
return false;
}
void _build(vb2 &block, ll val = 1) {
rep(x, Width) rep(y, Height) {
point p = {x, y};
ll idx1 = pos_to_idx(p);
ll idx2;
if (block[x][y])
continue;
rep(i, 4) {
point nxt = p + dirs[i];
idx2 = pos_to_idx(nxt);
if (!undefined_region(nxt, block))
graph[idx1].pb(
{idx2, val}); // dist[idx1][idx2] = val; (warshall-floyd)
}
}
}
};
struct Cumulative2D {
vl2 cum;
ll w, h;
Cumulative2D(ll w, ll h) : w(w), h(h) { cum = vl2(w + 1, vl(h + 1, 0)); }
template <typename T> void build(vector<T> &vec) {
// never forget building
rep(x, w + 1) cum[x][0] = 0;
rep(y, h + 1) cum[0][y] = 0;
rep(y, h) rep(x, w) cum[x + 1][y + 1] = cum[x][y + 1] + vec[x][y];
rep(x, w + 1) rep(y, h) cum[x][y + 1] += cum[x][y];
}
ll func(ll x, ll y, ll dx, ll dy) {
// 1-indexed
// the rectangle of (x, y), (x + dx, y), (x, y + dy) and (x + dx, y + dy)
// think about the case of (1, 1, 1, 1).
if (x + dx > w || y + dy > h)
return -INF;
ll val = cum[x + dx][y + dy];
val += cum[x][y];
val -= cum[x][y + dy];
val -= cum[x + dx][y];
return val;
}
};
struct LinearSystemIncidence {
struct Edge {
ll idx, to;
bool fwd;
};
/*
Ax = c
A: A in R^(V * E) <- given
x: x in R^E <- estimate this vector
c: c in R^V <- given
*/
ll n_vertex, n_edge;
bool mod2;
vl x;
vb visited;
vector<vector<Edge>> graph;
LinearSystemIncidence(ll n, vpl &es, bool mod2 = false)
: n_vertex(n), n_edge(es.size()), mod2(mod2) {
graph.resize(n);
visited.resize(n);
rep(i, n_edge) {
auto &e = es[i];
graph[e.e1].pb({i, e.e2, true});
graph[e.e2].pb({i, e.e1, false});
}
}
ll dfs(vl &c, ll src) {
visited[src] = true;
ll ret = c[src];
for (Edge &e : graph[src]) {
if (visited[e.to])
continue;
ll tmp = dfs(c, e.to);
x[e.idx] = e.fwd ? tmp : -tmp;
ret += tmp;
if (mod2)
x[e.idx] = modf(x[e.idx], 2);
}
return mod2 ? ret % 2 : ret;
}
bool solve(vl &c) {
x.assign(n_edge, 0);
visited.assign(n_vertex, false);
rep(src, n_vertex) {
if (visited[src])
continue;
if (dfs(c, src))
return false;
}
return true;
}
};
struct BigInt10 {
string num;
map<ll, vl> mod;
BigInt10(string num = "0") : num(num) {}
size_t size() { return num.size(); }
void compute_mod(ll _mod) {
ll sz = num.size();
mod[_mod] = vl(sz + 1, 0);
ll tenth = 1;
rep(i, sz) {
ll top = num[sz - 1 - i] - '0';
mod[_mod][i + 1] = (mod[_mod][i] + top * tenth) % _mod;
(tenth *= 10) %= _mod;
}
}
ll operator[](ll k) { return num[k] - '0'; }
ll subseq_mod(ll l, ll r, ll m) {
// s1 s2 ... sl .... sr ... sn
// the modulo of 00 ... 0 sl ... sr 00 ... 0
assert(l <= r);
ll sz = num.size();
ll tot = mod[m][sz];
ll ls = modf(tot - mod[m][sz - l], m);
ll rs = mod[m][sz - r];
return (tot - ls - rs + 2 * m) % m;
}
bool operator<(BigInt10 &n2) const {
if (num.length() < n2.size())
return true;
else if (num.length() > n2.size())
return false;
rep(i, num.length()) if (ll(num[i] - '0') !=
n2[i]) return ll(num[i] - '0') < n2[i];
return false;
}
bool operator<=(BigInt10 &n2) const {
if (num.length() < n2.size())
return true;
else if (num.length() > n2.size())
return false;
rep(i, num.length()) if (ll(num[i] - '0') !=
n2[i]) return ll(num[i] - '0') < n2[i];
return true;
}
bool operator>(BigInt10 &n2) const {
if (num.length() > n2.size())
return true;
else if (num.length() < n2.size())
return false;
rep(i, num.length()) if (ll(num[i] - '0') !=
n2[i]) return ll(num[i] - '0') > n2[i];
return false;
}
bool operator>=(BigInt10 &n2) const {
if (num.length() > n2.size())
return true;
else if (num.length() < n2.size())
return false;
rep(i, num.length()) if (ll(num[i] - '0') !=
n2[i]) return ll(num[i] - '0') > n2[i];
return true;
}
};
istream &operator>>(istream &is, BigInt10 &a) { return is >> a.num; }
ostream &operator<<(ostream &os, BigInt10 &a) { return os << a.num; }
BigInt10 add(BigInt10 s1, BigInt10 s2) {
ll sz1 = s1.size(), sz2 = s2.size(), sz = max(sz1, sz2);
ll r = abs(sz2 - sz1);
string a(r, '0');
if (sz1 < sz2)
s1.num = a + s1.num;
else if (sz1 > sz2)
s2.num = a + s2.num;
bool inc = false;
rep(i, sz) {
ll nxt = s1[sz - 1 - i] + s2[sz - 1 - i] + inc;
if (nxt >= 10)
inc = true;
else
inc = false;
s1.num[sz - 1 - i] = to_string(nxt % 10)[0];
}
if (inc)
s1.num = "1" + s1.num;
return s1;
}
BigInt10 add(BigInt10 s, ll x) { return add(s, BigInt10(to_string(x))); }
BigInt10 subtract(BigInt10 s1, BigInt10 s2) {
ll sz1 = s1.size(), sz2 = s2.size(), sz = max(sz1, sz2);
assert(sz1 >= sz2);
ll r = abs(sz2 - sz1);
string a(r, '0');
if (sz1 > sz2)
s2.num = a + s2.num;
bool dec = false;
rep(i, sz) {
ll nxt = s1[sz - 1 - i] - s2[sz - 1 - i] - dec;
if (nxt < 0)
dec = true;
else
dec = false;
s1.num[sz - 1 - i] = to_string((nxt + 10) % 10)[0];
}
ll n0 = 0;
while (s1.num[n0] == '0')
n0++;
s1.num = substring(s1.num, n0, sz);
return s1;
}
BigInt10 subtract(BigInt10 s, ll x) {
return subtract(s, BigInt10(to_string(x)));
}
BigInt10 multiply(BigInt10 s, ll x) {
assert(x <= 10);
assert(x >= 0);
if (x == 0)
return BigInt10("0");
else if (x == 1)
return BigInt10(s.num);
if (x == 10)
return BigInt10(s.num + "0");
ll sz = s.size();
ll inc = 0;
rep(i, sz) {
ll nxt = s[sz - 1 - i] * x + inc;
inc = nxt / 10;
s.num[sz - 1 - i] = to_string(nxt % 10)[0];
}
if (inc)
s.num = to_string(inc) + s.num;
return s;
}
BigInt10 multiply(BigInt10 s1, BigInt10 s2) {
ll sz = s2.size();
BigInt10 ret;
rep(i, sz) {
ll x = s2[sz - 1 - i];
ret = add(ret, multiply(s1, x));
s1.num += "0";
}
return ret;
}
BigInt10 shift(BigInt10 s, ll k) {
if (k >= s.size())
return BigInt10("0");
s.num = substring(s.num, 0, s.size() - k - 1);
return s;
}
struct BigInt2 {
string num;
ll sz;
map<ll, vl> mod;
ll nz;
BigInt2(string num) : num(num), sz(num.size()) {
nz = 0;
rep(i, sz) if (num[i] == '1') nz++;
}
size_t size() { return num.size(); }
void compute_mod(ll _mod) {
mod[_mod] = vl(sz + 1, 0);
ll base = 1;
rep(i, sz) {
ll top = num[sz - 1 - i] - '0';
mod[_mod][i + 1] = (mod[_mod][i] + top * base) % _mod;
(base *= 2) %= _mod;
}
}
ll bit_count() { return nz; }
ll operator[](ll k) { return num[k] - '0'; }
ll subseq_mod(ll l, ll r, ll m) {
// s1 s2 ... sl .... sr ... sn
// the modulo of 00 ... 0 sl ... sr 00 ... 0
assert(l <= r);
ll tot = mod[m][sz];
ll ls = modf(tot - mod[m][sz - l], m);
ll rs = mod[m][sz - r];
return modf(tot - ls - rs, m);
}
bool operator<(BigInt10 &n2) const {
if (num.length() < n2.size())
return true;
else if (num.length() > n2.size())
return false;
rep(i, num.length()) if (ll(num[i] - '0') !=
n2[i]) return ll(num[i] - '0') < n2[i];
return false;
}
bool operator>(BigInt10 &n2) const {
if (num.length() > n2.size())
return true;
else if (num.length() < n2.size())
return false;
rep(i, num.length()) if (ll(num[i] - '0') !=
n2[i]) return ll(num[i] - '0') > n2[i];
return num > n2.num;
}
};
istream &operator>>(istream &is, BigInt2 &a) { return is >> a.num; }
ostream &operator<<(ostream &os, BigInt2 &a) { return os << a.num; }
struct MedianManager {
ll sz = 0, median = 0;
priority_queue<ll> lower;
priority_queue<ll, vl, greater<ll>> upper;
vl in, out;
ll ini;
MedianManager(ll _ini = -INF) {
ini = _ini;
in = out = vl(2, _ini);
}
void update(ll v) {
sz++;
if (sz == 1)
median = v, in[0] = in[1] = out[0] = out[1] = ini;
else if (sz % 2 == 0) {
if (v < median)
lower.push(v), upper.push(median), in[0] = v, in[1] = median,
out[0] = out[1] = ini;
else
lower.push(median), upper.push(v), in[0] = median, in[1] = v,
out[0] = out[1] = ini;
} else if (sz % 2) {
ll lower_top = lower.top(), upper_bottom = upper.top();
if (v < lower_top)
median = lower_top, lower.pop(), lower.push(v), in[0] = v,
out[0] = median, in[1] = out[1] = ini;
else if (v > upper_bottom)
median = upper_bottom, upper.pop(), upper.push(v), in[1] = v,
out[1] = median, in[0] = out[0] = ini;
else
median = v, in[0] = out[0] = in[1] = out[1] = ini;
}
}
ll size() { return sz; }
pl medians() {
return sz % 2 ? mp(median, median) : mp(lower.top(), upper.top());
}
};
struct RangeTypeQuery {
ll n, cur, Q;
vl types, most_right, ans;
vtp3 queries;
BinaryIndexedTree bit;
RangeTypeQuery(ll _n, ll _Q, BinaryIndexedTree _bit) : bit(_bit) {
n = _n, Q = _Q, cur = 0;
queries.resize(Q);
ans.resize(Q);
types.resize(n);
most_right = vl(n, -1);
}
void get_queries(ll offset = -1) {
rep(i, Q) {
ll l, r;
in2(l, r);
l += offset, r += offset;
queries[i] = {r, l, i};
}
sort(all(queries));
}
void get_sequence(ll offset = -1) {
rep(i, n) {
in1(types[i]);
types[i] += offset;
// type num must be less than n.
assert(types[i] <= n - 1);
}
}
void update(ll nxt) {
while (cur <= nxt) {
if (most_right[types[cur]] != -1)
bit.update(most_right[types[cur]], -1);
most_right[types[cur]] = cur;
bit.update(most_right[types[cur]], 1);
cur++;
}
}
void process_queries() {
rep(i, Q) {
ll l, r, v, idx;
tie(r, l, idx) = queries[i];
update(r);
v = bit.query(l, r);
ans[idx] = v;
}
}
};
ll gcd(ll m, ll n) {
ll a = max(m, n);
ll b = min(m, n);
while (b != 1 && b != 0) {
a %= b;
swap(a, b);
}
return b == 1 ? 1 : a;
}
ll lcm(ll m, ll n) { return m / gcd(m, n) * n; }
ll power_normal(ll a, ll power) {
ll value = 1;
while (power != 0) {
if (power & 1)
value = value * a;
a = a * a;
power = power >> 1;
}
return value;
}
ll power_mod(ll a, ll power, ll mod) {
__int128_t value = 1;
__int128_t b = a;
while (power != 0) {
if (power & 1)
value = (value * b) % mod;
b = (b * b) % mod;
power = power >> 1;
}
return value % mod;
}
ll modinv(ll a, ll mod) { return power_mod(a, mod - 2, mod); }
ll combination(ll n, ll r, ll mod) {
if (n == r && n == 0)
return 1;
else if (n <= 0 || r < 0 || r > n)
return 0;
ll numerator = 1;
ll denomenator = 1;
for (ll i = 0; i < r; i++) {
ll num = (n - i) % mod, den = (i + 1) % mod;
(numerator *= num) %= mod;
(denomenator *= modinv(den, mod)) %= mod;
}
return (numerator * denomenator) % mod;
}
vl2 pascal_triangle(ll n) {
/*
Complexity: O(n^2)
The upper bound of n is nearly 50.
Parameters
----------
n; the size of returned vector
Returns
-------
comb[i][j]: combination(i, j). 0 <= i <= n, 0 <= j <= i
*/
vl2 comb(n + 1, vl(n + 1));
comb[0][0] = 1;
For(i, 1, n + 1) rep(j, i + 1) {
comb[i][j] += comb[i - 1][j];
if (j > 0)
comb[i][j] += comb[i - 1][j - 1];
}
return comb;
}
ld log_combination(ll n, ll r) {
if (n == r && n == 0)
return 0;
else if (n <= 0 || r < 0 || r > n)
return -INF;
ld val = 0;
for (ll i = 0; i < r; i++) {
val += log(n - i);
val -= log(i + 1);
}
return val;
}
string bin_expression(ll n, ll dig) {
string s = "";
rep(i, dig) {
s += to_string(n % 2);
n /= 2;
}
reverse(all(s));
return s;
}
bool is_prime(ll n) {
if (n <= 1)
return false;
for (ll i = 2; i * i <= n; i++) {
if (n % i == 0)
return false;
}
return true;
}
vl eratosthenes(ll n, vl &div) {
// return the list of prime number up to n
div = vl(n + 1, 0);
vl ps;
rep(i, n + 1) div[i] = i;
For(i, 2, n + 1) {
if (div[i] == i) {
for (ll j = 2 * i; j <= n; j += i)
chmin(div[j], i);
ps.pb(i);
}
}
return ps;
}
map<ll, ll> quick_prime_factorization(vl &div, ll n) {
// ABC177E using the div from eratosthenes
map<ll, ll> table;
while (n != 1) {
table[div[n]]++;
n /= div[n];
}
return table;
}
map<ll, ll> prime_factorization(ll n) {
ll i = 2;
map<ll, ll> table;
while (i * i <= n) {
while (n % i == 0) {
table[i]++;
n /= i;
}
i++;
}
if (n > 1)
table[n] = 1;
return table;
}
vl divisor_table(ll n, bool asc = true) {
vl table;
ll i = 1;
while (i * i <= n) {
if (n % i == 0) {
table.pb(i);
if (i * i != n)
table.pb(n / i);
}
i++;
}
if (asc)
sort(all(table));
else
sort(rall(table));
return table;
}
ll euler_function(ll x) {
// the number of coprime numbers for x (including 1)
vl dt = divisor_table(x, false);
ll ret = x;
map<ll, ll> cnt;
for (ll d : dt) {
if (d == 1)
continue;
cnt[d] = x / d;
for (auto &c : cnt)
if (c.e1 != d && c.e1 % d == 0)
cnt[d] -= c.e2;
ret -= cnt[d];
}
return ret;
}
vl base_converter(ll num, ll base, ll sz) {
vl coefs(sz);
ll cur = 0;
while (num) {
ll val = num % base;
assert(cur < sz);
coefs[cur++] = val;
num -= val, num /= base;
}
while (cur < sz)
coefs[cur++] = 0;
return coefs;
}
string indexed_alphabet(ll leng, ll idx) {
// 0-indexed
// returns the string whose order is the-idx-th in the set of strings of the
// given length.
string ret = "";
if (idx >= power_normal(26, leng))
return ret;
vl cs = base_converter(idx, 26, leng);
reverse(all(cs));
rep(i, cs.size()) ret += char('a' + cs[i]);
return ret;
}
ll alphabetical_index(string s) {
// including the strings whose length is less than that of s.
// excluding the empty string.
ll leng = s.length();
ll ret = 0, p = 1;
rep(i, leng) {
ll b = s[leng - 1 - i] - 'a';
ret += p + p * b, p *= 26;
}
return ret;
}
// just change the input if you want to change the target.
// If you want to check the common sequences in two strings,
// combine them. e.g. ABC150F
template <typename T> vl z_algorithm(T &s, ll n) {
/*
Paramters
---------
T: the string or list of interest
n: the size of string or list
Returns
-------
res[i] is the maximum number of K which satisfies
s[:K] == s[i:i + K]
for each i = 0, 1, 2, ..., n - 1.
*/
vl res(n);
res[0] = n;
ll i1 = 1, i2 = 0;
while (i1 < n) {
/*
i1: the starting point
i2: the length of substring
*/
while (i1 + i2 < n && s[i2] == s[i1 + i2])
++i2;
res[i1] = i2;
if (i2 == 0) {
++i1;
continue;
}
ll i3 = 1;
// update the already seen points
while (i1 + i3 < n && i3 + res[i3] < i2) {
res[i1 + i3] = res[i3];
++i3;
}
// update up to i1 + i3 and the next possible minimum length is i2 - i3 (=
// res[i3])
i1 += i3, i2 -= i3;
}
return res;
}
ll string_to_ll(string s) {
ll l = s.length();
ll idx = 0;
ll val = 0;
ll tenth = 1;
while (idx < l) {
ll m = s[l - 1 - idx] - '0';
val += (m * tenth);
tenth *= 10;
idx++;
}
return val;
}
string reflected_string(string s) {
string t, u;
ll n = s.length();
t = s;
reverse(all(t));
u = substring(t, 0, n - 2) + s + substring(t, 1, n - 1);
return u;
}
ld distance_between_point_line(point l_begin, point l_end, point p) {
ll xl1 = l_begin.x, yl1 = l_begin.y;
ll xl2 = l_end.x, yl2 = l_end.y;
ll xp = p.x, yp = p.y;
ll a = yl2 - yl1;
ll b = -xl2 + xl1;
ll c = -a * xl2 - b * yl2;
return abs(ld(a * xp + b * yp + c)) / ld(sqrt(a * a + b * b));
}
bool is_cross(point l1_begin, point l1_end, point l2_begin, point l2_end) {
ll x1 = l1_begin.x, y1 = l1_begin.y;
ll x2 = l1_end.x, y2 = l1_end.y;
ll x3 = l2_begin.x, y3 = l2_begin.y;
ll x4 = l2_end.x, y4 = l2_end.y;
ll val1 = (x1 - x2) * (y3 - y1) + (y1 - y2) * (x1 - x3);
ll val2 = (x1 - x2) * (y4 - y1) + (y1 - y2) * (x1 - x4);
ll val3 = (x3 - x4) * (y1 - y3) + (y3 - y4) * (x3 - x1);
ll val4 = (x3 - x4) * (y2 - y3) + (y3 - y4) * (x3 - x2);
return val1 * val2 < 0 && val3 * val4 < 0;
}
template <typename T> bool isColinear(T p1, T p2, T p3) {
T v1 = p2 - p1, v2 = p3 - p1;
return v1.x * v2.y == v1.y * v2.x;
}
template <typename T> T PerpendicularBisector(T p1, T p2) {
T vec = p2 - p1;
assert(!vec.is_zero());
T ret = {vec.y, -vec.x};
return ret;
}
template <typename T> ld Distance2DPoints(T p1, T p2) {
T vec = (p1 - p2) * (p1 - p2);
return sqrt(vec.x + vec.y);
}
ll SquaredDistance2DPoints(point p1, point p2) {
point vec = (p1 - p2) * (p1 - p2);
return vec.x + vec.y;
}
ld space_of_triangle(point p1, point p2, point p3) {
ll x1 = p1.x, y1 = p1.y;
ll x2 = p2.x, y2 = p2.y;
ll x3 = p3.x, y3 = p3.y;
ll v1 = x2 - x1;
ll u1 = y2 - y1;
ll v2 = x3 - x1;
ll u2 = y3 - y1;
ld s = ld(v1 * u2 - u1 * v2) / ld(2);
return abs(s);
}
pair<point, ll> OuterCenter(point p1, point p2, point p3) {
// the center of circle on the given three points
// return the determinant value and the product of center points and 2 *
// determinant value
point ret;
if (isColinear(p1, p2, p3)) {
ll d1 = SquaredDistance2DPoints(p1, p2);
ll d2 = SquaredDistance2DPoints(p2, p3);
ll d3 = SquaredDistance2DPoints(p3, p1);
if (d1 >= d2 && d1 >= d3) {
ret = p1 + p2;
return mp(ret, 2);
} else if (d2 >= d1 && d2 >= d3) {
ret = p2 + p3;
return mp(ret, 2);
} else {
ret = p3 + p1;
return mp(ret, 2);
}
}
point pv1 = PerpendicularBisector(p1, p2);
point pv2 = PerpendicularBisector(p1, p3);
point cv1_2x = p1 + p2, cv2_2x = p1 + p3;
// cv1 + k pv1 == cv2 + m pv2
// (pv1x -pv2x) (k) = (cv2x - cv1x)
// (pv1y -pv2y) (m) = (cv2y - cv1y)
ll det_inv = -pv1.x * pv2.y + pv1.y * pv2.x;
ll x1_2x = cv2_2x.x - cv1_2x.x, x2_2x = cv2_2x.y - cv1_2x.y;
pl c_2x_det = {-pv2.y * x1_2x + pv2.x * x2_2x,
-pv1.y * x1_2x + pv1.x * x2_2x};
// ret.x = ld(cv1_2x.x * det_inv + pv1.x * c_2x_det.e1) / ld(2 * det_inv);
// ret.y = ld(cv1_2x.y * det_inv + pv1.y * c_2x_det.e1) / ld(2 * det_inv);
ret.x = cv1_2x.x * det_inv + pv1.x * c_2x_det.e1;
ret.y = cv1_2x.y * det_inv + pv1.y * c_2x_det.e1;
ll jacobian = 2 * det_inv;
return mp(ret, jacobian);
}
ll inversion_number(vl a, ll a_max) {
/*
Paramters
---------
a: vector<ll>
All the elements must be non-negative.
Prefably the elements are compressed to reduce the computational cost.
a_max: ll
The maximum value of the vector a or the value bigger than the value
stated previously.
*/
BinaryIndexedTree bit(a_max + 1);
ll val = 0;
rep(i, a.size()) {
// i is the number of elements that have lower index than a[i].
// call the number of elements that have lower value than a[i]
// by subtracting these two, the residual number is the number of elements
// that have larger value.
val += i - bit.query(a[i] - 1); // cumulative sum from 0 to a[i] - 1
bit.update(a[i], 1);
}
return val;
}
ld bin_search(ld left, ld right, bool lb, function<bool(ld)> judge) {
ld mid;
while (right - left > EPS * 5) {
mid = (right + left) / 2;
if (lb) {
if (judge(mid))
right = mid;
else
left = mid + EPS;
} else {
if (judge(mid))
left = mid;
else
right = mid - EPS;
}
}
return right;
}
ll bin_search(ll left, ll right, bool lb, function<bool(ll)> judge) {
ll mid;
while (right > left) {
if (lb) {
// if true (satisfies the condition), range shifts smaller direction
mid = (right + left) / 2;
if (judge(mid))
right = mid;
else
left = mid + 1;
} else {
// if true (satisfies the condition), range shitfs larger direction
mid = (right + left + 1) / 2;
if (judge(mid))
left = mid;
else
right = mid - 1;
}
}
return right;
}
ld trinary_search(ld left, ld right, function<ld(ld)> func) {
// Care the value EPS!!! Compare to the condition
while (abs(right - left) > EPS) {
ld left2 = (2.0 * left + right) / 3.0;
ld right2 = (left + 2.0 * right) / 3.0;
ld f1 = func(left2);
ld f2 = func(right2);
if (f1 <= f2)
right = right2;
else if (f2 <= f1)
left = left2;
}
return right;
}
template <typename T> vector<T> compress(vector<T> v) {
// sort and remove all the duplicated values
sort(all(v));
v.erase(unique(all(v)), v.end());
return v;
}
template <typename T> map<T, ll> dict(const vector<T> &v) {
map<T, ll> d;
rep(i, v.size()) d[v[i]] = i;
return d;
}
points compress2D(vl xs, vl ys) {
/*
NOTE
----
Add the corner points if required
*/
ll n = xs.size();
vl xcs = compress(xs), ycs = compress(ys);
map<ll, ll> xd = dict(xcs), yd = dict(ycs);
points ps(n);
rep(i, n) xs[i] = xd[xs[i]], ys[i] = yd[ys[i]];
rep(i, n) ps[i] = {xs[i], ys[i]};
sort(all(ps));
return ps;
}
ll kruskal(vector<undirected_edge> &es, ll n_vertex) {
// O(ElogE)
sort(all(es));
UnionFind uf(n_vertex);
ll min_cost = 0;
rep(i, es.size()) {
undirected_edge &e = es[i];
if (!uf.is_same(e.from, e.to)) {
min_cost += e.cost;
uf.unite(e.from, e.to);
}
}
return min_cost;
}
ll LongestIncreasedSequence(vl &v) {
ll n = v.size();
vl dp(n, INF);
rep(i, n) * lower_bound(all(dp), v[i]) = v[i];
return lower_bound(all(dp), INF) - dp.begin();
}
void dijkstra(ll start, Graph &graph, vl &dist, vl &vertex_pre,
bool trace = false) {
priority_queue<pl, vpl, greater<pl>> q;
ll n = graph.size();
dist = vl(n, INF);
dist[start] = 0;
if (trace)
vertex_pre = vl(n, -1);
q.push(pl(0, start));
while (!q.empty()) {
ll idx, cost;
tie(cost, idx) = q.top();
q.pop();
if (dist[idx] < cost)
continue;
for (auto &e : graph[idx])
if (chmin(dist[e.to], dist[idx] + e.cost)) {
if (trace)
vertex_pre[e.to] = idx;
q.push(pl(dist[e.to], e.to));
}
}
}
vl get_predecessor(ll g, vl &vertex_pre) {
vl path;
for (; g != -1; g = vertex_pre[g])
path.pb(g);
reverse(all(path));
return path;
}
void warshall_floyd(vl2 &dist) {
ll n = dist.size();
// Dont forget the initialization
// rep(i, n) rep(j, n) dist[i][j] = INF * (i != j);
rep(k, n) rep(i, n) rep(j, n) dist[i][j] =
min(dist[i][j], dist[i][k] + dist[k][j]);
}
void update_warshall_floyd(vl2 &dist, ll v1, ll v2, ll cost) {
ll n = dist.size();
if (!chmin(dist[v1][v2], cost))
return;
dist[v2][v1] = dist[v1][v2];
rep(i, n) rep(j, n) dist[i][j] = min(dist[i][j], dist[i][v1] + dist[v1][j]);
rep(i, n) rep(j, n) dist[i][j] = min(dist[i][j], dist[i][v2] + dist[v2][j]);
}
// ABC061D, 137E
bool find_negative_cycle(ll n, ll goal, Graph &graph, vl &dist) {
rep(i, n) rep(v, n) rep(k, graph[v].size()) {
edge e = graph[v][k];
if (dist[e.to] != INF && dist[e.to] > dist[v] + e.cost) {
dist[e.to] = -INF;
if (goal == -1)
return true;
else if (goal == e.to)
return true;
}
}
return false;
}
bool bellman_ford(ll start, ll goal, Graph &graph, vl &dist) {
// if there is a closed circuit, it returns false. (when goal == -1)
// if the distance to goal cannot be obtained, it returns false (when goal !=
// -1)
ll n = graph.size();
dist = vl(n, INF);
dist[start] = 0;
rep(i, n) rep(v, n) rep(k, graph[v].size()) {
edge e = graph[v][k];
if (dist[v] != INF && dist[e.to] > dist[v] + e.cost)
dist[e.to] = dist[v] + e.cost;
}
if (find_negative_cycle(n, goal, graph, dist))
return false;
return true;
}
void Euler_Tour(Graph &tree, vl &euler_tour, vl &in, vl &out, ll anc = 0) {
// record only when we first reach a node and leave the node.
ll n = tree.size();
vb visited(n, false);
in = out = vl(n);
auto dfs = [&](auto dfs, ll source) -> void {
visited[source] = true;
in[source] = euler_tour.size();
euler_tour.pb(source);
bool is_leaf = true;
for (auto &e : tree[source]) {
ll target = e.to;
if (visited[target])
continue;
else
is_leaf = false;
dfs(dfs, target);
}
euler_tour.pb(-source);
out[source] = euler_tour.size() - 1;
};
dfs(dfs, anc);
}
void Euler_Tour2(Graph &tree, vl &euler_tour, vl &in, vl &out, ll anc = 0) {
// record everytime we reach a node
ll n = tree.size();
vb visited(n, false);
in = out = vl(n);
auto dfs = [&](auto dfs, ll source) -> void {
visited[source] = true;
in[source] = euler_tour.size();
euler_tour.pb(source);
bool is_leaf = true;
for (auto &e : tree[source]) {
ll target = e.to;
if (visited[target])
continue;
else
is_leaf = false;
dfs(dfs, target);
euler_tour.pb(source);
}
out[source] = euler_tour.size() - 1;
};
dfs(dfs, anc);
}
std::mt19937 create_rand_engine() {
std::random_device rnd;
std::vector<std::uint_least32_t> v(10);
std::generate(v.begin(), v.end(), std::ref(rnd));
std::seed_seq seed(v.begin(), v.end());
return std::mt19937(seed);
}
vl generate_unique_array(const size_t sz, ll vm, ll vM) {
const size_t range = static_cast<size_t>(vM - vm + 1);
const size_t num = static_cast<size_t>(sz * 1.2);
assert(vm <= vM);
assert(sz <= range);
vl ret;
auto engine = create_rand_engine();
std::uniform_int_distribution<ll> distribution(vm, vM);
while (ret.size() < sz) {
while (ret.size() < num)
ret.pb(distribution(engine));
sort(all(ret));
auto unique_end = unique(all(ret));
if (sz < distance(ret.begin(), unique_end))
unique_end = next(ret.begin(), sz);
ret.erase(unique_end, ret.end());
}
return ret;
}
vl generate_array(const size_t sz, ll vm, ll vM) {
const size_t range = static_cast<size_t>(vM - vm + 1);
assert(vm <= vM);
vl ret;
auto engine = create_rand_engine();
std::uniform_int_distribution<ll> distribution(vm, vM);
while (ret.size() < sz)
ret.pb(distribution(engine));
return ret;
}
template <typename T> void read_vector(ll n, vector<T> &v, ll offset = 0) {
v.resize(n);
rep(i, n) {
in1(v[i]);
if (offset)
v[i] += offset;
}
}
template <typename T>
void read_vector(ll n, vector<T> &v1, vector<T> &v2, ll offset1 = 0,
ll offset2 = 0) {
v1.resize(n);
v2.resize(n);
rep(i, n) {
in2(v1[i], v2[i]);
if (offset1)
v1[i] += offset1;
if (offset2)
v2[i] += offset2;
}
}
void read_points(ll n, points &ps, ll offset = 0) {
ps.resize(n);
rep(i, n) {
ll x, y;
in2(x, y);
ps[i] = {x, y};
ps[i] += offset;
}
}
void read_2DMap(ll w, ll h, vb2 &block, char b) {
block = vb2(w, vb(h, false));
string s;
rep(y, h) {
in1(s);
rep(x, w) block[x][y] = (s[x] == b);
}
}
ll diameter_of_tree(Graph &tree) {
ll dM = 0, vM = 0, v1, v2;
auto dfs = [&](auto dfs, ll src, ll par, ll d) -> void {
if (chmax(dM, d))
vM = src;
for (auto &e : tree[src]) {
if (e.to == par)
continue;
dfs(dfs, e.to, src, d + 1);
}
};
dfs(dfs, 0, -1, 0);
v1 = vM;
dfs(dfs, vM, -1, 0);
v2 = vM;
return dM;
}
void trit_search(ll n, function<void(ll, ll)> func) {
rep(bit, 1LL << n) {
ll sub = bit;
do {
func(bit, sub);
sub = (sub - 1) & bit;
} while (sub != bit);
}
}
ll convert_string_to_int(string s, ll n_below_decimal) {
// return double(s) * coef
ll ret = 0, comma = s.length(), n10 = 1,
coef = power_normal(10, n_below_decimal);
rep(i, s.length()) if (s[i] == '.') comma = i;
revrep(i, comma) {
ll num = s[i] - '0';
ret += n10 * num;
n10 *= 10;
}
ret *= coef;
n10 = coef / 10;
For(i, comma + 1, s.length()) {
ll num = s[i] - '0';
ret += n10 * num;
n10 /= 10;
}
return ret;
}
void iter_combination(ll n, ll k, function<void(ll)> func) {
/*
sub & -sub: the binary which shares the last digit whose value is 1 in sub
sub + x : carry up the last digit
~y : the binary whose digits are 1 if y's digit is 0.
(sub & ~y) / x: reduce the same number of 0s after first 1 in x from (sub &
~y).
*/
auto next_combination = [&](ll sub) -> ll {
ll x = sub & -sub, y = sub + x;
if (x != 0)
return (((sub & ~y) / x) >> 1) | y;
else
return INF;
};
ll M = 1LL << n;
for (ll bit = (1LL << k) - 1; bit < M; bit = next_combination(bit))
func(bit);
}
ll count_in_sorted_seq(vl &as, ll val) {
ll lb = lower_bound(all(as), val) - as.begin();
ll ub = upper_bound(all(as), val) - as.begin();
return ub - lb;
}
bool win_first_player(vl &grundy_nums) {
ll x = 0;
for (ll &gn : grundy_nums)
x ^= gn;
return x != 0;
}
ll create1001001(ll num, ll m, ll num_of_1, ll nb = 31) {
// e.g. 1001001001 -> num = 3
// e.g. 111111 -> num = 1 (REPUNIT)
// Calculate the modulo m of 100..100...100..1 (the length of each 00... is
// num - 1. The # of 1 is 2^i.) Then calculate the modulo m of
// 100...100...100...1 (The # of 1 is num_of_1 using the memo.)
vl memo(nb, 1);
ll v = 0, tot = 1, coef = power_mod(10, num, m);
rep(j, nb) {
ll c10 = power_mod(coef, 1LL << j, m);
memo[j + 1] = ((memo[j] * c10) % m + memo[j]) % m;
if (num_of_1 >> j & 1) {
(v += (memo[j] * tot) % m) %= m;
(tot *= power_mod(coef, 1LL << j, m)) %= m;
}
}
return v;
}
ll GaussJordanBitVector(vl &bs) {
ll n = bs.size();
ll rank = 0;
ll j = 0;
revrep(i, N_DIGITS) {
for (j = rank; j < n; j++)
if (bs[j] & (1LL << i))
break;
if (j == n)
continue;
if (j > rank)
bs[rank] ^= bs[j];
for (j = 0; j < n; j++)
if (j != rank)
bs[j] = min(bs[j], bs[j] ^ bs[rank]);
rank++;
}
return rank;
}
ll GaussJordan(vl2 &A, ll mod, bool is_extended = false, bool det = false) {
/*
Ax = b
Parameters
----------
A: m x n matrix
The matrix of interest
is_extended: bool
if A includes the term of b (e.g. when solving linear equation), true
otherwise false.
Property: The product of diagonal elements of upper triangle matrix is equal
to the determinant of this matrix.
*/
ll rank = 0, m = A.size(), n = A[0].size();
rep(r, m) rep(c, n) A[r][c] = modf(A[r][c], mod);
ll pivot, inv, ret = 1;
vl tmp;
if (det)
tmp = vl(n);
rep(c, n) {
if (is_extended && c == n - 1)
break;
pivot = -1;
For(r, rank, m) if (A[r][c] != 0) {
pivot = r;
break;
}
if (pivot == -1) {
if (det)
return 0;
continue;
}
swap(A[pivot], A[rank]);
ret = modf(ret * A[rank][c], mod), inv = modinv(A[rank][c], mod);
vl &ax = det ? tmp : A[rank];
rep(c2, n) ax[c2] = A[rank][c2] * inv % mod;
rep(r, m) if (r != rank && A[r][c]) {
ll base = A[r][c];
rep(c2, n) A[r][c2] = modf(A[r][c2] - ax[c2] * base, mod);
}
++rank;
}
return det ? ret : rank;
}
ll linear_equation(vl2 A, vl b, vl &res) {
ll m = A.size(), n = A[0].size();
vl2 M(m, vl(n + 1));
rep(r, m) {
rep(c, n) M[r][c] = A[r][c];
M[r][n] = b[r];
}
ll rank = GaussJordan(M, true);
For(r, rank, m) if (M[r][n]) return -1;
res.assign(n, 0);
rep(i, rank) res[i] = M[i][n];
return rank;
}
ll determinant(vl2 &A, ll mod) { return GaussJordan(A, mod, false, true); };
/*
#5. shakutori method (syakutori, two pointers technique)
// 1. strech right side while the condition is met.
// 2. renew the answer
// 3. increments left side
// 4. Back to 1. (l <= r must be satisfied all the time.)
ll l = 0, r = 0;
while (l < n){
if (l == r) r++;
while(r < n && cond) r++;
l++;
}
prl(answer);
#11. bfs ABC146D, ABC007C
1. first create a graph.
2. start searching from a node.
3. do some processes and push nodes connected with a given target node in
BFS.
4. repeat a series of procedure until queue is empty.
ll n; in1(n);
queue<tp3> q; vb visited(n, false);
auto bfs = [&](ll src, ll par){
visited[src] = true;
for (auto& e: graph[src]){
if (e.to != par && !visited[e.to]){
q.push(mt(e.to, src, ...));
}
}
};
q.push(mt(0, -1, 0));
while(!q.empty()){
ll src, par, ...; tie(src, par, ...) = q.front(); q.pop();
bfs(src, par, ...);
}
Grundy number (ARC038C)
void grundy(ll x, vl& gn){ // the example from the ari book
// the player can take a[0], a[1], ..., a[k - 1] coins from 1 mountain
set<ll> s;
rep(i, k) if (a[i] <= x) s.insert(gn[x - a[i]])
while (s.count(gn[x])) gn[x]++;
}
*/
/*
x: 1001 1010 1100 1011 1101 1111
x & ~ x: 0001 0010 0100 0001 0001 0001
sum: 1010 1100 10000 1100 1100 10000
####### Attention #######
S | (1 << i) -> S union {i}
S & ~(1 << i) -> S - {i}
# inclusion-exclusion principle
|U[i = 1 to n] Ai| = sum[i = 1 to n] |Ai| - sum[i < j]|Ai ^ Aj| + ... + (-1)^(n
- 1) |^[i = 1 to n]Ai|
*/
const ll MAX_N = 200005;
const size_t MAX_BIT = 160 * 160 + 10;
typedef bitset<MAX_BIT> bts;
typedef vector<bts> vbt;
typedef vector<vbt> vbt2;
typedef vector<vbt2> vbt3;
const bool multiple_queries = false;
void solve() {
/*
*** 注意 ***
・マイナスの整数の除算が0
(マイナスのときはCeil関数になる)になって，マイナスの判定ができていない．
・MODの逆元を取るときは素数か否かに注意．
・Queue, stack, deque等で必ず`empty`なら飛ばすようにする．
・set,
multisetで`RE`を起こすときは初期段階で解法に影響が出ないようなダミーをsetに入れておくとエラーを回避できる．
・掛け算のOverflow注意．(x * y > 10^18 -> x > 10^18 / y)
のような形で判定するとよい． ・総和を取る公式 (1+2+...+n = n * (n + 1) /
2)の計算時等で最終的には10^18に収まる場合は`/2`の順序を早める．
・Bit演算をするときに`a ^ b !=
c`のような式は代入演算子になったりするので注意． (ABC150F) ・aborted (core
dumped) のエラーが出ているときは変数の二重宣言やベクトルの区間外参照を確認．
・`tuple`のコンパイルエラーは`make_tuple(a, b, c, ...)`で回避．
・グラフの最短経路と木の最短経路は同じDFSでも更新方法に注意. (ABC148E)
・Running
Errorの１つとして，関数の返り値のタイプが定義されているのに何も返していないことが考えられる．
・Running
Errorとしてベクトルサイズが0であるにもかかわらずsortをしている場合がある．
・境界条件は必ず試す．
・Overflow不等式: (前提条件：a, b, c > 0)
1. a * b <= c -> a <= c / b
2. a * b < c -> a <= c / b && (c % b || a != c / b)
3. c <= a * b -> (c + b - 1) / b <= a
4. c < a * b -> (c + b - 1) / b <= a && (c % b || a != c / b)
*/
// generate_array(size, min, max);
ll n;
in1(n);
vl as;
read_vector(n, as);
multiset<ll> ms;
ms.insert(MOD);
ms.insert(-1);
ms.insert(as[0]);
For(i, 1, n) {
auto it = lower_bound(all(ms), as[i]);
--it;
if (it != ms.begin())
ms.erase(it);
ms.insert(as[i]);
}
prl(ms.size() - 2);
// ### DEBUG PART ###
auto naive_solver = [&]() {};
#ifdef _LOCAL
naive_solver();
#endif
}
void test(ll num = 0, bool verbose = false) {
rep(i, max(1LL, num)) {
ll t = clock();
if (verbose)
prl4("\n#####", i + 1, "#####", "\n## Answer ##");
solve();
if (verbose) {
prl("");
prl_time(t);
}
}
}
int main(void) {
ios::sync_with_stdio(false);
cin.tie(nullptr);
#ifdef _LOCAL
test(6, true);
#else
ll t = 0;
if (multiple_queries)
in1(t);
test(t, false);
#endif
return 0;
}
| #include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef long double ld;
const ll MOD = 1000000007;
// const ll MOD = 998244353;
const ll INF = MOD * MOD;
const long double EPS = 1e-12;
struct mint {
ll x;
mint(ll x = 0) : x((x % MOD + MOD) % MOD) {}
mint operator-() const { return mint(-x); }
mint &operator+=(const mint a) {
if ((x += a.x) >= MOD)
x -= MOD;
return *this;
}
mint &operator-=(const mint a) {
if ((x += MOD - a.x) >= MOD)
x -= MOD;
return *this;
}
mint &operator*=(const mint a) {
(x *= a.x) %= MOD;
return *this;
}
mint operator+(const mint a) const { return mint(*this) += a; }
mint operator-(const mint a) const { return mint(*this) -= a; }
mint operator*(const mint a) const { return mint(*this) *= a; }
mint pow(ll t) const {
if (!t)
return 1;
mint a = pow(t >> 1);
a *= a;
if (t & 1)
a *= *this;
return a;
}
// for prime mod
mint inv() const { return pow(MOD - 2); }
mint &operator/=(const mint a) { return *this *= a.inv(); }
mint operator/(const mint a) const { return mint(*this) /= a; }
};
istream &operator>>(istream &is, const mint &a) { return is >> a.x; }
ostream &operator<<(ostream &os, const mint &a) { return os << a.x; }
struct edge {
ll to, cost;
tuple<ll, ll> get_value() { return make_tuple(to, cost); }
};
struct fpoint {
ld x = 0;
ld y = 0;
bool operator<(const fpoint &p) const {
if (x == p.x)
return y < p.y;
return x < p.x;
}
bool operator==(const fpoint &p) const {
if (p.x - EPS < x && x < p.x + EPS && p.y - EPS < y && y < p.y + EPS)
return true;
return false;
}
bool operator!=(const fpoint &p) const {
if (p.x - EPS > x || x > p.x + EPS || p.y - EPS > y || y > p.y + EPS)
return true;
return false;
}
fpoint &operator+=(const ld a) {
x += a, y += a;
return *this;
}
fpoint &operator-=(const ld a) {
x -= a, y -= a;
return *this;
}
fpoint &operator*=(const ld a) {
x *= a, y *= a;
return *this;
}
fpoint &operator/=(const ld a) {
x /= a, y /= a;
return *this;
}
fpoint &operator+=(const fpoint p) {
x += p.x, y += p.y;
return *this;
}
fpoint &operator-=(const fpoint p) {
x -= p.x, y -= p.y;
return *this;
}
fpoint &operator*=(const fpoint p) {
x *= p.x, y *= p.y;
return *this;
}
fpoint &operator/=(const fpoint p) {
x /= p.x, y /= p.y;
return *this;
}
fpoint operator+(const fpoint p) const { return fpoint(*this) += p; }
fpoint operator-(const fpoint p) const { return fpoint(*this) -= p; }
fpoint operator*(const fpoint p) const { return fpoint(*this) *= p; }
fpoint operator/(const fpoint p) const { return fpoint(*this) /= p; }
fpoint operator+(const ld a) const { return fpoint(*this) += a; }
fpoint operator-(const ld a) const { return fpoint(*this) -= a; }
fpoint operator*(const ld a) const { return fpoint(*this) *= a; }
fpoint operator/(const ld a) const { return fpoint(*this) /= a; }
ld dot(const fpoint &p) const { return x * p.x + y * p.y; }
ll cross(const fpoint &p) const { return x * p.y - y * p.x; }
ld squared_norm() const { return x * x + y * y; }
ld norm() const { return sqrt(x * x + y * y); }
tuple<ld, ld> get_value() { return make_tuple(x, y); }
ll which_quadrant() const {
if (abs(x) < EPS && abs(y) < EPS)
return 0;
if (y > 0)
return x > 0 ? 1 : 2;
return x < 0 ? 3 : 4;
}
bool is_zero() {
fpoint z = {0, 0};
return z == *this;
}
};
struct point {
ll x = 0;
ll y = 0;
bool operator<(const point &p) const {
if (x == p.x)
return y < p.y;
return x < p.x;
}
bool operator==(const point &p) const {
if (x == p.x && y == p.y)
return true;
return false;
}
bool operator!=(const point &p) const {
if (x != p.x || y != p.y)
return true;
return false;
}
point &operator+=(const ll a) {
x += a, y += a;
return *this;
}
point &operator-=(const ll a) {
x -= a, y -= a;
return *this;
}
point &operator*=(const ll a) {
x *= a, y *= a;
return *this;
}
point &operator+=(const point p) {
x += p.x, y += p.y;
return *this;
}
point &operator-=(const point p) {
x -= p.x, y -= p.y;
return *this;
}
point &operator*=(const point p) {
x *= p.x, y *= p.y;
return *this;
}
void operator++(int) { x++, y++; }
void operator++() { x++, y++; }
void operator--(int) { x--, y--; }
void operator--() { x--, y--; }
point operator+(const point p) const { return point(*this) += p; }
point operator-(const point p) const { return point(*this) -= p; }
point operator*(const point p) const { return point(*this) *= p; }
point operator+(const ll a) const { return point(*this) += a; }
point operator-(const ll a) const { return point(*this) -= a; }
point operator*(const ll a) const { return point(*this) *= a; }
ll dot(const point &p) const { return x * p.x + y * p.y; }
ll cross(const point &p) const { return x * p.y - y * p.x; }
ll squared_norm() const { return x * x + y * y; }
tuple<ll, ll> get_value() { return make_tuple(x, y); }
ll which_quadrant() const {
if (x == 0 && y == 0)
return 0;
if (x >= 0 && y >= 0)
return 1;
else if (x <= 0 && y >= 0)
return 2;
else if (x <= 0 && y <= 0)
return 3;
else
return 4;
}
bool is_zero() {
point z = {0, 0};
return z == *this;
}
fpoint to_fpoint() {
fpoint ret = {ld(x), ld(y)};
return ret;
}
};
// angle_comparator
struct {
template <typename T> bool operator()(const T p1, const T p2) const {
ll q1 = p1.which_quadrant();
ll q2 = p2.which_quadrant();
if (q1 != q2)
return q1 < q2;
// judge for parallel lines
// if p1 cross p2 > 0 -> sin arg(p1 -> o -> p2) > 0
return p1.cross(p2) > 0;
}
} angle_comparator;
struct undirected_edge {
ll from;
ll to;
ll cost;
bool operator<(const undirected_edge &ue) const { return cost < ue.cost; }
tuple<ll, ll, ll> get_value() { return make_tuple(from, to, cost); }
};
struct event {
ll loc, val, sgn;
bool operator<(const event &e) const {
if (loc == e.loc)
return sgn == 1;
return loc < e.loc;
}
bool operator>(const event &e) const {
if (loc == e.loc)
return sgn == -1;
return loc > e.loc;
}
tuple<ll, ll, ll> get_value() { return make_tuple(loc, val, sgn); }
};
typedef std::pair<ll, ll> pl;
typedef std::tuple<ll, ll, ll> tp3;
typedef std::tuple<ll, ll, ll, ll> tp4;
typedef std::vector<ll> vl;
typedef std::vector<vl> vl2;
typedef std::vector<vl2> vl3;
typedef std::vector<vl3> vl4;
typedef std::vector<mint> vmi;
typedef std::vector<vmi> vmi2;
typedef std::vector<vmi2> vmi3;
typedef std::vector<vmi3> vmi4;
typedef std::vector<bool> vb;
typedef std::vector<vb> vb2;
typedef std::vector<vb2> vb3;
typedef std::vector<vb3> vb4;
typedef std::vector<pl> vpl;
typedef std::vector<tp3> vtp3;
typedef std::vector<tp4> vtp4;
typedef std::vector<point> points;
typedef std::vector<fpoint> fpoints;
// priority queue. Taking from the higher value. Don't forget calling !q.empty()
typedef std::priority_queue<ll> pq;
// priority queue. Taking from the lower value
typedef std::priority_queue<ll, vl, greater<ll>> pql;
typedef std::vector<vector<edge>> Graph;
const ll N_DIGITS = 60;
const long double PI = 3.14159265358979323846;
const points dirs = {{-1, 0}, {1, 0}, {0, 1}, {0, -1}, // four directions
{1, 1}, {-1, 1}, {-1, -1}, {1, -1}, // diagonal
{0, 0}}; // self
template <typename A, typename B> string to_string(pair<A, B> p);
template <typename A, typename B, typename C>
string to_string(tuple<A, B, C> p);
template <typename A, typename B, typename C, typename D>
string to_string(tuple<A, B, C, D> p);
string to_string(const string &s) { return '"' + s + '"'; }
string to_string(char c) { return string(1, c); }
string to_string(const char *s) { return to_string((string)s); }
string to_string(bool b) { return (b ? "true" : "false"); }
string to_string(mint a) { return to_string(a.x); }
string to_string(point p) {
return "{" + to_string(p.x) + ", " + to_string(p.y) + "}";
}
string to_string(fpoint p) {
return "{" + to_string(p.x) + ", " + to_string(p.y) + "}";
}
string to_string(edge e) {
return "{" + to_string(e.to) + ", " + to_string(e.cost) + "}";
}
template <typename A, typename B> string to_string(pair<A, B> p) {
return "(" + to_string(p.first) + ", " + to_string(p.second) + ")";
}
template <typename A, typename B, typename C>
string to_string(tuple<A, B, C> p) {
return "(" + to_string(get<0>(p)) + ", " + to_string(get<1>(p)) + ", " +
to_string(get<2>(p)) + ")";
}
template <typename A, typename B, typename C, typename D>
string to_string(tuple<A, B, C, D> p) {
return "(" + to_string(get<0>(p)) + ", " + to_string(get<1>(p)) + ", " +
to_string(get<2>(p)) + ", " + to_string(get<3>(p)) + ")";
}
string to_string(vector<bool> v) {
bool first = true;
string res = "{";
for (int i = 0; i < static_cast<int>(v.size()); i++) {
if (!first)
res += ", ";
first = false;
res += to_string(v[i]);
}
res += "}";
return res;
}
template <size_t N> string to_string(bitset<N> v) {
string res = "";
for (size_t i = 0; i < N; i++)
res += static_cast<char>('0' + v[i]);
return res;
}
template <typename A> string to_string(A v) {
bool first = true;
string res = "{";
for (const auto &x : v) {
if (!first) {
res += ", ";
}
first = false;
res += to_string(x);
}
res += "}";
return res;
}
template <typename T> string to_string(priority_queue<T> &q) {
priority_queue<T> copy;
bool first = true;
string res = "{";
while (!q.empty()) {
if (!first) {
res += ", ";
}
first = false;
res += to_string(q.top());
copy.push(q.top());
q.pop();
}
swap(q, copy);
res += "}";
return res;
}
template <typename T> string to_string(queue<T> &q) {
queue<T> copy;
bool first = true;
string res = "{";
while (!q.empty()) {
if (!first) {
res += ", ";
}
first = false;
res += to_string(q.front());
copy.push(q.front());
q.pop();
}
swap(q, copy);
res += "}";
return res;
}
void debug_out() { cerr << endl; }
template <typename Head, typename... Tail> void debug_out(Head H, Tail... T) {
cerr << " " << to_string(H);
debug_out(T...);
}
#define rep(i, n) for (ll(i) = 0; (i) < (n); (i)++)
#define revrep(i, n) for (ll(i) = (n)-1; (i) >= 0; (i)--)
#define For(i, a, b) for (ll(i) = (a); (i) < (b); (i)++)
#define revFor(i, b, a) for (ll(i) = (b)-1; (i) >= (a); (i)--)
#define all(a) (a).begin(), (a).end()
#define rall(a) (a).rbegin(), (a).rend()
#define isUpper(c) ('a' - (c) > 0)
#define isNum(c) (0 <= (c) - '0' && (c) - '0' <= 9)
#define toLower(c) char((c) + 0x20)
#define toUpper(c) char((c)-0x20)
#define pb push_back
#define mp make_pair
#define mt make_tuple
#define pr(a) std::cout << (a)
#define prl(a) std::cout << (a) << endl
#define prl2(a, b) std::cout << (a) << " " << (b) << endl
#define prl3(a, b, c) std::cout << (a) << " " << (b) << " " << (c) << endl
#define prl4(a, b, c, d) \
std::cout << (a) << " " << (b) << " " << (c) << " " << (d) << endl
#define prs(a) std::cout << (a) << " "
#define prs2(a, b) std::cout << (a) << " " << (b) << " "
#define prs3(a, b, c) std::cout << (a) << " " << (b) << " " << (c) << " "
#define prs4(a, b, c, d) \
std::cout << (a) << " " << (b) << " " << (c) << " " << (d) << " "
#define yn(condition) \
if ((condition)) \
prl("Yes"); \
else \
prl("No");
#define YN(condition) \
if ((condition)) \
prl("YES"); \
else \
prl("NO");
#define in1(a) cin >> (a)
#define in2(a, b) cin >> (a) >> (b)
#define in3(a, b, c) cin >> (a) >> (b) >> (c)
#define in4(a, b, c, d) cin >> (a) >> (b) >> (c) >> (d)
#define in5(a, b, c, d, e) cin >> (a) >> (b) >> (c) >> (d) >> (e)
#define in6(a, b, c, d, e, f) cin >> (a) >> (b) >> (c) >> (d) >> (e) >> (f)
#define in7(a, b, c, d, e, f, g) \
cin >> (a) >> (b) >> (c) >> (d) >> (e) >> (f) >> (g)
#define e1 first
#define e2 second
#define popcount(i) __builtin_popcountl((i))
#define Forchar(c, a, z) for (char(c) = (a); (c) <= (z); (c)++)
#define cntchar(s, c) count(all((s)), c)
#define substring(s, start, end) s.substr((start), (end) - (start) + 1)
#define prl_nd(num, digits) \
std::cout << fixed << setprecision(digits) << (num) << endl;
#define prl_time(s) \
prl3("Elapsed Time:", 1000.0 * (clock() - s) / CLOCKS_PER_SEC, "[ms]");
#define char_to_str(c) string(1, (c))
#ifdef _LOCAL
#define debug(...) cerr << "[" << #__VA_ARGS__ << "]:", debug_out(__VA_ARGS__)
#else
#define debug(...) 42
#endif
ll modf(ll x, ll m) { return (x % m + m) % m; }
template <class T> inline bool chmax(T &a, T b) {
if (a < b) {
a = b;
return true;
}
return false;
}
template <class T> inline bool chmin(T &a, T b) {
if (a > b) {
a = b;
return true;
}
return false;
}
struct MaxFlow {
struct F_edge {
ll to, rev, capacity;
F_edge(ll to, ll rev, ll capacity) : to(to), rev(rev), capacity(capacity) {}
};
typedef vector<F_edge> F_edges;
vector<F_edges> graph;
ll n_vertex;
// level is the shortest path to get a given node from the source node.
vl level, iter;
MaxFlow(ll n_vertex) : n_vertex(n_vertex) { graph.resize(n_vertex); }
void add_edge(ll from, ll to, ll capacity = 1) {
graph[from].pb({to, ll(graph[to].size()), capacity});
graph[to].pb({from, ll(graph[from].size()) - 1, 0});
}
void bfs(ll source) {
level = vl(n_vertex, -1);
level[source] = 0;
queue<ll> q;
q.push(source);
while (!q.empty()) {
ll vertex = q.front();
q.pop();
rep(i, graph[vertex].size()) {
ll target = graph[vertex][i].to;
ll cap_target = graph[vertex][i].capacity;
// if the flow can be into the target node, implement below.
if (cap_target > 0 && level[target] < 0) {
level[target] = level[vertex] + 1;
q.push(target);
}
}
}
}
ll dfs(ll vertex, ll sink, ll flow) {
if (vertex == sink)
return flow;
for (ll &i = iter[vertex]; i < graph[vertex].size(); i++) {
ll target = graph[vertex][i].to;
ll cap_target = graph[vertex][i].capacity;
ll rev_target = graph[vertex][i].rev;
// if capasitiy is not full yet and target is farther,
// then assign current flow.
if (cap_target > 0 && level[vertex] < level[target]) {
ll d = dfs(target, sink, min(cap_target, flow));
if (d > 0) { // if the flow successfully reaches the sink, reduce the
// flow from the capacity
graph[vertex][i].capacity -= d;
graph[target][rev_target].capacity += d;
return d;
}
}
}
return 0;
}
ll dinic(ll source, ll sink) {
// complexity O(EV^2)
ll flow = 0;
while (true) {
bfs(source);
// if there is no path leading to the sink, the maximum flow is 0.
if (level[sink] < 0)
return flow;
iter = vl(n_vertex, 0);
ll f;
while ((f = dfs(source, sink, INF)) > 0)
flow += f;
}
}
};
struct UnionFind {
vl parents, set_size;
set<ll> root_idx;
ll n_groups;
UnionFind(ll n) {
parents = set_size = vl(n);
n_groups = n;
rep(i, n) {
parents[i] = i;
set_size[i] = 1LL;
root_idx.insert(i);
}
}
ll root_find(ll x) {
if (parents[x] == x)
return x;
return parents[x] = root_find(parents[x]);
}
void unite(ll x, ll y) {
// priority for x is larger than that of y
x = root_find(x);
y = root_find(y);
if (x == y)
return;
parents[y] = x, set_size[x] += set_size[y];
root_idx.erase(y);
n_groups--;
}
// connected or not
bool is_same(ll x, ll y) { return root_find(x) == root_find(y); }
ll size(ll x) { return set_size[root_find(x)]; }
};
struct WeightedUnionFind {
vl parents, set_size, weights;
set<ll> root_idx;
ll n_groups;
WeightedUnionFind(ll n) {
parents = set_size = weights = vl(n);
n_groups = n;
rep(i, n) {
parents[i] = i;
set_size[i] = 1LL;
weights[i] = 0;
root_idx.insert(i);
}
}
ll root_find(ll x) {
if (parents[x] == x)
return x;
ll r = root_find(parents[x]);
weights[x] += weights[parents[x]];
return parents[x] = r;
}
ll weight(ll x) {
root_find(x);
return weights[x];
}
void unite(ll x, ll y, ll w) {
// priority for x is larger than that of y
w += weight(x) - weight(y);
x = root_find(x);
y = root_find(y);
if (x == y)
return;
parents[y] = x, set_size[x] += set_size[y];
root_idx.erase(y);
weights[y] = w;
n_groups--;
}
// connected or not
bool is_same(ll x, ll y) { return root_find(x) == root_find(y); }
ll size(ll x) { return set_size[root_find(x)]; }
ll difference(ll x, ll y) { return weight(y) - weight(x); }
};
struct Doubling { // ABC167D
ll n;
ll sz;
vl2 next;
/*
next[k + 1][i] := next[k][next[k][i]]
next[0][i] := edge[i]
e.g. a0, a1, ..., an-1 / 0 <= ai <= n - 1
a0 -> a[a0] -> a[a[a0]] -> ... -> a[a[...[a[0]]]] (m times)
Let the function repeatedly inputting a[i] m times be f[m](a[i])
- get(i, x) returns f[x](a[i])
- lower_bound(i, j) returns minimum x which satisfies f[x](a[i]) >= j.
if not possible returns n.
*/
// edge[i]: i -> edge[i] by one operation
Doubling(vl &edge) : n(edge.size()), sz(62) {
next.resize(sz, vl(n, -1));
rep(i, n) next[0][i] = edge[i];
rep(k, sz - 1) rep(i, n) next[k + 1][i] = next[k][next[k][i]];
}
// return the result obtained when starting from i and advancing x times
ll get(ll i, ll x) {
ll ret = i;
rep(bit, sz) {
if (!(x >> bit & 1))
continue;
ret = next[bit][ret];
}
return ret;
}
// return the iteration x where the value exceeds j for the first time.
// if it is not possible, then return n.
ll lower_bound(ll i, ll j) {
ll cur = i, acc = 0;
revrep(wid, sz) {
if (next[wid][cur] < j) {
acc += 1LL << wid;
cur = next[wid][cur];
}
}
return min(n, acc + 1);
}
};
template <class T> class LowestCommonAncestor {
public:
ll N, logN;
vl depth, len;
T tree;
vl2 parents;
LowestCommonAncestor(ll n, T &_tree) {
N = n;
logN = 0;
while (N > (1LL << logN))
logN++;
depth = len = vl(N);
parents = vl2(logN, vl(N));
tree = _tree;
_init(0, -1, 0, 0);
_build();
}
void _init(ll source, ll parent, ll d, ll l) {
depth[source] = d;
parents[0][source] = parent;
len[source] = l;
rep(i, tree[source].size()) {
ll target = tree[source][i].to;
ll cost = tree[source][i].cost;
if (target == parent)
continue;
_init(target, source, d + 1, cost + l);
}
}
void _build() {
rep(k, logN - 1) rep(n, N) {
// if there is no parent, -1.
// otherwise, the parent of the parent is the parent.
if (parents[k][n] < 0)
parents[k + 1][n] = -1;
else
parents[k + 1][n] = parents[k][parents[k][n]];
}
}
ll query(ll u, ll v) {
if (depth[u] > depth[v])
swap(u, v);
rep(k, logN) if ((depth[v] - depth[u]) >> k & 1) v = parents[k][v];
if (u == v)
return u;
revrep(k, logN) {
if (parents[k][u] != parents[k][v]) {
u = parents[k][u];
v = parents[k][v];
}
}
return parents[0][u];
}
ll distance(ll u, ll v) {
ll w = query(u, v);
return len[u] + len[v] - 2 * len[w];
}
};
struct BinaryIndexedTree {
ll n, ini, M;
vl dat;
BinaryIndexedTree(ll n, ll ini = 0) : dat(n + 1, ini), n(n), ini(ini) {
M = 1;
while (M <= n)
M <<= 1;
};
// x: 1001 1010 1100 1011 1101 1111
// x & - x: 0001 0010 0100 0001 0001 0001
// ->: 1010 1100 10000 1100 1100 10000
ll update_func(ll val, ll d) {
// if maximum -> max(val, dat)
// return max(val, d);
// if cumulative sum
return val + d;
}
ll query(ll i) {
/*
v[0] + v[1] + ... + v[i]
e.g.) i = 10101
itr1. 10101 -> 10100
itr2. 10100 -> 10000
itr3. 10000 -> 00000 (break)
*/
if (i < 0)
return ini;
ll ret = 0;
for (ll j = i; j >= 0; j = (j & (j + 1)) - 1) {
ret = update_func(ret, dat[j]);
}
return ret;
}
ll query(ll l, ll r) {
// a[l] + a[l + 1] + ... + a[r - 1] + a[r]
return query(r) - query(l - 1);
}
ll lower_bound(ll key) {
// v[0] + v[1] + ... + v[left - 1] < key <= v[0] + v[1] + ... + v[left]
if (key <= 0)
return 0;
ll left = 0, right = 1;
while (right <= n)
right <<= 2;
for (ll i = right; i > 0; i /= 2) {
if (left + i <= n && dat[left + i - 1] < key) {
key -= dat[left + i - 1];
left += i;
}
}
return left;
}
void update(ll i, ll val) {
/*
e.g.) i = 10101, n = 11111
itr1. i: 10101, i+1: 10110 -> 10111
itr2. i: 10111, i+1: 11000 -> 11111 (break)
*/
if (i < 0)
return;
for (ll j = i; j < n; j |= j + 1) {
dat[j] = update_func(val, dat[j]);
}
}
};
struct SegmentTree {
ll n, ini, minimize;
vl dat;
// when seeking minimum
// ini = INF
// when seeking maximum
// ini = -INF
SegmentTree(ll n_, bool minimize_ = true) {
n = 1;
minimize = minimize_;
if (minimize)
ini = INF;
else
ini = -INF;
while (n < n_)
n *= 2;
dat.resize(2 * n - 1);
rep(i, 2 * n - 1) dat[i] = ini;
};
void update(ll idx, ll val, bool force = false) {
idx += n - 1;
if (!force) {
if (minimize && dat[idx] <= val)
return;
if (!minimize && dat[idx] >= val)
return;
}
dat[idx] = val;
while (idx > 0) {
idx = (idx - 1) / 2;
// when seeking minimum
if (minimize)
dat[idx] = min(dat[idx * 2 + 1], dat[idx * 2 + 2]);
// when seeking maximum
else
dat[idx] = max(dat[idx * 2 + 1], dat[idx * 2 + 2]);
}
}
ll query(ll l, ll r) {
// ### NOTE ###
// the range is [l, r]
// l, l + 1, ..., r
r++; // to adjust to this method
return query_segment(l, r, 0, 0, n);
}
ll query_segment(ll a, ll b, ll idx, ll l, ll r) {
assert(a <= b);
if (r <= a || b <= l)
return ini;
if (a <= l && r <= b)
return dat[idx];
else {
ll seg1 = query_segment(a, b, idx * 2 + 1, l, (l + r) / 2);
ll seg2 = query_segment(a, b, idx * 2 + 2, (l + r) / 2, r);
// when seeking minimum
if (minimize)
return min(seg1, seg2);
// when seeking maximum
else
return max(seg1, seg2);
}
}
};
template <class Target> class RerootingTreeDP {
public:
using T = typename Target::type;
struct DP_edge {
ll to, rev; // rev is the index to trace the source node.
T value; // objective value
};
private:
ll n;
void dfs_fwd(ll source, ll parent) {
ll par_idx = -1;
vector<T> values;
rep(i, tree[source].size()) {
const DP_edge &e = tree[source][i];
if (e.to == parent) {
par_idx = i;
continue;
}
dfs_fwd(e.to, source);
values.pb(e.value);
}
// If the parent != -1, update the value on edge from parent to source
if (par_idx != -1) {
ll src_idx = tree[source][par_idx].rev;
// update values on the edge from parent to source
tree[parent][src_idx].value = Target::merge(values);
}
}
void dfs_bwd(ll source, ll parent) {
vector<T> values;
for (auto &&e : tree[source])
values.pb(e.value);
values = Target::evaluate(values);
rep(i, tree[source].size()) {
const DP_edge &e = tree[source][i];
if (e.to == parent)
continue;
// tree[e.to][e.rev]: e.to -> source
tree[e.to][e.rev].value = values[i];
dfs_bwd(e.to, source);
}
}
public:
UnionFind uf;
vector<vector<DP_edge>> tree;
RerootingTreeDP(ll n) : n(n), uf(n), tree(n) {}
void add_edge(ll u, ll v, T val) {
assert(!uf.is_same(u, v));
tree[u].pb({v, ll(tree[v].size()), val});
tree[v].pb({u, ll(tree[u].size()) - 1, val});
uf.unite(u, v);
}
void dp() {
vb visited(n, false);
rep(i, n) {
if (visited[uf.root_find(i)])
continue;
dfs_fwd(i, -1);
visited[uf.root_find(i)] = true;
}
visited.assign(n, false);
rep(i, n) {
if (visited[uf.root_find(i)])
continue;
dfs_bwd(i, -1);
visited[uf.root_find(i)] = true;
}
}
ll size() const { return tree.size(); }
};
// ABC160F is one example
// Modify the functions evaluate and merge based on given problems
struct Merger {
using type = ll;
// This is the exaple of the number of children
static type merge(const vector<type> &value) {
// merge the result below the source node
// each value is from each child node of the source node
// value[i] := f(child i)
// Here, we would like to obtain f(source) using f(child i) (i = 0, 1, ...,
// n_children)
ll ret = 1;
for (auto &&v : value)
ret += v;
return ret;
}
static vector<type> evaluate(const vector<type> &value) {
// value[i] := f(source -> child i)
// we would like to obtain f(child i -> source)
// child j (j != i) is the grandchildren of child i
// represent f(child i -> source) using f(source -> j) (j != i)
// L[i + 1] := the result using f(source -> k) (k = 0, 1, ..., i)
// R[i] := the result using f(source -> k) (k = i, i + 1, ..., n_children)
const ll n_children = value.size();
vl L(n_children + 1, 0), R(n_children + 1, 0);
rep(i, n_children) L[i + 1] = L[i] + value[i];
revrep(i, n_children) R[i] = R[i + 1] + value[i];
vl ret(n_children);
rep(i, n_children) ret[i] = L[i] + R[i + 1] + 1;
return ret;
}
};
struct StronglyConnectedComponents {
/*
dag: [cmp idx][# of connected cmp]
the index of connected cmp
cmp: [cmp idx][# of vertex included in a cmp]
the index of vertex
cmp_idx: [vertex idx]
the component which the vertex belongs to
Use graph_rev when you would like to know the vertex with zero indegree
*/
ll n, n_cmp;
vl2 graph, graph_rev, dag, cmp;
vl order, visited, cmp_idx;
StronglyConnectedComponents() {}
StronglyConnectedComponents(ll sz)
: n(sz), graph(sz), graph_rev(sz), visited(sz), cmp_idx(sz) {}
void add_edge(ll from, ll to) {
graph[from].pb(to);
graph_rev[to].pb(from);
}
void input(ll m, ll offset = -1) {
ll a, b;
rep(i, m) {
in2(a, b);
add_edge(a + offset, b + offset);
}
}
ll operator[](ll k) { return cmp_idx[k]; }
void dfs_fwd(ll source) {
visited[source] = 1;
rep(i, graph[source].size()) {
ll target = graph[source][i];
if (!visited[target])
dfs_fwd(target);
}
order.pb(source);
}
void dfs_bwd(ll source, ll num) {
visited[source] = 1, cmp_idx[source] = num;
cmp[num].pb(source);
rep(i, graph_rev[source].size()) {
ll target = graph_rev[source][i];
if (!visited[target])
dfs_bwd(target, num);
}
}
ll build() {
fill(all(visited), 0);
order.clear();
rep(i, n) if (!visited[i]) dfs_fwd(i);
fill(all(visited), 0);
ll num = 0;
revrep(i, order.size()) {
if (!visited[order[i]]) {
dag.pb(vl());
cmp.pb(vl());
dfs_bwd(order[i], num++);
}
}
rep(i, n) for (ll to : graph[i]) if (cmp_idx[i] != cmp_idx[to])
dag[cmp_idx[i]]
.pb(cmp_idx[to]);
rep(i, num) {
sort(all(dag[i]));
dag[i].erase(unique(all(dag[i])), dag[i].end());
}
return n_cmp = num;
}
// if the v-th vertex is in loop or not
bool in_loop(ll v) { return cmp[cmp_idx[v]].size() > 1; }
// if the dag has loops or not
bool has_loop() {
rep(i, cmp.size()) if (cmp[i].size() > 1) return true;
return false;
}
};
struct CombinationMemo {
ll sz, mod;
vl fact, fact_inv, minv;
CombinationMemo(ll sz, ll _mod) : sz(sz), mod(_mod) {
fact.resize(sz + 5);
fact_inv.resize(sz + 5);
minv.resize(sz + 5);
init();
}
void init() {
fact[0] = fact[1] = 1;
minv[1] = 1;
fact_inv[0] = fact_inv[1] = 1;
For(i, 2, sz + 3) {
fact[i] = (i * fact[i - 1]) % mod;
minv[i] = mod - minv[mod % i] * (mod / i) % mod;
fact_inv[i] = fact_inv[i - 1] * minv[i] % mod;
}
}
ll nCk(ll n, ll r) {
if (n == r && n == 0)
return 1;
else if (n <= 0 || r < 0 || r > n)
return 0;
ll val = (fact[n] * fact_inv[n - r]) % mod;
val *= fact_inv[r];
return val % mod;
}
ll nPk(ll n, ll r) {
if (n == r && n == 0)
return 1;
else if (n <= 0 || r < 0 || r > n)
return 0;
ll val = (fact[n] * fact_inv[n - r]) % mod;
return val % mod;
}
};
struct PowerMemo {
ll sz, mod, base;
vl powB;
PowerMemo(ll sz, ll base, ll _mod) : sz(sz), base(base), mod(_mod) {
powB.resize(sz + 5);
init();
}
void init() {
powB[0] = 1;
rep(i, sz + 3) powB[i + 1] = (powB[i] * base) % mod;
}
ll operator[](ll k) { return powB[k]; }
};
struct Grid2D {
Graph graph;
ll Width, Height;
Grid2D(ll w, ll h, vb2 &block) : Width(w), Height(h) {
graph.resize(w * h);
_build(block);
}
ll pos_to_idx(point p) { return p.y * Width + p.x; }
point idx_to_pos(ll idx) { return {idx % Width, idx / Width}; }
bool undefined_region(point p, vb2 &block) {
if (p.x < 0 || p.x > Width - 1)
return true;
if (p.y < 0 || p.y > Height - 1)
return true;
if (block[p.x][p.y])
return true;
return false;
}
void _build(vb2 &block, ll val = 1) {
rep(x, Width) rep(y, Height) {
point p = {x, y};
ll idx1 = pos_to_idx(p);
ll idx2;
if (block[x][y])
continue;
rep(i, 4) {
point nxt = p + dirs[i];
idx2 = pos_to_idx(nxt);
if (!undefined_region(nxt, block))
graph[idx1].pb(
{idx2, val}); // dist[idx1][idx2] = val; (warshall-floyd)
}
}
}
};
struct Cumulative2D {
vl2 cum;
ll w, h;
Cumulative2D(ll w, ll h) : w(w), h(h) { cum = vl2(w + 1, vl(h + 1, 0)); }
template <typename T> void build(vector<T> &vec) {
// never forget building
rep(x, w + 1) cum[x][0] = 0;
rep(y, h + 1) cum[0][y] = 0;
rep(y, h) rep(x, w) cum[x + 1][y + 1] = cum[x][y + 1] + vec[x][y];
rep(x, w + 1) rep(y, h) cum[x][y + 1] += cum[x][y];
}
ll func(ll x, ll y, ll dx, ll dy) {
// 1-indexed
// the rectangle of (x, y), (x + dx, y), (x, y + dy) and (x + dx, y + dy)
// think about the case of (1, 1, 1, 1).
if (x + dx > w || y + dy > h)
return -INF;
ll val = cum[x + dx][y + dy];
val += cum[x][y];
val -= cum[x][y + dy];
val -= cum[x + dx][y];
return val;
}
};
struct LinearSystemIncidence {
struct Edge {
ll idx, to;
bool fwd;
};
/*
Ax = c
A: A in R^(V * E) <- given
x: x in R^E <- estimate this vector
c: c in R^V <- given
*/
ll n_vertex, n_edge;
bool mod2;
vl x;
vb visited;
vector<vector<Edge>> graph;
LinearSystemIncidence(ll n, vpl &es, bool mod2 = false)
: n_vertex(n), n_edge(es.size()), mod2(mod2) {
graph.resize(n);
visited.resize(n);
rep(i, n_edge) {
auto &e = es[i];
graph[e.e1].pb({i, e.e2, true});
graph[e.e2].pb({i, e.e1, false});
}
}
ll dfs(vl &c, ll src) {
visited[src] = true;
ll ret = c[src];
for (Edge &e : graph[src]) {
if (visited[e.to])
continue;
ll tmp = dfs(c, e.to);
x[e.idx] = e.fwd ? tmp : -tmp;
ret += tmp;
if (mod2)
x[e.idx] = modf(x[e.idx], 2);
}
return mod2 ? ret % 2 : ret;
}
bool solve(vl &c) {
x.assign(n_edge, 0);
visited.assign(n_vertex, false);
rep(src, n_vertex) {
if (visited[src])
continue;
if (dfs(c, src))
return false;
}
return true;
}
};
struct BigInt10 {
string num;
map<ll, vl> mod;
BigInt10(string num = "0") : num(num) {}
size_t size() { return num.size(); }
void compute_mod(ll _mod) {
ll sz = num.size();
mod[_mod] = vl(sz + 1, 0);
ll tenth = 1;
rep(i, sz) {
ll top = num[sz - 1 - i] - '0';
mod[_mod][i + 1] = (mod[_mod][i] + top * tenth) % _mod;
(tenth *= 10) %= _mod;
}
}
ll operator[](ll k) { return num[k] - '0'; }
ll subseq_mod(ll l, ll r, ll m) {
// s1 s2 ... sl .... sr ... sn
// the modulo of 00 ... 0 sl ... sr 00 ... 0
assert(l <= r);
ll sz = num.size();
ll tot = mod[m][sz];
ll ls = modf(tot - mod[m][sz - l], m);
ll rs = mod[m][sz - r];
return (tot - ls - rs + 2 * m) % m;
}
bool operator<(BigInt10 &n2) const {
if (num.length() < n2.size())
return true;
else if (num.length() > n2.size())
return false;
rep(i, num.length()) if (ll(num[i] - '0') !=
n2[i]) return ll(num[i] - '0') < n2[i];
return false;
}
bool operator<=(BigInt10 &n2) const {
if (num.length() < n2.size())
return true;
else if (num.length() > n2.size())
return false;
rep(i, num.length()) if (ll(num[i] - '0') !=
n2[i]) return ll(num[i] - '0') < n2[i];
return true;
}
bool operator>(BigInt10 &n2) const {
if (num.length() > n2.size())
return true;
else if (num.length() < n2.size())
return false;
rep(i, num.length()) if (ll(num[i] - '0') !=
n2[i]) return ll(num[i] - '0') > n2[i];
return false;
}
bool operator>=(BigInt10 &n2) const {
if (num.length() > n2.size())
return true;
else if (num.length() < n2.size())
return false;
rep(i, num.length()) if (ll(num[i] - '0') !=
n2[i]) return ll(num[i] - '0') > n2[i];
return true;
}
};
istream &operator>>(istream &is, BigInt10 &a) { return is >> a.num; }
ostream &operator<<(ostream &os, BigInt10 &a) { return os << a.num; }
BigInt10 add(BigInt10 s1, BigInt10 s2) {
ll sz1 = s1.size(), sz2 = s2.size(), sz = max(sz1, sz2);
ll r = abs(sz2 - sz1);
string a(r, '0');
if (sz1 < sz2)
s1.num = a + s1.num;
else if (sz1 > sz2)
s2.num = a + s2.num;
bool inc = false;
rep(i, sz) {
ll nxt = s1[sz - 1 - i] + s2[sz - 1 - i] + inc;
if (nxt >= 10)
inc = true;
else
inc = false;
s1.num[sz - 1 - i] = to_string(nxt % 10)[0];
}
if (inc)
s1.num = "1" + s1.num;
return s1;
}
BigInt10 add(BigInt10 s, ll x) { return add(s, BigInt10(to_string(x))); }
BigInt10 subtract(BigInt10 s1, BigInt10 s2) {
ll sz1 = s1.size(), sz2 = s2.size(), sz = max(sz1, sz2);
assert(sz1 >= sz2);
ll r = abs(sz2 - sz1);
string a(r, '0');
if (sz1 > sz2)
s2.num = a + s2.num;
bool dec = false;
rep(i, sz) {
ll nxt = s1[sz - 1 - i] - s2[sz - 1 - i] - dec;
if (nxt < 0)
dec = true;
else
dec = false;
s1.num[sz - 1 - i] = to_string((nxt + 10) % 10)[0];
}
ll n0 = 0;
while (s1.num[n0] == '0')
n0++;
s1.num = substring(s1.num, n0, sz);
return s1;
}
BigInt10 subtract(BigInt10 s, ll x) {
return subtract(s, BigInt10(to_string(x)));
}
BigInt10 multiply(BigInt10 s, ll x) {
assert(x <= 10);
assert(x >= 0);
if (x == 0)
return BigInt10("0");
else if (x == 1)
return BigInt10(s.num);
if (x == 10)
return BigInt10(s.num + "0");
ll sz = s.size();
ll inc = 0;
rep(i, sz) {
ll nxt = s[sz - 1 - i] * x + inc;
inc = nxt / 10;
s.num[sz - 1 - i] = to_string(nxt % 10)[0];
}
if (inc)
s.num = to_string(inc) + s.num;
return s;
}
BigInt10 multiply(BigInt10 s1, BigInt10 s2) {
ll sz = s2.size();
BigInt10 ret;
rep(i, sz) {
ll x = s2[sz - 1 - i];
ret = add(ret, multiply(s1, x));
s1.num += "0";
}
return ret;
}
BigInt10 shift(BigInt10 s, ll k) {
if (k >= s.size())
return BigInt10("0");
s.num = substring(s.num, 0, s.size() - k - 1);
return s;
}
struct BigInt2 {
string num;
ll sz;
map<ll, vl> mod;
ll nz;
BigInt2(string num) : num(num), sz(num.size()) {
nz = 0;
rep(i, sz) if (num[i] == '1') nz++;
}
size_t size() { return num.size(); }
void compute_mod(ll _mod) {
mod[_mod] = vl(sz + 1, 0);
ll base = 1;
rep(i, sz) {
ll top = num[sz - 1 - i] - '0';
mod[_mod][i + 1] = (mod[_mod][i] + top * base) % _mod;
(base *= 2) %= _mod;
}
}
ll bit_count() { return nz; }
ll operator[](ll k) { return num[k] - '0'; }
ll subseq_mod(ll l, ll r, ll m) {
// s1 s2 ... sl .... sr ... sn
// the modulo of 00 ... 0 sl ... sr 00 ... 0
assert(l <= r);
ll tot = mod[m][sz];
ll ls = modf(tot - mod[m][sz - l], m);
ll rs = mod[m][sz - r];
return modf(tot - ls - rs, m);
}
bool operator<(BigInt10 &n2) const {
if (num.length() < n2.size())
return true;
else if (num.length() > n2.size())
return false;
rep(i, num.length()) if (ll(num[i] - '0') !=
n2[i]) return ll(num[i] - '0') < n2[i];
return false;
}
bool operator>(BigInt10 &n2) const {
if (num.length() > n2.size())
return true;
else if (num.length() < n2.size())
return false;
rep(i, num.length()) if (ll(num[i] - '0') !=
n2[i]) return ll(num[i] - '0') > n2[i];
return num > n2.num;
}
};
istream &operator>>(istream &is, BigInt2 &a) { return is >> a.num; }
ostream &operator<<(ostream &os, BigInt2 &a) { return os << a.num; }
struct MedianManager {
ll sz = 0, median = 0;
priority_queue<ll> lower;
priority_queue<ll, vl, greater<ll>> upper;
vl in, out;
ll ini;
MedianManager(ll _ini = -INF) {
ini = _ini;
in = out = vl(2, _ini);
}
void update(ll v) {
sz++;
if (sz == 1)
median = v, in[0] = in[1] = out[0] = out[1] = ini;
else if (sz % 2 == 0) {
if (v < median)
lower.push(v), upper.push(median), in[0] = v, in[1] = median,
out[0] = out[1] = ini;
else
lower.push(median), upper.push(v), in[0] = median, in[1] = v,
out[0] = out[1] = ini;
} else if (sz % 2) {
ll lower_top = lower.top(), upper_bottom = upper.top();
if (v < lower_top)
median = lower_top, lower.pop(), lower.push(v), in[0] = v,
out[0] = median, in[1] = out[1] = ini;
else if (v > upper_bottom)
median = upper_bottom, upper.pop(), upper.push(v), in[1] = v,
out[1] = median, in[0] = out[0] = ini;
else
median = v, in[0] = out[0] = in[1] = out[1] = ini;
}
}
ll size() { return sz; }
pl medians() {
return sz % 2 ? mp(median, median) : mp(lower.top(), upper.top());
}
};
struct RangeTypeQuery {
ll n, cur, Q;
vl types, most_right, ans;
vtp3 queries;
BinaryIndexedTree bit;
RangeTypeQuery(ll _n, ll _Q, BinaryIndexedTree _bit) : bit(_bit) {
n = _n, Q = _Q, cur = 0;
queries.resize(Q);
ans.resize(Q);
types.resize(n);
most_right = vl(n, -1);
}
void get_queries(ll offset = -1) {
rep(i, Q) {
ll l, r;
in2(l, r);
l += offset, r += offset;
queries[i] = {r, l, i};
}
sort(all(queries));
}
void get_sequence(ll offset = -1) {
rep(i, n) {
in1(types[i]);
types[i] += offset;
// type num must be less than n.
assert(types[i] <= n - 1);
}
}
void update(ll nxt) {
while (cur <= nxt) {
if (most_right[types[cur]] != -1)
bit.update(most_right[types[cur]], -1);
most_right[types[cur]] = cur;
bit.update(most_right[types[cur]], 1);
cur++;
}
}
void process_queries() {
rep(i, Q) {
ll l, r, v, idx;
tie(r, l, idx) = queries[i];
update(r);
v = bit.query(l, r);
ans[idx] = v;
}
}
};
ll gcd(ll m, ll n) {
ll a = max(m, n);
ll b = min(m, n);
while (b != 1 && b != 0) {
a %= b;
swap(a, b);
}
return b == 1 ? 1 : a;
}
ll lcm(ll m, ll n) { return m / gcd(m, n) * n; }
ll power_normal(ll a, ll power) {
ll value = 1;
while (power != 0) {
if (power & 1)
value = value * a;
a = a * a;
power = power >> 1;
}
return value;
}
ll power_mod(ll a, ll power, ll mod) {
__int128_t value = 1;
__int128_t b = a;
while (power != 0) {
if (power & 1)
value = (value * b) % mod;
b = (b * b) % mod;
power = power >> 1;
}
return value % mod;
}
ll modinv(ll a, ll mod) { return power_mod(a, mod - 2, mod); }
ll combination(ll n, ll r, ll mod) {
if (n == r && n == 0)
return 1;
else if (n <= 0 || r < 0 || r > n)
return 0;
ll numerator = 1;
ll denomenator = 1;
for (ll i = 0; i < r; i++) {
ll num = (n - i) % mod, den = (i + 1) % mod;
(numerator *= num) %= mod;
(denomenator *= modinv(den, mod)) %= mod;
}
return (numerator * denomenator) % mod;
}
vl2 pascal_triangle(ll n) {
/*
Complexity: O(n^2)
The upper bound of n is nearly 50.
Parameters
----------
n; the size of returned vector
Returns
-------
comb[i][j]: combination(i, j). 0 <= i <= n, 0 <= j <= i
*/
vl2 comb(n + 1, vl(n + 1));
comb[0][0] = 1;
For(i, 1, n + 1) rep(j, i + 1) {
comb[i][j] += comb[i - 1][j];
if (j > 0)
comb[i][j] += comb[i - 1][j - 1];
}
return comb;
}
ld log_combination(ll n, ll r) {
if (n == r && n == 0)
return 0;
else if (n <= 0 || r < 0 || r > n)
return -INF;
ld val = 0;
for (ll i = 0; i < r; i++) {
val += log(n - i);
val -= log(i + 1);
}
return val;
}
string bin_expression(ll n, ll dig) {
string s = "";
rep(i, dig) {
s += to_string(n % 2);
n /= 2;
}
reverse(all(s));
return s;
}
bool is_prime(ll n) {
if (n <= 1)
return false;
for (ll i = 2; i * i <= n; i++) {
if (n % i == 0)
return false;
}
return true;
}
vl eratosthenes(ll n, vl &div) {
// return the list of prime number up to n
div = vl(n + 1, 0);
vl ps;
rep(i, n + 1) div[i] = i;
For(i, 2, n + 1) {
if (div[i] == i) {
for (ll j = 2 * i; j <= n; j += i)
chmin(div[j], i);
ps.pb(i);
}
}
return ps;
}
map<ll, ll> quick_prime_factorization(vl &div, ll n) {
// ABC177E using the div from eratosthenes
map<ll, ll> table;
while (n != 1) {
table[div[n]]++;
n /= div[n];
}
return table;
}
map<ll, ll> prime_factorization(ll n) {
ll i = 2;
map<ll, ll> table;
while (i * i <= n) {
while (n % i == 0) {
table[i]++;
n /= i;
}
i++;
}
if (n > 1)
table[n] = 1;
return table;
}
vl divisor_table(ll n, bool asc = true) {
vl table;
ll i = 1;
while (i * i <= n) {
if (n % i == 0) {
table.pb(i);
if (i * i != n)
table.pb(n / i);
}
i++;
}
if (asc)
sort(all(table));
else
sort(rall(table));
return table;
}
ll euler_function(ll x) {
// the number of coprime numbers for x (including 1)
vl dt = divisor_table(x, false);
ll ret = x;
map<ll, ll> cnt;
for (ll d : dt) {
if (d == 1)
continue;
cnt[d] = x / d;
for (auto &c : cnt)
if (c.e1 != d && c.e1 % d == 0)
cnt[d] -= c.e2;
ret -= cnt[d];
}
return ret;
}
vl base_converter(ll num, ll base, ll sz) {
vl coefs(sz);
ll cur = 0;
while (num) {
ll val = num % base;
assert(cur < sz);
coefs[cur++] = val;
num -= val, num /= base;
}
while (cur < sz)
coefs[cur++] = 0;
return coefs;
}
string indexed_alphabet(ll leng, ll idx) {
// 0-indexed
// returns the string whose order is the-idx-th in the set of strings of the
// given length.
string ret = "";
if (idx >= power_normal(26, leng))
return ret;
vl cs = base_converter(idx, 26, leng);
reverse(all(cs));
rep(i, cs.size()) ret += char('a' + cs[i]);
return ret;
}
ll alphabetical_index(string s) {
// including the strings whose length is less than that of s.
// excluding the empty string.
ll leng = s.length();
ll ret = 0, p = 1;
rep(i, leng) {
ll b = s[leng - 1 - i] - 'a';
ret += p + p * b, p *= 26;
}
return ret;
}
// just change the input if you want to change the target.
// If you want to check the common sequences in two strings,
// combine them. e.g. ABC150F
template <typename T> vl z_algorithm(T &s, ll n) {
/*
Paramters
---------
T: the string or list of interest
n: the size of string or list
Returns
-------
res[i] is the maximum number of K which satisfies
s[:K] == s[i:i + K]
for each i = 0, 1, 2, ..., n - 1.
*/
vl res(n);
res[0] = n;
ll i1 = 1, i2 = 0;
while (i1 < n) {
/*
i1: the starting point
i2: the length of substring
*/
while (i1 + i2 < n && s[i2] == s[i1 + i2])
++i2;
res[i1] = i2;
if (i2 == 0) {
++i1;
continue;
}
ll i3 = 1;
// update the already seen points
while (i1 + i3 < n && i3 + res[i3] < i2) {
res[i1 + i3] = res[i3];
++i3;
}
// update up to i1 + i3 and the next possible minimum length is i2 - i3 (=
// res[i3])
i1 += i3, i2 -= i3;
}
return res;
}
ll string_to_ll(string s) {
ll l = s.length();
ll idx = 0;
ll val = 0;
ll tenth = 1;
while (idx < l) {
ll m = s[l - 1 - idx] - '0';
val += (m * tenth);
tenth *= 10;
idx++;
}
return val;
}
string reflected_string(string s) {
string t, u;
ll n = s.length();
t = s;
reverse(all(t));
u = substring(t, 0, n - 2) + s + substring(t, 1, n - 1);
return u;
}
ld distance_between_point_line(point l_begin, point l_end, point p) {
ll xl1 = l_begin.x, yl1 = l_begin.y;
ll xl2 = l_end.x, yl2 = l_end.y;
ll xp = p.x, yp = p.y;
ll a = yl2 - yl1;
ll b = -xl2 + xl1;
ll c = -a * xl2 - b * yl2;
return abs(ld(a * xp + b * yp + c)) / ld(sqrt(a * a + b * b));
}
bool is_cross(point l1_begin, point l1_end, point l2_begin, point l2_end) {
ll x1 = l1_begin.x, y1 = l1_begin.y;
ll x2 = l1_end.x, y2 = l1_end.y;
ll x3 = l2_begin.x, y3 = l2_begin.y;
ll x4 = l2_end.x, y4 = l2_end.y;
ll val1 = (x1 - x2) * (y3 - y1) + (y1 - y2) * (x1 - x3);
ll val2 = (x1 - x2) * (y4 - y1) + (y1 - y2) * (x1 - x4);
ll val3 = (x3 - x4) * (y1 - y3) + (y3 - y4) * (x3 - x1);
ll val4 = (x3 - x4) * (y2 - y3) + (y3 - y4) * (x3 - x2);
return val1 * val2 < 0 && val3 * val4 < 0;
}
template <typename T> bool isColinear(T p1, T p2, T p3) {
T v1 = p2 - p1, v2 = p3 - p1;
return v1.x * v2.y == v1.y * v2.x;
}
template <typename T> T PerpendicularBisector(T p1, T p2) {
T vec = p2 - p1;
assert(!vec.is_zero());
T ret = {vec.y, -vec.x};
return ret;
}
template <typename T> ld Distance2DPoints(T p1, T p2) {
T vec = (p1 - p2) * (p1 - p2);
return sqrt(vec.x + vec.y);
}
ll SquaredDistance2DPoints(point p1, point p2) {
point vec = (p1 - p2) * (p1 - p2);
return vec.x + vec.y;
}
ld space_of_triangle(point p1, point p2, point p3) {
ll x1 = p1.x, y1 = p1.y;
ll x2 = p2.x, y2 = p2.y;
ll x3 = p3.x, y3 = p3.y;
ll v1 = x2 - x1;
ll u1 = y2 - y1;
ll v2 = x3 - x1;
ll u2 = y3 - y1;
ld s = ld(v1 * u2 - u1 * v2) / ld(2);
return abs(s);
}
pair<point, ll> OuterCenter(point p1, point p2, point p3) {
// the center of circle on the given three points
// return the determinant value and the product of center points and 2 *
// determinant value
point ret;
if (isColinear(p1, p2, p3)) {
ll d1 = SquaredDistance2DPoints(p1, p2);
ll d2 = SquaredDistance2DPoints(p2, p3);
ll d3 = SquaredDistance2DPoints(p3, p1);
if (d1 >= d2 && d1 >= d3) {
ret = p1 + p2;
return mp(ret, 2);
} else if (d2 >= d1 && d2 >= d3) {
ret = p2 + p3;
return mp(ret, 2);
} else {
ret = p3 + p1;
return mp(ret, 2);
}
}
point pv1 = PerpendicularBisector(p1, p2);
point pv2 = PerpendicularBisector(p1, p3);
point cv1_2x = p1 + p2, cv2_2x = p1 + p3;
// cv1 + k pv1 == cv2 + m pv2
// (pv1x -pv2x) (k) = (cv2x - cv1x)
// (pv1y -pv2y) (m) = (cv2y - cv1y)
ll det_inv = -pv1.x * pv2.y + pv1.y * pv2.x;
ll x1_2x = cv2_2x.x - cv1_2x.x, x2_2x = cv2_2x.y - cv1_2x.y;
pl c_2x_det = {-pv2.y * x1_2x + pv2.x * x2_2x,
-pv1.y * x1_2x + pv1.x * x2_2x};
// ret.x = ld(cv1_2x.x * det_inv + pv1.x * c_2x_det.e1) / ld(2 * det_inv);
// ret.y = ld(cv1_2x.y * det_inv + pv1.y * c_2x_det.e1) / ld(2 * det_inv);
ret.x = cv1_2x.x * det_inv + pv1.x * c_2x_det.e1;
ret.y = cv1_2x.y * det_inv + pv1.y * c_2x_det.e1;
ll jacobian = 2 * det_inv;
return mp(ret, jacobian);
}
ll inversion_number(vl a, ll a_max) {
/*
Paramters
---------
a: vector<ll>
All the elements must be non-negative.
Prefably the elements are compressed to reduce the computational cost.
a_max: ll
The maximum value of the vector a or the value bigger than the value
stated previously.
*/
BinaryIndexedTree bit(a_max + 1);
ll val = 0;
rep(i, a.size()) {
// i is the number of elements that have lower index than a[i].
// call the number of elements that have lower value than a[i]
// by subtracting these two, the residual number is the number of elements
// that have larger value.
val += i - bit.query(a[i] - 1); // cumulative sum from 0 to a[i] - 1
bit.update(a[i], 1);
}
return val;
}
ld bin_search(ld left, ld right, bool lb, function<bool(ld)> judge) {
ld mid;
while (right - left > EPS * 5) {
mid = (right + left) / 2;
if (lb) {
if (judge(mid))
right = mid;
else
left = mid + EPS;
} else {
if (judge(mid))
left = mid;
else
right = mid - EPS;
}
}
return right;
}
ll bin_search(ll left, ll right, bool lb, function<bool(ll)> judge) {
ll mid;
while (right > left) {
if (lb) {
// if true (satisfies the condition), range shifts smaller direction
mid = (right + left) / 2;
if (judge(mid))
right = mid;
else
left = mid + 1;
} else {
// if true (satisfies the condition), range shitfs larger direction
mid = (right + left + 1) / 2;
if (judge(mid))
left = mid;
else
right = mid - 1;
}
}
return right;
}
ld trinary_search(ld left, ld right, function<ld(ld)> func) {
// Care the value EPS!!! Compare to the condition
while (abs(right - left) > EPS) {
ld left2 = (2.0 * left + right) / 3.0;
ld right2 = (left + 2.0 * right) / 3.0;
ld f1 = func(left2);
ld f2 = func(right2);
if (f1 <= f2)
right = right2;
else if (f2 <= f1)
left = left2;
}
return right;
}
template <typename T> vector<T> compress(vector<T> v) {
// sort and remove all the duplicated values
sort(all(v));
v.erase(unique(all(v)), v.end());
return v;
}
template <typename T> map<T, ll> dict(const vector<T> &v) {
map<T, ll> d;
rep(i, v.size()) d[v[i]] = i;
return d;
}
points compress2D(vl xs, vl ys) {
/*
NOTE
----
Add the corner points if required
*/
ll n = xs.size();
vl xcs = compress(xs), ycs = compress(ys);
map<ll, ll> xd = dict(xcs), yd = dict(ycs);
points ps(n);
rep(i, n) xs[i] = xd[xs[i]], ys[i] = yd[ys[i]];
rep(i, n) ps[i] = {xs[i], ys[i]};
sort(all(ps));
return ps;
}
ll kruskal(vector<undirected_edge> &es, ll n_vertex) {
// O(ElogE)
sort(all(es));
UnionFind uf(n_vertex);
ll min_cost = 0;
rep(i, es.size()) {
undirected_edge &e = es[i];
if (!uf.is_same(e.from, e.to)) {
min_cost += e.cost;
uf.unite(e.from, e.to);
}
}
return min_cost;
}
ll LongestIncreasedSequence(vl &v) {
ll n = v.size();
vl dp(n, INF);
rep(i, n) * lower_bound(all(dp), v[i]) = v[i];
return lower_bound(all(dp), INF) - dp.begin();
}
void dijkstra(ll start, Graph &graph, vl &dist, vl &vertex_pre,
bool trace = false) {
priority_queue<pl, vpl, greater<pl>> q;
ll n = graph.size();
dist = vl(n, INF);
dist[start] = 0;
if (trace)
vertex_pre = vl(n, -1);
q.push(pl(0, start));
while (!q.empty()) {
ll idx, cost;
tie(cost, idx) = q.top();
q.pop();
if (dist[idx] < cost)
continue;
for (auto &e : graph[idx])
if (chmin(dist[e.to], dist[idx] + e.cost)) {
if (trace)
vertex_pre[e.to] = idx;
q.push(pl(dist[e.to], e.to));
}
}
}
vl get_predecessor(ll g, vl &vertex_pre) {
vl path;
for (; g != -1; g = vertex_pre[g])
path.pb(g);
reverse(all(path));
return path;
}
void warshall_floyd(vl2 &dist) {
ll n = dist.size();
// Dont forget the initialization
// rep(i, n) rep(j, n) dist[i][j] = INF * (i != j);
rep(k, n) rep(i, n) rep(j, n) dist[i][j] =
min(dist[i][j], dist[i][k] + dist[k][j]);
}
void update_warshall_floyd(vl2 &dist, ll v1, ll v2, ll cost) {
ll n = dist.size();
if (!chmin(dist[v1][v2], cost))
return;
dist[v2][v1] = dist[v1][v2];
rep(i, n) rep(j, n) dist[i][j] = min(dist[i][j], dist[i][v1] + dist[v1][j]);
rep(i, n) rep(j, n) dist[i][j] = min(dist[i][j], dist[i][v2] + dist[v2][j]);
}
// ABC061D, 137E
bool find_negative_cycle(ll n, ll goal, Graph &graph, vl &dist) {
rep(i, n) rep(v, n) rep(k, graph[v].size()) {
edge e = graph[v][k];
if (dist[e.to] != INF && dist[e.to] > dist[v] + e.cost) {
dist[e.to] = -INF;
if (goal == -1)
return true;
else if (goal == e.to)
return true;
}
}
return false;
}
bool bellman_ford(ll start, ll goal, Graph &graph, vl &dist) {
// if there is a closed circuit, it returns false. (when goal == -1)
// if the distance to goal cannot be obtained, it returns false (when goal !=
// -1)
ll n = graph.size();
dist = vl(n, INF);
dist[start] = 0;
rep(i, n) rep(v, n) rep(k, graph[v].size()) {
edge e = graph[v][k];
if (dist[v] != INF && dist[e.to] > dist[v] + e.cost)
dist[e.to] = dist[v] + e.cost;
}
if (find_negative_cycle(n, goal, graph, dist))
return false;
return true;
}
void Euler_Tour(Graph &tree, vl &euler_tour, vl &in, vl &out, ll anc = 0) {
// record only when we first reach a node and leave the node.
ll n = tree.size();
vb visited(n, false);
in = out = vl(n);
auto dfs = [&](auto dfs, ll source) -> void {
visited[source] = true;
in[source] = euler_tour.size();
euler_tour.pb(source);
bool is_leaf = true;
for (auto &e : tree[source]) {
ll target = e.to;
if (visited[target])
continue;
else
is_leaf = false;
dfs(dfs, target);
}
euler_tour.pb(-source);
out[source] = euler_tour.size() - 1;
};
dfs(dfs, anc);
}
void Euler_Tour2(Graph &tree, vl &euler_tour, vl &in, vl &out, ll anc = 0) {
// record everytime we reach a node
ll n = tree.size();
vb visited(n, false);
in = out = vl(n);
auto dfs = [&](auto dfs, ll source) -> void {
visited[source] = true;
in[source] = euler_tour.size();
euler_tour.pb(source);
bool is_leaf = true;
for (auto &e : tree[source]) {
ll target = e.to;
if (visited[target])
continue;
else
is_leaf = false;
dfs(dfs, target);
euler_tour.pb(source);
}
out[source] = euler_tour.size() - 1;
};
dfs(dfs, anc);
}
std::mt19937 create_rand_engine() {
std::random_device rnd;
std::vector<std::uint_least32_t> v(10);
std::generate(v.begin(), v.end(), std::ref(rnd));
std::seed_seq seed(v.begin(), v.end());
return std::mt19937(seed);
}
vl generate_unique_array(const size_t sz, ll vm, ll vM) {
const size_t range = static_cast<size_t>(vM - vm + 1);
const size_t num = static_cast<size_t>(sz * 1.2);
assert(vm <= vM);
assert(sz <= range);
vl ret;
auto engine = create_rand_engine();
std::uniform_int_distribution<ll> distribution(vm, vM);
while (ret.size() < sz) {
while (ret.size() < num)
ret.pb(distribution(engine));
sort(all(ret));
auto unique_end = unique(all(ret));
if (sz < distance(ret.begin(), unique_end))
unique_end = next(ret.begin(), sz);
ret.erase(unique_end, ret.end());
}
return ret;
}
vl generate_array(const size_t sz, ll vm, ll vM) {
const size_t range = static_cast<size_t>(vM - vm + 1);
assert(vm <= vM);
vl ret;
auto engine = create_rand_engine();
std::uniform_int_distribution<ll> distribution(vm, vM);
while (ret.size() < sz)
ret.pb(distribution(engine));
return ret;
}
template <typename T> void read_vector(ll n, vector<T> &v, ll offset = 0) {
v.resize(n);
rep(i, n) {
in1(v[i]);
if (offset)
v[i] += offset;
}
}
template <typename T>
void read_vector(ll n, vector<T> &v1, vector<T> &v2, ll offset1 = 0,
ll offset2 = 0) {
v1.resize(n);
v2.resize(n);
rep(i, n) {
in2(v1[i], v2[i]);
if (offset1)
v1[i] += offset1;
if (offset2)
v2[i] += offset2;
}
}
void read_points(ll n, points &ps, ll offset = 0) {
ps.resize(n);
rep(i, n) {
ll x, y;
in2(x, y);
ps[i] = {x, y};
ps[i] += offset;
}
}
void read_2DMap(ll w, ll h, vb2 &block, char b) {
block = vb2(w, vb(h, false));
string s;
rep(y, h) {
in1(s);
rep(x, w) block[x][y] = (s[x] == b);
}
}
ll diameter_of_tree(Graph &tree) {
ll dM = 0, vM = 0, v1, v2;
auto dfs = [&](auto dfs, ll src, ll par, ll d) -> void {
if (chmax(dM, d))
vM = src;
for (auto &e : tree[src]) {
if (e.to == par)
continue;
dfs(dfs, e.to, src, d + 1);
}
};
dfs(dfs, 0, -1, 0);
v1 = vM;
dfs(dfs, vM, -1, 0);
v2 = vM;
return dM;
}
void trit_search(ll n, function<void(ll, ll)> func) {
rep(bit, 1LL << n) {
ll sub = bit;
do {
func(bit, sub);
sub = (sub - 1) & bit;
} while (sub != bit);
}
}
ll convert_string_to_int(string s, ll n_below_decimal) {
// return double(s) * coef
ll ret = 0, comma = s.length(), n10 = 1,
coef = power_normal(10, n_below_decimal);
rep(i, s.length()) if (s[i] == '.') comma = i;
revrep(i, comma) {
ll num = s[i] - '0';
ret += n10 * num;
n10 *= 10;
}
ret *= coef;
n10 = coef / 10;
For(i, comma + 1, s.length()) {
ll num = s[i] - '0';
ret += n10 * num;
n10 /= 10;
}
return ret;
}
void iter_combination(ll n, ll k, function<void(ll)> func) {
/*
sub & -sub: the binary which shares the last digit whose value is 1 in sub
sub + x : carry up the last digit
~y : the binary whose digits are 1 if y's digit is 0.
(sub & ~y) / x: reduce the same number of 0s after first 1 in x from (sub &
~y).
*/
auto next_combination = [&](ll sub) -> ll {
ll x = sub & -sub, y = sub + x;
if (x != 0)
return (((sub & ~y) / x) >> 1) | y;
else
return INF;
};
ll M = 1LL << n;
for (ll bit = (1LL << k) - 1; bit < M; bit = next_combination(bit))
func(bit);
}
ll count_in_sorted_seq(vl &as, ll val) {
ll lb = lower_bound(all(as), val) - as.begin();
ll ub = upper_bound(all(as), val) - as.begin();
return ub - lb;
}
bool win_first_player(vl &grundy_nums) {
ll x = 0;
for (ll &gn : grundy_nums)
x ^= gn;
return x != 0;
}
ll create1001001(ll num, ll m, ll num_of_1, ll nb = 31) {
// e.g. 1001001001 -> num = 3
// e.g. 111111 -> num = 1 (REPUNIT)
// Calculate the modulo m of 100..100...100..1 (the length of each 00... is
// num - 1. The # of 1 is 2^i.) Then calculate the modulo m of
// 100...100...100...1 (The # of 1 is num_of_1 using the memo.)
vl memo(nb, 1);
ll v = 0, tot = 1, coef = power_mod(10, num, m);
rep(j, nb) {
ll c10 = power_mod(coef, 1LL << j, m);
memo[j + 1] = ((memo[j] * c10) % m + memo[j]) % m;
if (num_of_1 >> j & 1) {
(v += (memo[j] * tot) % m) %= m;
(tot *= power_mod(coef, 1LL << j, m)) %= m;
}
}
return v;
}
ll GaussJordanBitVector(vl &bs) {
ll n = bs.size();
ll rank = 0;
ll j = 0;
revrep(i, N_DIGITS) {
for (j = rank; j < n; j++)
if (bs[j] & (1LL << i))
break;
if (j == n)
continue;
if (j > rank)
bs[rank] ^= bs[j];
for (j = 0; j < n; j++)
if (j != rank)
bs[j] = min(bs[j], bs[j] ^ bs[rank]);
rank++;
}
return rank;
}
ll GaussJordan(vl2 &A, ll mod, bool is_extended = false, bool det = false) {
/*
Ax = b
Parameters
----------
A: m x n matrix
The matrix of interest
is_extended: bool
if A includes the term of b (e.g. when solving linear equation), true
otherwise false.
Property: The product of diagonal elements of upper triangle matrix is equal
to the determinant of this matrix.
*/
ll rank = 0, m = A.size(), n = A[0].size();
rep(r, m) rep(c, n) A[r][c] = modf(A[r][c], mod);
ll pivot, inv, ret = 1;
vl tmp;
if (det)
tmp = vl(n);
rep(c, n) {
if (is_extended && c == n - 1)
break;
pivot = -1;
For(r, rank, m) if (A[r][c] != 0) {
pivot = r;
break;
}
if (pivot == -1) {
if (det)
return 0;
continue;
}
swap(A[pivot], A[rank]);
ret = modf(ret * A[rank][c], mod), inv = modinv(A[rank][c], mod);
vl &ax = det ? tmp : A[rank];
rep(c2, n) ax[c2] = A[rank][c2] * inv % mod;
rep(r, m) if (r != rank && A[r][c]) {
ll base = A[r][c];
rep(c2, n) A[r][c2] = modf(A[r][c2] - ax[c2] * base, mod);
}
++rank;
}
return det ? ret : rank;
}
ll linear_equation(vl2 A, vl b, vl &res) {
ll m = A.size(), n = A[0].size();
vl2 M(m, vl(n + 1));
rep(r, m) {
rep(c, n) M[r][c] = A[r][c];
M[r][n] = b[r];
}
ll rank = GaussJordan(M, true);
For(r, rank, m) if (M[r][n]) return -1;
res.assign(n, 0);
rep(i, rank) res[i] = M[i][n];
return rank;
}
ll determinant(vl2 &A, ll mod) { return GaussJordan(A, mod, false, true); };
/*
#5. shakutori method (syakutori, two pointers technique)
// 1. strech right side while the condition is met.
// 2. renew the answer
// 3. increments left side
// 4. Back to 1. (l <= r must be satisfied all the time.)
ll l = 0, r = 0;
while (l < n){
if (l == r) r++;
while(r < n && cond) r++;
l++;
}
prl(answer);
#11. bfs ABC146D, ABC007C
1. first create a graph.
2. start searching from a node.
3. do some processes and push nodes connected with a given target node in
BFS.
4. repeat a series of procedure until queue is empty.
ll n; in1(n);
queue<tp3> q; vb visited(n, false);
auto bfs = [&](ll src, ll par){
visited[src] = true;
for (auto& e: graph[src]){
if (e.to != par && !visited[e.to]){
q.push(mt(e.to, src, ...));
}
}
};
q.push(mt(0, -1, 0));
while(!q.empty()){
ll src, par, ...; tie(src, par, ...) = q.front(); q.pop();
bfs(src, par, ...);
}
Grundy number (ARC038C)
void grundy(ll x, vl& gn){ // the example from the ari book
// the player can take a[0], a[1], ..., a[k - 1] coins from 1 mountain
set<ll> s;
rep(i, k) if (a[i] <= x) s.insert(gn[x - a[i]])
while (s.count(gn[x])) gn[x]++;
}
*/
/*
x: 1001 1010 1100 1011 1101 1111
x & ~ x: 0001 0010 0100 0001 0001 0001
sum: 1010 1100 10000 1100 1100 10000
####### Attention #######
S | (1 << i) -> S union {i}
S & ~(1 << i) -> S - {i}
# inclusion-exclusion principle
|U[i = 1 to n] Ai| = sum[i = 1 to n] |Ai| - sum[i < j]|Ai ^ Aj| + ... + (-1)^(n
- 1) |^[i = 1 to n]Ai|
*/
const ll MAX_N = 200005;
const size_t MAX_BIT = 160 * 160 + 10;
typedef bitset<MAX_BIT> bts;
typedef vector<bts> vbt;
typedef vector<vbt> vbt2;
typedef vector<vbt2> vbt3;
const bool multiple_queries = false;
void solve() {
/*
*** 注意 ***
・マイナスの整数の除算が0
(マイナスのときはCeil関数になる)になって，マイナスの判定ができていない．
・MODの逆元を取るときは素数か否かに注意．
・Queue, stack, deque等で必ず`empty`なら飛ばすようにする．
・set,
multisetで`RE`を起こすときは初期段階で解法に影響が出ないようなダミーをsetに入れておくとエラーを回避できる．
・掛け算のOverflow注意．(x * y > 10^18 -> x > 10^18 / y)
のような形で判定するとよい． ・総和を取る公式 (1+2+...+n = n * (n + 1) /
2)の計算時等で最終的には10^18に収まる場合は`/2`の順序を早める．
・Bit演算をするときに`a ^ b !=
c`のような式は代入演算子になったりするので注意． (ABC150F) ・aborted (core
dumped) のエラーが出ているときは変数の二重宣言やベクトルの区間外参照を確認．
・`tuple`のコンパイルエラーは`make_tuple(a, b, c, ...)`で回避．
・グラフの最短経路と木の最短経路は同じDFSでも更新方法に注意. (ABC148E)
・Running
Errorの１つとして，関数の返り値のタイプが定義されているのに何も返していないことが考えられる．
・Running
Errorとしてベクトルサイズが0であるにもかかわらずsortをしている場合がある．
・境界条件は必ず試す．
・Overflow不等式: (前提条件：a, b, c > 0)
1. a * b <= c -> a <= c / b
2. a * b < c -> a <= c / b && (c % b || a != c / b)
3. c <= a * b -> (c + b - 1) / b <= a
4. c < a * b -> (c + b - 1) / b <= a && (c % b || a != c / b)
*/
// generate_array(size, min, max);
ll n;
in1(n);
vl as;
read_vector(n, as);
multiset<ll> ms;
ms.insert(MOD);
ms.insert(-1);
ms.insert(as[0]);
For(i, 1, n) {
auto it = ms.lower_bound(as[i]);
--it;
if (it != ms.begin())
ms.erase(it);
ms.insert(as[i]);
}
prl(ms.size() - 2);
// ### DEBUG PART ###
auto naive_solver = [&]() {};
#ifdef _LOCAL
naive_solver();
#endif
}
void test(ll num = 0, bool verbose = false) {
rep(i, max(1LL, num)) {
ll t = clock();
if (verbose)
prl4("\n#####", i + 1, "#####", "\n## Answer ##");
solve();
if (verbose) {
prl("");
prl_time(t);
}
}
}
int main(void) {
ios::sync_with_stdio(false);
cin.tie(nullptr);
#ifdef _LOCAL
test(6, true);
#else
ll t = 0;
if (multiple_queries)
in1(t);
test(t, false);
#endif
return 0;
}
| replace | 2,695 | 2,696 | 2,695 | 2,696 | TLE | |
p02973 | C++ | Time Limit Exceeded | #include <bits/stdc++.h>
#define REP(i, n) for (int i = 0; i < n; i++)
#define REPR(i, n) for (int i = n; i >= 0; i--)
#define FOR(i, m, n) for (int i = m; i < n; i++)
#define INF 2e9
#define ALL(v) v.begin(), v.end()
using namespace std;
using ll = long long;
using pi = pair<int, int>;
constexpr ll mod = 1000000007;
void pPRINTl(ostream &ost) { ost << endl; }
template <class T> void pPRINTL(ostream &ost, T t) { ost << t << endl; }
template <class T, class... U> void pPRINTl(ostream &ost, T t, U... u) {
ost << t << " ";
pPRINTl(ost, u...);
}
template <class... T> void PRINTl(T... t) { pPRINTl(cout, t...); }
// #define PRINTl //
void pPRINT(ostream &ost) {}
template <class T> void pPRINT(ostream &ost, T t) { ost << t; }
template <class T, class... U> void pPRINT(ostream &ost, T t, U... u) {
ost << t << " ";
pPRINT(ost, u...);
}
template <class... T> void PRINT(T... t) { pPRINT(cout, t...); }
#define DEBUG PRINTl("DEBUG line:", __LINE__)
// #define DEBUG
int main() {
ll n;
cin >> n;
ll a[n];
REP(i, n) cin >> a[i];
vector<int> l;
l.push_back(a[0]);
ll min = a[0];
FOR(i, 1, n) {
if (min >= a[i]) {
l.push_back(a[i]);
min = a[i];
}
REP(j, l.size()) {
if (l[j] < a[i]) {
l[j] = a[i];
if (j == l.size() - 1) {
min = a[i];
}
break;
}
}
}
PRINT(l.size());
return 0;
} | #include <bits/stdc++.h>
#define REP(i, n) for (int i = 0; i < n; i++)
#define REPR(i, n) for (int i = n; i >= 0; i--)
#define FOR(i, m, n) for (int i = m; i < n; i++)
#define INF 2e9
#define ALL(v) v.begin(), v.end()
using namespace std;
using ll = long long;
using pi = pair<int, int>;
constexpr ll mod = 1000000007;
void pPRINTl(ostream &ost) { ost << endl; }
template <class T> void pPRINTL(ostream &ost, T t) { ost << t << endl; }
template <class T, class... U> void pPRINTl(ostream &ost, T t, U... u) {
ost << t << " ";
pPRINTl(ost, u...);
}
template <class... T> void PRINTl(T... t) { pPRINTl(cout, t...); }
// #define PRINTl //
void pPRINT(ostream &ost) {}
template <class T> void pPRINT(ostream &ost, T t) { ost << t; }
template <class T, class... U> void pPRINT(ostream &ost, T t, U... u) {
ost << t << " ";
pPRINT(ost, u...);
}
template <class... T> void PRINT(T... t) { pPRINT(cout, t...); }
#define DEBUG PRINTl("DEBUG line:", __LINE__)
// #define DEBUG
int main() {
ll n;
cin >> n;
ll a[n];
REP(i, n) cin >> a[i];
vector<int> l;
l.push_back(a[0]);
ll min = a[0];
FOR(i, 1, n) {
if (min >= a[i]) {
l.push_back(a[i]);
min = a[i];
continue;
}
REP(j, l.size()) {
if (l[j] < a[i]) {
l[j] = a[i];
if (j == l.size() - 1) {
min = a[i];
}
break;
}
}
}
PRINT(l.size());
return 0;
} | insert | 43 | 43 | 43 | 44 | TLE | |
p02973 | C++ | Runtime Error | #include <algorithm>
#include <iostream>
#include <vector>
namespace multiset {
class multiset {
private:
std::vector<int> tree;
int MSB;
void add(int i, int x) {
for (; i < tree.size(); i += i & -i) {
tree[i] += x;
}
}
int sum(int i) {
int res = 0;
for (; i > 0; i -= i & -i) {
res += tree[i];
}
return res;
}
int bisect(int w) {
int i = 0;
for (int k = MSB; k > 0; k /= 2) {
if (i + k < tree.size() && tree[i + k] < w) {
w -= tree[i + k];
i += k;
}
}
return i + 1;
}
int get_MSB(int N) {
int i = 1;
while (i < N) {
i *= 2;
}
return i / 2;
}
public:
multiset(int N) : tree(N + 1), MSB(get_MSB(N)) {}
void insert(int x) { add(x, 1); }
void erase(int x) { add(x, -1); }
int lower_bound(int x) {
int s = sum(x);
return (s == 0) ? 0 : bisect(s);
}
size_t size() { return sum(tree.size() - 1); }
};
} // namespace multiset
int main() {
int N;
std::cin >> N;
std::vector<int> A(N);
for (auto &&a : A) {
std::cin >> a;
}
std::vector<int> B = A;
std::sort(begin(B), end(B));
B.erase(std::unique(begin(B), end(B)), end(B));
auto f = [&](int val) -> int {
return std::lower_bound(begin(A), end(A), val) - begin(A) + 1;
};
multiset::multiset ms(B.size());
for (auto a : A) {
auto i = ms.lower_bound(f(a) - 1);
if (i != 0) {
ms.erase(i);
}
ms.insert(f(a));
}
std::cout << ms.size() << '\n';
}
| #include <algorithm>
#include <iostream>
#include <vector>
namespace multiset {
class multiset {
private:
std::vector<int> tree;
int MSB;
void add(int i, int x) {
for (; i < tree.size(); i += i & -i) {
tree[i] += x;
}
}
int sum(int i) {
int res = 0;
for (; i > 0; i -= i & -i) {
res += tree[i];
}
return res;
}
int bisect(int w) {
int i = 0;
for (int k = MSB; k > 0; k /= 2) {
if (i + k < tree.size() && tree[i + k] < w) {
w -= tree[i + k];
i += k;
}
}
return i + 1;
}
int get_MSB(int N) {
int i = 1;
while (i < N) {
i *= 2;
}
return i / 2;
}
public:
multiset(int N) : tree(N + 1), MSB(get_MSB(N)) {}
void insert(int x) { add(x, 1); }
void erase(int x) { add(x, -1); }
int lower_bound(int x) {
int s = sum(x);
return (s == 0) ? 0 : bisect(s);
}
size_t size() { return sum(tree.size() - 1); }
};
} // namespace multiset
int main() {
int N;
std::cin >> N;
std::vector<int> A(N);
for (auto &&a : A) {
std::cin >> a;
}
std::vector<int> B = A;
std::sort(begin(B), end(B));
B.erase(std::unique(begin(B), end(B)), end(B));
auto f = [&](int val) -> int {
return std::lower_bound(begin(B), end(B), val) - begin(B) + 1;
};
multiset::multiset ms(B.size());
for (auto a : A) {
auto i = ms.lower_bound(f(a) - 1);
if (i != 0) {
ms.erase(i);
}
ms.insert(f(a));
}
std::cout << ms.size() << '\n';
}
| replace | 73 | 74 | 73 | 74 | 0 | |
p02973 | C++ | Time Limit Exceeded | #include <bits/stdc++.h>
using namespace std;
int main() {
int n;
cin >> n;
vector<int> rights(1, -1);
for (int i = 0; i < n; i++) {
int a;
cin >> a;
if (a <= rights[rights.size() - 1]) {
rights.push_back(a);
continue;
}
for (int j = 0; j < (int)rights.size(); j++) {
if (rights[j] < a) {
rights[j] = a;
sort(rights.begin(), rights.end(), greater<int>());
break;
}
}
}
cout << rights.size() << endl;
} | #include <bits/stdc++.h>
using namespace std;
int main() {
int n;
cin >> n;
vector<int> rights(1, -1);
for (int i = 0; i < n; i++) {
int a;
cin >> a;
if (a <= rights[rights.size() - 1]) {
rights.push_back(a);
continue;
}
for (int j = 0; j < (int)rights.size(); j++) {
if (rights[j] < a) {
rights[j] = a;
break;
}
}
}
cout << rights.size() << endl;
} | delete | 20 | 21 | 20 | 20 | TLE | |
p02973 | C++ | Runtime Error | #include <algorithm>
#include <cmath>
#include <iostream>
#include <map>
#include <numeric>
#include <string>
#include <vector>
using namespace std;
typedef long long ll;
int main() {
int n;
cin >> n;
vector<ll> v;
int ans = 200000;
for (int i = 0; i < n; i++) {
ll a;
cin >> a;
auto j = upper_bound(v.begin(), v.end(), a, greater<int>());
if (j == v.end())
v.push_back(a);
else
v[j - v.begin() - 1] = a;
}
cout << v.size();
} | #include <algorithm>
#include <cmath>
#include <iostream>
#include <map>
#include <numeric>
#include <string>
#include <vector>
using namespace std;
typedef long long ll;
int main() {
int n;
cin >> n;
vector<ll> v;
int ans = 200000;
for (int i = 0; i < n; i++) {
ll a;
cin >> a;
auto j = upper_bound(v.begin(), v.end(), a, greater<int>());
if (j == v.end())
v.push_back(a);
else
*j = a;
}
cout << v.size();
} | replace | 22 | 23 | 22 | 23 | -6 | munmap_chunk(): invalid pointer
|
p02973 | C++ | Time Limit Exceeded | #include <bits/stdc++.h>
using namespace std;
typedef long long ll;
const ll INF = 1e9;
int main() {
ll N;
cin >> N;
vector<ll> A(N);
multiset<int> T;
int cnt = 1;
for (int i = 0; i < N; i++) {
cin >> A[i];
}
T.insert(A[0]);
T.insert(INF);
for (int i = 1; i < N; i++) {
if (*T.begin() >= A[i])
T.insert(A[i]);
else {
auto past = T.begin();
for (auto it = T.begin(); it != T.end(); it++) {
// cout << i << " " << *it << endl;
if (*it >= A[i]) {
T.erase(past);
T.insert(A[i]);
break;
}
past = it;
}
}
/*cout << i << " ";
for(auto it1 = T.begin(); it1 != (T.end()++); it1++) cout << " " << (*it1);
cout << endl;*/
}
cout << T.size() - 1 << endl;
} | #include <bits/stdc++.h>
using namespace std;
typedef long long ll;
const ll INF = 1e9;
int main() {
ll N;
cin >> N;
vector<ll> A(N);
multiset<int> T;
int cnt = 1;
for (int i = 0; i < N; i++) {
cin >> A[i];
}
T.insert(A[0]);
T.insert(INF);
for (int i = 1; i < N; i++) {
if (*T.begin() >= A[i])
T.insert(A[i]);
else {
auto past = T.begin();
auto it = T.lower_bound(A[i]);
it--;
T.erase(it);
T.insert(A[i]);
/*for(auto it = T.begin(); it != T.end(); it++){
//cout << i << " " << *it << endl;
if(*it >= A[i]){
T.erase(past);
T.insert(A[i]);
break;
}
past = it;
}*/
}
/*cout << i << " ";
for(auto it1 = T.begin(); it1 != (T.end()++); it1++) cout << " " << (*it1);
cout << endl;*/
}
cout << T.size() - 1 << endl;
} | replace | 21 | 30 | 21 | 34 | TLE | |
p02973 | C++ | Time Limit Exceeded | #include <algorithm>
#include <iostream>
#include <math.h>
#include <vector>
using namespace std;
#define mmum 1e9
using vint = vector<int>;
using vvint = vector<vector<int>>;
int main(int argc, char *argv[]) {
int n;
cin >> n;
vint a;
for (int i = 0; i < n; i++) {
int t;
cin >> t;
t = mmum - t;
auto it = upper_bound(a.begin(), a.end(), t);
if (it != a.end()) {
*it = t;
sort(a.begin(), a.end());
} else
a.push_back(t);
}
cout << a.size() << endl;
}
| #include <algorithm>
#include <iostream>
#include <math.h>
#include <vector>
using namespace std;
#define mmum 1e9
using vint = vector<int>;
using vvint = vector<vector<int>>;
int main(int argc, char *argv[]) {
int n;
cin >> n;
vint a;
for (int i = 0; i < n; i++) {
int t;
cin >> t;
t = mmum - t;
auto it = upper_bound(a.begin(), a.end(), t);
if (it != a.end()) {
*it = t;
} else
a.push_back(t);
}
cout << a.size() << endl;
}
| delete | 22 | 23 | 22 | 22 | TLE | |
p02973 | C++ | Runtime Error | // ~/Remember,remember the 6th of March
#include <bits/stdc++.h>
typedef long long ll;
typedef unsigned long long ull;
const double PI = acos(-1.0);
const double EPS = 1e-9;
const ll MOD = 1e9 + 7;
using namespace std;
int main() {
int n;
cin >> n;
vector<int> arr(n);
for (int i = 0; i < n; i++) {
cin >> arr[i];
arr[i] *= -1;
}
vector<int> lcs;
for (int i = 0; i < n; i++) {
int ind = upper_bound(lcs.begin(), lcs.end(), arr[i]) - lcs.begin();
if (ind == lcs.size())
lcs.push_back(arr[i]);
else
lcs[ind] = arr[arr[i]];
}
cout << lcs.size() << endl;
return 0;
}
| // ~/Remember,remember the 6th of March
#include <bits/stdc++.h>
typedef long long ll;
typedef unsigned long long ull;
const double PI = acos(-1.0);
const double EPS = 1e-9;
const ll MOD = 1e9 + 7;
using namespace std;
int main() {
int n;
cin >> n;
vector<int> arr(n);
for (int i = 0; i < n; i++) {
cin >> arr[i];
arr[i] *= -1;
}
vector<int> lcs;
for (int i = 0; i < n; i++) {
int ind = upper_bound(lcs.begin(), lcs.end(), arr[i]) - lcs.begin();
if (ind == lcs.size())
lcs.push_back(arr[i]);
else
lcs[ind] = arr[i];
}
cout << lcs.size() << endl;
return 0;
} | replace | 23 | 24 | 23 | 24 | 0 | |
p02973 | C++ | Runtime Error | #include <bits/stdc++.h>
using namespace std;
typedef long long ll;
ll N;
ll A[100001];
deque<ll> v;
int main() {
cin >> N;
for (int i = 0; i < N; i++)
cin >> A[i];
v.push_back(A[0]);
for (int i = 1; i < N; i++) {
auto itr = lower_bound(v.begin(), v.end(), A[i]);
if (itr == v.begin())
v.push_front(A[i]);
*(itr - 1) = A[i];
}
cout << v.size() << endl;
return 0;
} | #include <bits/stdc++.h>
using namespace std;
typedef long long ll;
ll N;
ll A[100001];
deque<ll> v;
int main() {
cin >> N;
for (int i = 0; i < N; i++)
cin >> A[i];
v.push_back(A[0]);
for (int i = 1; i < N; i++) {
auto itr = lower_bound(v.begin(), v.end(), A[i]);
if (itr == v.begin())
v.push_front(A[i]);
else
*(itr - 1) = A[i];
}
cout << v.size() << endl;
return 0;
} | replace | 18 | 19 | 18 | 20 | 0 | |
p02973 | C++ | Runtime Error | #include <bits/stdc++.h>
using namespace std;
using ll = long long;
using vi = vector<int>;
using vll = vector<ll>;
using vvi = vector<vector<int>>;
using vvl = vector<vector<ll>>;
template <typename T> class tRMQ {
vector<T> data;
T unit;
public:
static const long long INF = 100000000000;
int n;
function<T(const T &, const T &)> f;
tRMQ(int _, T u, function<T(T, T)> bi) {
unit = u;
f = bi;
n = 1;
while (n < _) {
n <<= 1;
}
data.resize(n * 4);
for (int i = 0; i < n * 4; i++)
data[i] = unit;
}
void update(int index, T val) {
int i = index + n - 1;
data[i] = val;
while (i > 0) {
i = (i - 1) / 2;
data[i] = f(data[i * 2 + 1], data[i * 2 + 2]);
}
}
// [a, b)
T query(int a, int b, int k, int l, int r) {
if (a < 0 || r <= a || b <= l)
return unit;
if (a <= l && r <= b)
return data[k];
else
return f(query(a, b, k * 2 + 1, l, (l + r) / 2),
query(a, b, k * 2 + 2, (r + l) / 2, r));
}
T query(int a, int b) { return query(a, b, 0, 0, n); }
};
tRMQ<ll> minrmq(int n) {
return tRMQ<ll>(n, 10000000000000000LL, [](ll r, ll l) { return min(l, r); });
}
tRMQ<ll> maxrmq(int n) {
return tRMQ<ll>(n, -10000000000000000LL,
[](ll r, ll l) { return max(l, r); });
}
tRMQ<ll> sumrmq(int n) {
return tRMQ<ll>(n, 0, [](ll l, ll r) { return l + r; });
}
int main() {
cin.tie(nullptr);
ios::sync_with_stdio(false);
int n;
cin >> n;
vector<ll> a(n);
map<ll, int> mp;
for (int i = 0; i < n; i++) {
cin >> a[i];
mp[a[i]] = 0;
}
int c = 1;
for (auto &v : mp) {
v.second = c++;
}
auto r = maxrmq(n + 3);
r.update(0, 0);
ll ans = 0;
for (int i = n - 1; i >= 0; i--) {
ll b = r.query(0, mp[a[i]]) + 1;
r.update(a[i], b);
ans = max(ans, b);
}
cout << ans << endl;
return 0;
}
| #include <bits/stdc++.h>
using namespace std;
using ll = long long;
using vi = vector<int>;
using vll = vector<ll>;
using vvi = vector<vector<int>>;
using vvl = vector<vector<ll>>;
template <typename T> class tRMQ {
vector<T> data;
T unit;
public:
static const long long INF = 100000000000;
int n;
function<T(const T &, const T &)> f;
tRMQ(int _, T u, function<T(T, T)> bi) {
unit = u;
f = bi;
n = 1;
while (n < _) {
n <<= 1;
}
data.resize(n * 4);
for (int i = 0; i < n * 4; i++)
data[i] = unit;
}
void update(int index, T val) {
int i = index + n - 1;
data[i] = val;
while (i > 0) {
i = (i - 1) / 2;
data[i] = f(data[i * 2 + 1], data[i * 2 + 2]);
}
}
// [a, b)
T query(int a, int b, int k, int l, int r) {
if (a < 0 || r <= a || b <= l)
return unit;
if (a <= l && r <= b)
return data[k];
else
return f(query(a, b, k * 2 + 1, l, (l + r) / 2),
query(a, b, k * 2 + 2, (r + l) / 2, r));
}
T query(int a, int b) { return query(a, b, 0, 0, n); }
};
tRMQ<ll> minrmq(int n) {
return tRMQ<ll>(n, 10000000000000000LL, [](ll r, ll l) { return min(l, r); });
}
tRMQ<ll> maxrmq(int n) {
return tRMQ<ll>(n, -10000000000000000LL,
[](ll r, ll l) { return max(l, r); });
}
tRMQ<ll> sumrmq(int n) {
return tRMQ<ll>(n, 0, [](ll l, ll r) { return l + r; });
}
int main() {
cin.tie(nullptr);
ios::sync_with_stdio(false);
int n;
cin >> n;
vector<ll> a(n);
map<ll, int> mp;
for (int i = 0; i < n; i++) {
cin >> a[i];
mp[a[i]] = 0;
}
int c = 1;
for (auto &v : mp) {
v.second = c++;
}
auto r = maxrmq(n + 3);
r.update(0, 0);
ll ans = 0;
for (int i = n - 1; i >= 0; i--) {
ll b = r.query(0, mp[a[i]]) + 1;
r.update(mp[a[i]] - 1, b);
ans = max(ans, b);
}
cout << ans << endl;
return 0;
}
| replace | 87 | 88 | 87 | 88 | 0 | |
p02973 | C++ | Runtime Error | #include <algorithm>
#include <cassert>
#include <cmath>
#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <functional>
#include <iostream>
#include <map>
#include <numeric>
#include <queue>
#include <set>
#include <string>
#include <unordered_map>
#include <unordered_set>
#include <vector>
using namespace std;
typedef long long ll;
typedef pair<ll, ll> P;
typedef pair<ll, ll> PL;
const ll mod = 1000000007;
const ll MOD = 1000000007;
const ll INF = 1LL << 60;
#define PI (acos(-1))
#define ALL(c) (c).begin(), (c).end()
ll lcm(ll a, ll b) { return a / __gcd(a, b) * b; }
bool is_prime(ll x) {
if (x == 1) {
return false;
}
for (ll i = 2; i * i <= x; i++) {
if (x % i == 0)
return false;
}
return true;
}
vector<ll> divisor(ll n) {
vector<ll> ret;
for (ll i = 1; i * i <= n; i++) {
if (n % i == 0) {
ret.push_back(i);
if (i * i != n)
ret.push_back(n / i);
}
}
sort(begin(ret), end(ret));
return (ret);
}
long long modpow(long long a, long long n, long long mod) {
long long res = 1;
while (n > 0) {
if (n & 1)
res = res * a % mod;
a = a * a % mod;
n >>= 1;
}
return res;
}
// a^{-1} mod を計算する
long long modinv(long long a, long long mod) { return modpow(a, mod - 2, mod); }
const ll MAX = 5100000;
ll fac[MAX], finv[MAX], inv[MAX];
// テーブルを作る前処理
void COMinit() {
fac[0] = fac[1] = 1;
finv[0] = finv[1] = 1;
inv[1] = 1;
for (ll i = 2; i < MAX; i++) {
fac[i] = fac[i - 1] * i % MOD;
inv[i] = MOD - inv[MOD % i] * (MOD / i) % MOD;
finv[i] = finv[i - 1] * inv[i] % MOD;
}
}
// 二項係数計算
ll COM(ll n, ll k) {
if (n < k)
return 0;
if (n < 0 || k < 0)
return 0;
return fac[n] * (finv[k] * finv[n - k] % MOD) % MOD;
}
struct UnionFind {
vector<int> par;
UnionFind(int n) : par(n, -1) {}
void init(int n) { par.assign(n, -1); }
int root(int x) {
if (par[x] < 0)
return x;
else
return par[x] = root(par[x]);
}
bool issame(int x, int y) { return root(x) == root(y); }
bool merge(int x, int y) {
x = root(x);
y = root(y);
if (x == y)
return false;
if (par[x] > par[y])
swap(x, y); // merge technique
par[x] += par[y];
par[y] = x;
return true;
}
int size(int x) { return -par[root(x)]; }
};
struct BIT {
int n;
vector<int> bit;
BIT() { init(); }
BIT(int n) : n(n) { init(); }
void init() {
bit.clear();
bit.resize(n + 1, 0);
}
int sum(int i) {
int s = 0;
while (i > 0) {
s += bit[i];
i -= i & -i;
}
return s;
}
int sum(int x, int y) { return sum(y) - sum(x - 1); }
void add(int i, int x) {
while (i <= n) {
bit[i] += x;
i += i & -i;
}
}
int lower_bound(int w) {
if (w <= 0)
return 0;
int x = 0, r = 1;
while (r < n)
r <<= 1;
for (int k = r; k > 0; k >>= 1) {
if (x + k <= n && bit[x + k] < w) {
w -= bit[x + k];
x += k;
}
}
return x + 1;
}
};
// 文字列t ->整数 atoi(t.c_str());
// 文字列t ->long long整数 stoll(t); ローカルではつかえない
struct LazySegmentTree {
// private:
ll n;
vector<ll> node, lazy;
// public:
LazySegmentTree(vector<ll> v) {
int sz = (int)v.size();
n = 1;
while (n < sz)
n *= 2;
node.resize(2 * n - 1);
lazy.resize(2 * n - 1, 0);
for (int i = 0; i < sz; i++)
node[i + n - 1] = v[i];
for (int i = n - 2; i >= 0; i--)
node[i] = node[i * 2 + 1] + node[i * 2 + 2];
}
void eval(int k, int l, int r) {
if (lazy[k] != 0) {
node[k] += lazy[k];
if (r - l > 1) {
lazy[2 * k + 1] += lazy[k] / 2;
lazy[2 * k + 2] += lazy[k] / 2;
}
lazy[k] = 0;
}
}
void add(int a, int b, ll x, int k = 0, int l = 0, int r = -1) {
if (r < 0)
r = n;
eval(k, l, r);
if (b <= l || r <= a)
return;
if (a <= l && r <= b) {
lazy[k] += (r - l) * x;
eval(k, l, r);
} else {
add(a, b, x, 2 * k + 1, l, (l + r) / 2);
add(a, b, x, 2 * k + 2, (l + r) / 2, r);
node[k] = node[2 * k + 1] + node[2 * k + 2];
}
}
ll getsum(int a, int b, int k = 0, int l = 0, int r = -1) {
if (r < 0)
r = n;
eval(k, l, r);
if (b <= l || r <= a)
return 0;
if (a <= l && r <= b)
return node[k];
ll vl = getsum(a, b, 2 * k + 1, l, (l + r) / 2);
ll vr = getsum(a, b, 2 * k + 2, (l + r) / 2, r);
return vl + vr;
}
};
ll digit_sum(ll v) {
ll ret = 0;
while (v) {
ret += (v % 10);
v /= 10;
}
return ret;
}
template <typename T> struct Kruskal {
struct edge {
ll from, to;
T cost;
ll used;
edge() {}
edge(ll from, ll to, T cost) : from(from), to(to), cost(cost), used(0) {}
bool operator<(const edge &e) const { return cost < e.cost; }
};
ll n;
vector<ll> p, r;
vector<edge> edges;
Kruskal() {}
Kruskal(ll n) : n(n) {}
void init(ll n) {
r.assign(n, 1);
p.resize(n);
iota(p.begin(), p.end(), 0);
}
ll find(ll x) { return (x == p[x] ? x : p[x] = find(p[x])); }
bool same(ll x, ll y) { return find(x) == find(y); }
void unite(ll x, ll y) {
x = find(x);
y = find(y);
if (x == y)
return;
if (r[x] < r[y])
swap(x, y);
r[x] += r[y];
p[y] = x;
}
void add_edge(ll u, ll v, T c) { edges.emplace_back(u, v, c); }
T build() {
sort(edges.begin(), edges.end());
init(n);
T res = 0;
for (auto &e : edges) {
if (!same(e.from, e.to)) {
res += e.cost;
unite(e.from, e.to);
e.used = 1;
}
}
return res;
}
};
int LIS(int a[], int n) {
vector<int> A(n, 0x3f3f3f3f);
for (int i = 0; i < n; i++)
*lower_bound(A.begin(), A.end(), a[i]) = a[i];
return find(A.begin(), A.end(), 0x3f3f3f3f) - A.begin();
}
// string maze[1010];
// ll maze[100][100];
// ll bfs(ll H, ll W, ll sx, ll sy, ll gx, ll gy)
// {
// int dx[4] = {1, 0, -1, 0};
// int dy[4] = {0, 1, 0, -1};
// vector<vector<ll>> dist(H, vector<ll>(W, -1));
// dist[sy][sx] = 0;
// queue<PL> q;
// q.push({sy, sx});
// while (!q.empty())
// {
// ll x, y;
// tie(y, x) = q.front();
// q.pop();
// if (y == gy && x == gx)
// {
// break;
// }
// for (int t = 0; t < 4; t++)
// {
// ll nx = x + dx[t], ny = y + dy[t];
// if (nx < 0 || ny < 0 || nx >= W || ny >= H || dist[ny][nx] != -1
// || maze[ny][nx] == '#')
// {
// continue;
// }
// dist[ny][nx] = dist[y][x] + 1;
// q.push({ny, nx});
// }
// }
// return dist[gy][gx];
// }
vector<vector<ll>> warshall_floyd(ll n, vector<vector<ll>> g, ll INF) {
// init vector<vector<ll>> c(10,vector<ll>(10,0));
for (int k = 0; k < n; k++) {
for (int i = 0; i < n; i++) {
for (int j = 0; j < n; j++) {
if (g[i][k] == INF || g[k][j] == INF)
continue;
g[i][j] = min(g[i][j], g[i][k] + g[k][j]);
}
}
}
return g;
}
struct Dijkstra {
ll n;
vector<vector<pair<ll, ll>>> Edges;
vector<ll> Dist;
vector<ll> Prev;
vector<ll> PathNum;
Dijkstra(ll n) : n(n), Edges(n), Dist(n), Prev(n), PathNum(n) {
Prev.assign(n, -1);
};
void add_edge(ll a, ll b, ll c, bool directed = true) {
if (directed) {
Edges[a].emplace_back(make_pair(b, c));
} else {
Edges[a].emplace_back(make_pair(b, c));
Edges[b].emplace_back(make_pair(a, c));
}
}
// O((E+V)logV)
void build(int start) {
priority_queue<P, vector<P>, greater<P>> queue;
fill(Dist.begin(), Dist.end(), 1e+18); // 1e18 !?!?
Dist[start] = 0;
PathNum[start] = 1;
queue.push(PL(0, start));
while (!queue.empty()) {
PL p = queue.top();
queue.pop();
int v = p.second;
if (Dist[v] < p.first)
continue;
for (int i = 0; i < Edges[v].size(); i++) {
PL e = Edges[v][i];
if (Dist[e.first] > Dist[v] + e.second) {
Dist[e.first] = Dist[v] + e.second;
queue.push(P(Dist[e.first], e.first));
Prev[e.first] = v;
PathNum[e.first] = PathNum[v];
} else if (Dist[e.first] == Dist[v] + e.second) {
PathNum[e.first] += PathNum[v];
PathNum[e.first] %= MOD;
}
}
}
}
ll dist(ll t) { return Dist[t]; }
vector<ll> get_path(ll t) {
vector<ll> path;
for (; t != -1; t = Prev[t]) {
path.push_back(t);
}
reverse(path.begin(), path.end());
return path;
}
ll get_path_num(ll t) { return PathNum[t]; }
// int solve()
// {
// ll v, e, r;
// cin >> v >> e >> r;
// Dijkstra dij(v);
// for (int i = 0; i < e; i++)
// {
// ll a, b, c;
// cin >> a >> b >> c;
// dij.add_edge(a, b, c);
// }
// dij.build(r);
// for (int i = 0; i < v; i++)
// {
// if (dij.dist(i) == 1e18)
// {
// cout << "INF" << endl;
// }
// else
// {
// cout << dij.dist(i) << endl;
// cout << dij.get_path(i) << endl;
// cout << dij.get_path_num(i) << endl;
// }
// }
// return 0;
// }
};
/*------------------------------*/
template <typename T> istream &operator>>(istream &is, vector<T> &vec) {
for (auto &v : vec)
is >> v;
return is;
}
template <typename T> ostream &operator<<(ostream &os, const vector<T> &vec) {
os << "[";
for (auto v : vec)
os << v << ",";
os << "]";
return os;
}
template <typename T> ostream &operator<<(ostream &os, const deque<T> &vec) {
os << "deq[";
for (auto v : vec)
os << v << ",";
os << "]";
return os;
}
template <typename T> ostream &operator<<(ostream &os, const set<T> &vec) {
os << "{";
for (auto v : vec)
os << v << ",";
os << "}";
return os;
}
template <typename T>
ostream &operator<<(ostream &os, const unordered_set<T> &vec) {
os << "{";
for (auto v : vec)
os << v << ",";
os << "}";
return os;
}
template <typename T> ostream &operator<<(ostream &os, const multiset<T> &vec) {
os << "{";
for (auto v : vec)
os << v << ",";
os << "}";
return os;
}
template <typename T>
ostream &operator<<(ostream &os, const unordered_multiset<T> &vec) {
os << "{";
for (auto v : vec)
os << v << ",";
os << "}";
return os;
}
template <typename T1, typename T2>
ostream &operator<<(ostream &os, const pair<T1, T2> &pa) {
os << "(" << pa.first << "," << pa.second << ")";
return os;
}
template <typename TK, typename TV>
ostream &operator<<(ostream &os, const map<TK, TV> &mp) {
os << "{";
for (auto v : mp)
os << v.first << "=>" << v.second << ",";
os << "}";
return os;
}
template <typename TK, typename TV>
ostream &operator<<(ostream &os, const unordered_map<TK, TV> &mp) {
os << "{";
for (auto v : mp)
os << v.first << "=>" << v.second << ",";
os << "}";
return os;
};
#define dbg(x) \
cerr << #x << " = " << (x) << " (L" << __LINE__ << ") " << __FILE__ << endl;
template <typename A, size_t N, typename T>
void Fill(A (&array)[N], const T &val) {
fill((T *)array, (T *)(array + N), val);
}
ll a[101010];
ll solve() {
ll n;
cin >> n;
for (int i = 0; i < n; i++) {
cin >> a[i];
}
deque<ll> d;
d.push_back(a[0]);
for (int i = 1; i < n; i++) {
if (d[0] >= a[i]) {
d.push_front(a[i]);
} else {
auto it = lower_bound(d.begin(), d.end(), a[i]);
d[(*it) - 1] = a[i];
}
}
cout << d.size() << endl;
return 0;
}
int main() {
// cout.precision(10);
ios::sync_with_stdio(false);
cin.tie(0);
solve();
}
| #include <algorithm>
#include <cassert>
#include <cmath>
#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <functional>
#include <iostream>
#include <map>
#include <numeric>
#include <queue>
#include <set>
#include <string>
#include <unordered_map>
#include <unordered_set>
#include <vector>
using namespace std;
typedef long long ll;
typedef pair<ll, ll> P;
typedef pair<ll, ll> PL;
const ll mod = 1000000007;
const ll MOD = 1000000007;
const ll INF = 1LL << 60;
#define PI (acos(-1))
#define ALL(c) (c).begin(), (c).end()
ll lcm(ll a, ll b) { return a / __gcd(a, b) * b; }
bool is_prime(ll x) {
if (x == 1) {
return false;
}
for (ll i = 2; i * i <= x; i++) {
if (x % i == 0)
return false;
}
return true;
}
vector<ll> divisor(ll n) {
vector<ll> ret;
for (ll i = 1; i * i <= n; i++) {
if (n % i == 0) {
ret.push_back(i);
if (i * i != n)
ret.push_back(n / i);
}
}
sort(begin(ret), end(ret));
return (ret);
}
long long modpow(long long a, long long n, long long mod) {
long long res = 1;
while (n > 0) {
if (n & 1)
res = res * a % mod;
a = a * a % mod;
n >>= 1;
}
return res;
}
// a^{-1} mod を計算する
long long modinv(long long a, long long mod) { return modpow(a, mod - 2, mod); }
const ll MAX = 5100000;
ll fac[MAX], finv[MAX], inv[MAX];
// テーブルを作る前処理
void COMinit() {
fac[0] = fac[1] = 1;
finv[0] = finv[1] = 1;
inv[1] = 1;
for (ll i = 2; i < MAX; i++) {
fac[i] = fac[i - 1] * i % MOD;
inv[i] = MOD - inv[MOD % i] * (MOD / i) % MOD;
finv[i] = finv[i - 1] * inv[i] % MOD;
}
}
// 二項係数計算
ll COM(ll n, ll k) {
if (n < k)
return 0;
if (n < 0 || k < 0)
return 0;
return fac[n] * (finv[k] * finv[n - k] % MOD) % MOD;
}
struct UnionFind {
vector<int> par;
UnionFind(int n) : par(n, -1) {}
void init(int n) { par.assign(n, -1); }
int root(int x) {
if (par[x] < 0)
return x;
else
return par[x] = root(par[x]);
}
bool issame(int x, int y) { return root(x) == root(y); }
bool merge(int x, int y) {
x = root(x);
y = root(y);
if (x == y)
return false;
if (par[x] > par[y])
swap(x, y); // merge technique
par[x] += par[y];
par[y] = x;
return true;
}
int size(int x) { return -par[root(x)]; }
};
struct BIT {
int n;
vector<int> bit;
BIT() { init(); }
BIT(int n) : n(n) { init(); }
void init() {
bit.clear();
bit.resize(n + 1, 0);
}
int sum(int i) {
int s = 0;
while (i > 0) {
s += bit[i];
i -= i & -i;
}
return s;
}
int sum(int x, int y) { return sum(y) - sum(x - 1); }
void add(int i, int x) {
while (i <= n) {
bit[i] += x;
i += i & -i;
}
}
int lower_bound(int w) {
if (w <= 0)
return 0;
int x = 0, r = 1;
while (r < n)
r <<= 1;
for (int k = r; k > 0; k >>= 1) {
if (x + k <= n && bit[x + k] < w) {
w -= bit[x + k];
x += k;
}
}
return x + 1;
}
};
// 文字列t ->整数 atoi(t.c_str());
// 文字列t ->long long整数 stoll(t); ローカルではつかえない
struct LazySegmentTree {
// private:
ll n;
vector<ll> node, lazy;
// public:
LazySegmentTree(vector<ll> v) {
int sz = (int)v.size();
n = 1;
while (n < sz)
n *= 2;
node.resize(2 * n - 1);
lazy.resize(2 * n - 1, 0);
for (int i = 0; i < sz; i++)
node[i + n - 1] = v[i];
for (int i = n - 2; i >= 0; i--)
node[i] = node[i * 2 + 1] + node[i * 2 + 2];
}
void eval(int k, int l, int r) {
if (lazy[k] != 0) {
node[k] += lazy[k];
if (r - l > 1) {
lazy[2 * k + 1] += lazy[k] / 2;
lazy[2 * k + 2] += lazy[k] / 2;
}
lazy[k] = 0;
}
}
void add(int a, int b, ll x, int k = 0, int l = 0, int r = -1) {
if (r < 0)
r = n;
eval(k, l, r);
if (b <= l || r <= a)
return;
if (a <= l && r <= b) {
lazy[k] += (r - l) * x;
eval(k, l, r);
} else {
add(a, b, x, 2 * k + 1, l, (l + r) / 2);
add(a, b, x, 2 * k + 2, (l + r) / 2, r);
node[k] = node[2 * k + 1] + node[2 * k + 2];
}
}
ll getsum(int a, int b, int k = 0, int l = 0, int r = -1) {
if (r < 0)
r = n;
eval(k, l, r);
if (b <= l || r <= a)
return 0;
if (a <= l && r <= b)
return node[k];
ll vl = getsum(a, b, 2 * k + 1, l, (l + r) / 2);
ll vr = getsum(a, b, 2 * k + 2, (l + r) / 2, r);
return vl + vr;
}
};
ll digit_sum(ll v) {
ll ret = 0;
while (v) {
ret += (v % 10);
v /= 10;
}
return ret;
}
template <typename T> struct Kruskal {
struct edge {
ll from, to;
T cost;
ll used;
edge() {}
edge(ll from, ll to, T cost) : from(from), to(to), cost(cost), used(0) {}
bool operator<(const edge &e) const { return cost < e.cost; }
};
ll n;
vector<ll> p, r;
vector<edge> edges;
Kruskal() {}
Kruskal(ll n) : n(n) {}
void init(ll n) {
r.assign(n, 1);
p.resize(n);
iota(p.begin(), p.end(), 0);
}
ll find(ll x) { return (x == p[x] ? x : p[x] = find(p[x])); }
bool same(ll x, ll y) { return find(x) == find(y); }
void unite(ll x, ll y) {
x = find(x);
y = find(y);
if (x == y)
return;
if (r[x] < r[y])
swap(x, y);
r[x] += r[y];
p[y] = x;
}
void add_edge(ll u, ll v, T c) { edges.emplace_back(u, v, c); }
T build() {
sort(edges.begin(), edges.end());
init(n);
T res = 0;
for (auto &e : edges) {
if (!same(e.from, e.to)) {
res += e.cost;
unite(e.from, e.to);
e.used = 1;
}
}
return res;
}
};
int LIS(int a[], int n) {
vector<int> A(n, 0x3f3f3f3f);
for (int i = 0; i < n; i++)
*lower_bound(A.begin(), A.end(), a[i]) = a[i];
return find(A.begin(), A.end(), 0x3f3f3f3f) - A.begin();
}
// string maze[1010];
// ll maze[100][100];
// ll bfs(ll H, ll W, ll sx, ll sy, ll gx, ll gy)
// {
// int dx[4] = {1, 0, -1, 0};
// int dy[4] = {0, 1, 0, -1};
// vector<vector<ll>> dist(H, vector<ll>(W, -1));
// dist[sy][sx] = 0;
// queue<PL> q;
// q.push({sy, sx});
// while (!q.empty())
// {
// ll x, y;
// tie(y, x) = q.front();
// q.pop();
// if (y == gy && x == gx)
// {
// break;
// }
// for (int t = 0; t < 4; t++)
// {
// ll nx = x + dx[t], ny = y + dy[t];
// if (nx < 0 || ny < 0 || nx >= W || ny >= H || dist[ny][nx] != -1
// || maze[ny][nx] == '#')
// {
// continue;
// }
// dist[ny][nx] = dist[y][x] + 1;
// q.push({ny, nx});
// }
// }
// return dist[gy][gx];
// }
vector<vector<ll>> warshall_floyd(ll n, vector<vector<ll>> g, ll INF) {
// init vector<vector<ll>> c(10,vector<ll>(10,0));
for (int k = 0; k < n; k++) {
for (int i = 0; i < n; i++) {
for (int j = 0; j < n; j++) {
if (g[i][k] == INF || g[k][j] == INF)
continue;
g[i][j] = min(g[i][j], g[i][k] + g[k][j]);
}
}
}
return g;
}
struct Dijkstra {
ll n;
vector<vector<pair<ll, ll>>> Edges;
vector<ll> Dist;
vector<ll> Prev;
vector<ll> PathNum;
Dijkstra(ll n) : n(n), Edges(n), Dist(n), Prev(n), PathNum(n) {
Prev.assign(n, -1);
};
void add_edge(ll a, ll b, ll c, bool directed = true) {
if (directed) {
Edges[a].emplace_back(make_pair(b, c));
} else {
Edges[a].emplace_back(make_pair(b, c));
Edges[b].emplace_back(make_pair(a, c));
}
}
// O((E+V)logV)
void build(int start) {
priority_queue<P, vector<P>, greater<P>> queue;
fill(Dist.begin(), Dist.end(), 1e+18); // 1e18 !?!?
Dist[start] = 0;
PathNum[start] = 1;
queue.push(PL(0, start));
while (!queue.empty()) {
PL p = queue.top();
queue.pop();
int v = p.second;
if (Dist[v] < p.first)
continue;
for (int i = 0; i < Edges[v].size(); i++) {
PL e = Edges[v][i];
if (Dist[e.first] > Dist[v] + e.second) {
Dist[e.first] = Dist[v] + e.second;
queue.push(P(Dist[e.first], e.first));
Prev[e.first] = v;
PathNum[e.first] = PathNum[v];
} else if (Dist[e.first] == Dist[v] + e.second) {
PathNum[e.first] += PathNum[v];
PathNum[e.first] %= MOD;
}
}
}
}
ll dist(ll t) { return Dist[t]; }
vector<ll> get_path(ll t) {
vector<ll> path;
for (; t != -1; t = Prev[t]) {
path.push_back(t);
}
reverse(path.begin(), path.end());
return path;
}
ll get_path_num(ll t) { return PathNum[t]; }
// int solve()
// {
// ll v, e, r;
// cin >> v >> e >> r;
// Dijkstra dij(v);
// for (int i = 0; i < e; i++)
// {
// ll a, b, c;
// cin >> a >> b >> c;
// dij.add_edge(a, b, c);
// }
// dij.build(r);
// for (int i = 0; i < v; i++)
// {
// if (dij.dist(i) == 1e18)
// {
// cout << "INF" << endl;
// }
// else
// {
// cout << dij.dist(i) << endl;
// cout << dij.get_path(i) << endl;
// cout << dij.get_path_num(i) << endl;
// }
// }
// return 0;
// }
};
/*------------------------------*/
template <typename T> istream &operator>>(istream &is, vector<T> &vec) {
for (auto &v : vec)
is >> v;
return is;
}
template <typename T> ostream &operator<<(ostream &os, const vector<T> &vec) {
os << "[";
for (auto v : vec)
os << v << ",";
os << "]";
return os;
}
template <typename T> ostream &operator<<(ostream &os, const deque<T> &vec) {
os << "deq[";
for (auto v : vec)
os << v << ",";
os << "]";
return os;
}
template <typename T> ostream &operator<<(ostream &os, const set<T> &vec) {
os << "{";
for (auto v : vec)
os << v << ",";
os << "}";
return os;
}
template <typename T>
ostream &operator<<(ostream &os, const unordered_set<T> &vec) {
os << "{";
for (auto v : vec)
os << v << ",";
os << "}";
return os;
}
template <typename T> ostream &operator<<(ostream &os, const multiset<T> &vec) {
os << "{";
for (auto v : vec)
os << v << ",";
os << "}";
return os;
}
template <typename T>
ostream &operator<<(ostream &os, const unordered_multiset<T> &vec) {
os << "{";
for (auto v : vec)
os << v << ",";
os << "}";
return os;
}
template <typename T1, typename T2>
ostream &operator<<(ostream &os, const pair<T1, T2> &pa) {
os << "(" << pa.first << "," << pa.second << ")";
return os;
}
template <typename TK, typename TV>
ostream &operator<<(ostream &os, const map<TK, TV> &mp) {
os << "{";
for (auto v : mp)
os << v.first << "=>" << v.second << ",";
os << "}";
return os;
}
template <typename TK, typename TV>
ostream &operator<<(ostream &os, const unordered_map<TK, TV> &mp) {
os << "{";
for (auto v : mp)
os << v.first << "=>" << v.second << ",";
os << "}";
return os;
};
#define dbg(x) \
cerr << #x << " = " << (x) << " (L" << __LINE__ << ") " << __FILE__ << endl;
template <typename A, size_t N, typename T>
void Fill(A (&array)[N], const T &val) {
fill((T *)array, (T *)(array + N), val);
}
ll a[101010];
ll solve() {
ll n;
cin >> n;
for (int i = 0; i < n; i++) {
cin >> a[i];
}
deque<ll> d;
d.push_back(a[0]);
for (int i = 1; i < n; i++) {
if (d[0] >= a[i]) {
d.push_front(a[i]);
} else {
ll ind = lower_bound(d.begin(), d.end(), a[i]) - d.begin();
d[ind - 1] = a[i];
}
}
cout << d.size() << endl;
return 0;
}
int main() {
// cout.precision(10);
ios::sync_with_stdio(false);
cin.tie(0);
solve();
}
| replace | 536 | 538 | 536 | 538 | -11 | |
p02973 | C++ | Time Limit Exceeded | #include <bits/stdc++.h>
using namespace std;
typedef unsigned long ul;
typedef unsigned long long ull;
typedef long long ll;
typedef vector<ll> vint;
typedef vector<vector<ll>> vvint;
typedef vector<vector<vector<ll>>> vvvint;
typedef vector<string> vstring;
typedef vector<vector<string>> vvstring;
typedef vector<char> vchar;
typedef vector<vector<char>> vvchar;
typedef vector<long double> vdouble;
typedef vector<vector<long double>> vvdouble;
typedef vector<vector<vector<long double>>> vvvdouble;
typedef pair<ll, ll> pint;
typedef vector<pint> vpint;
typedef vector<bool> vbool;
#define rep(i, n) for (ll i = 0; i < n; i++)
#define repf(i, f, n) for (ll i = f; i < n; i++)
#define repr(i, n) for (ll i = n - 1; i >= 0; i--)
#define mp make_pair
#define mt make_tuple
#define pb push_back
#define pf push_front
#define fi first
#define se second
#define ALL(obj) (obj).begin(), (obj).end()
// #define LLONG_MAX 9223372036854775806
#define vmax(vec) *max_element(vec.begin(), vec.end())
#define vmin(vec) *min_element(vec.begin(), vec.end())
#define vsort(vec) sort(vec.begin(), vec.end())
#define vsortgr(vec) sort(vec.begin(), vec.end(), greater<ll>())
// #define MOD 1000000007
#define MOD 998244353
template <class T> bool chmax(T &a, const T &b) {
if (a < b) {
a = b;
return 1;
}
return 0;
}
template <class T> bool chmin(T &a, const T &b) {
if (b < a) {
a = b;
return 1;
}
return 0;
}
//
// struct Node{
// vint children;
// ll index;
// ll prop;
// };
// struct edge{ll to; ll cost;};
int dy[] = {0, 0, 1, -1};
int dx[] = {
1,
-1,
0,
0,
};
// ll X,Y,Z,K;
// ll pmax = 30000000000;
// vint A,B,C;
// void comb(vector<vector <long long int> > &v){
// for(int i = 0;i <v.size(); i++){
// v[i][0]=1;
// v[i][i]=1;
// }
// for(int k = 1;k <v.size();k++){
// for(int j = 1;j<k;j++){
// v[k][j]=((v[k-1][j-1]+v[k-1][j])%MOD);
// }
// }
// }
ll gcd(ll a, ll b) {
if (a < b) {
a ^= b;
b ^= a;
a ^= b;
}
return b ? gcd(b, a % b) : a;
}
ll lcm(int a, ll b) { return a * b / gcd(a, b); }
// 繰り返し二乗法
ll power(ll a, ll b) {
ll res = 1;
while (b > 0) {
if (b & 1)
res = res * a % MOD;
a = a * a % MOD;
b >>= 1;
}
return res;
}
const int MAX = 510000;
ll fact[MAX], fact_inv[MAX];
void init_fact(ll n) {
fact[0] = 1;
// 階乗の計算
rep(i, n) fact[i + 1] = fact[i] * (i + 1) % MOD;
fact_inv[n] = power(fact[n], MOD - 2);
// 逆元の計算
for (ll i = n - 1; i >= 0; i--)
fact_inv[i] = fact_inv[i + 1] * (i + 1) % MOD;
}
ll comb(ll n, ll r) {
return (fact[n] * fact_inv[r]) % MOD * fact_inv[n - r] % MOD;
}
ll perm(ll n, ll r) { return (fact[n] * fact_inv[n - r]) % MOD; }
struct UnionFind {
vector<ll> par; // par[i]:iの親の番号 (例) par[3] = 2 : 3の親が2
vector<ll> num;
// vector<ll> dist; // rootまでの距離
UnionFind(ll N) : par(N), num(N) { // 最初は全てが根であるとして初期化
for (ll i = 0; i < N; i++)
par[i] = i;
for (ll i = 0; i < N; i++)
num[i] = 1;
// for(ll i = 0; i < N; i++) dist[i] = 0;
}
ll root(ll x) { // データxが属する木の根を再帰で得る：root(x) = {xの木の根}
if (par[x] == x)
return x;
return par[x] = root(par[x]);
}
void unite(ll x, ll y) { // xとyの木を併合
ll rx = root(x); // xの根をrx
ll ry = root(y); // yの根をry
if (rx == ry)
return; // xとyの根が同じ(=同じ木にある)時はそのまま
par[rx] =
ry; // xとyの根が同じでない(=同じ木にない)時：xの根rxをyの根ryにつける
num[ry] = num[rx] + num[ry];
}
bool same(ll x, ll y) { // 2つのデータx, yが属する木が同じならtrueを返す
ll rx = root(x);
ll ry = root(y);
return rx == ry;
}
ll size(ll x) { return num[root(x)]; }
};
vint divisor(ll n) { // nの約数
vint ret;
for (ll i = 1; i * i <= n; i++) {
if (n % i == 0) {
ret.pb(i);
if (i * i != n)
ret.pb(n / i);
}
}
vsort(ret);
return ret;
}
ll my_pow(ll x, ll y) {
ll rtn = 1;
rep(i, y) rtn *= x;
return rtn;
}
ll get_digit_in(ll n, ll i) { // i桁目の数字を得る。
for (ll j = 0; j < i - 1; j++) {
n /= 10;
}
return n % 10;
}
ll get_digit(ll n) {
ll rtn = 0;
while (n > 0) {
n /= 10;
rtn++;
}
return rtn;
}
map<ll, ll> prime_factor(ll n) {
map<ll, ll> rtn;
for (ll i = 2; i * i <= n; i++) {
while (n % i == 0) {
rtn[i]++;
n /= i;
}
}
if (n != 1)
rtn[n] = 1;
return rtn;
}
// nPnの順列に対して処理を実行する
void foreach_permutation(ll n, function<void(ll *)> f) {
ll indexes[n];
for (ll i = 0; i < n; i++)
indexes[i] = i;
do {
f(indexes);
} while (std::next_permutation(indexes, indexes + n));
}
void recursive_comb(ll *indexes, ll s, ll rest, function<void(ll *)> f) {
if (rest == 0) {
f(indexes);
} else {
if (s < 0)
return;
recursive_comb(indexes, s - 1, rest, f);
indexes[rest - 1] = s;
recursive_comb(indexes, s - 1, rest - 1, f);
}
}
// nCkの組み合わせに対して処理を実行する
void foreach_comb(ll n, ll k, function<void(ll *)> f) {
ll indexes[k];
recursive_comb(indexes, n - 1, k, f);
}
// nPkの順列に対して処理を実行する
void foreach_permutation(ll n, ll k, function<void(ll *)> f) {
foreach_comb(n, k, [&](ll *c_indexes) {
foreach_permutation(k, [&](ll *p_indexes) {
ll indexes[k];
for (ll i = 0; i < k; i++) {
indexes[i] = c_indexes[p_indexes[i]];
}
f(indexes);
});
});
}
ll arr[55556];
vint primes;
// エラトステネスの篩
void Eratosthenes() {
ll N = 55556;
for (ll i = 0; i < N; i++) {
arr[i] = 1;
}
for (ll i = 2; i < sqrt(N); i++) {
if (arr[i]) {
for (ll j = 0; i * (j + 2) < N; j++) {
arr[i * (j + 2)] = 0;
}
}
}
for (ll i = 2; i < N; i++) {
if (arr[i] && i % 5 == 1) {
primes.pb(i);
// cout << i << endl;
}
}
}
bool f(ll x, ll n, ll k) { return (n - x) * (n - x + 1) - x < k; }
int main() {
cout << fixed << setprecision(12);
ll N;
cin >> N;
vint A(N);
rep(i, N) cin >> A[i];
deque<ll> b;
rep(i, N) {
bool f = false;
auto it = lower_bound(ALL(b), A[i]);
if (it == b.begin()) {
b.push_front(A[i]);
} else {
*(it - 1) = A[i];
sort(it - 1, b.end());
}
}
cout << b.size() << endl;
}
//
| #include <bits/stdc++.h>
using namespace std;
typedef unsigned long ul;
typedef unsigned long long ull;
typedef long long ll;
typedef vector<ll> vint;
typedef vector<vector<ll>> vvint;
typedef vector<vector<vector<ll>>> vvvint;
typedef vector<string> vstring;
typedef vector<vector<string>> vvstring;
typedef vector<char> vchar;
typedef vector<vector<char>> vvchar;
typedef vector<long double> vdouble;
typedef vector<vector<long double>> vvdouble;
typedef vector<vector<vector<long double>>> vvvdouble;
typedef pair<ll, ll> pint;
typedef vector<pint> vpint;
typedef vector<bool> vbool;
#define rep(i, n) for (ll i = 0; i < n; i++)
#define repf(i, f, n) for (ll i = f; i < n; i++)
#define repr(i, n) for (ll i = n - 1; i >= 0; i--)
#define mp make_pair
#define mt make_tuple
#define pb push_back
#define pf push_front
#define fi first
#define se second
#define ALL(obj) (obj).begin(), (obj).end()
// #define LLONG_MAX 9223372036854775806
#define vmax(vec) *max_element(vec.begin(), vec.end())
#define vmin(vec) *min_element(vec.begin(), vec.end())
#define vsort(vec) sort(vec.begin(), vec.end())
#define vsortgr(vec) sort(vec.begin(), vec.end(), greater<ll>())
// #define MOD 1000000007
#define MOD 998244353
template <class T> bool chmax(T &a, const T &b) {
if (a < b) {
a = b;
return 1;
}
return 0;
}
template <class T> bool chmin(T &a, const T &b) {
if (b < a) {
a = b;
return 1;
}
return 0;
}
//
// struct Node{
// vint children;
// ll index;
// ll prop;
// };
// struct edge{ll to; ll cost;};
int dy[] = {0, 0, 1, -1};
int dx[] = {
1,
-1,
0,
0,
};
// ll X,Y,Z,K;
// ll pmax = 30000000000;
// vint A,B,C;
// void comb(vector<vector <long long int> > &v){
// for(int i = 0;i <v.size(); i++){
// v[i][0]=1;
// v[i][i]=1;
// }
// for(int k = 1;k <v.size();k++){
// for(int j = 1;j<k;j++){
// v[k][j]=((v[k-1][j-1]+v[k-1][j])%MOD);
// }
// }
// }
ll gcd(ll a, ll b) {
if (a < b) {
a ^= b;
b ^= a;
a ^= b;
}
return b ? gcd(b, a % b) : a;
}
ll lcm(int a, ll b) { return a * b / gcd(a, b); }
// 繰り返し二乗法
ll power(ll a, ll b) {
ll res = 1;
while (b > 0) {
if (b & 1)
res = res * a % MOD;
a = a * a % MOD;
b >>= 1;
}
return res;
}
const int MAX = 510000;
ll fact[MAX], fact_inv[MAX];
void init_fact(ll n) {
fact[0] = 1;
// 階乗の計算
rep(i, n) fact[i + 1] = fact[i] * (i + 1) % MOD;
fact_inv[n] = power(fact[n], MOD - 2);
// 逆元の計算
for (ll i = n - 1; i >= 0; i--)
fact_inv[i] = fact_inv[i + 1] * (i + 1) % MOD;
}
ll comb(ll n, ll r) {
return (fact[n] * fact_inv[r]) % MOD * fact_inv[n - r] % MOD;
}
ll perm(ll n, ll r) { return (fact[n] * fact_inv[n - r]) % MOD; }
struct UnionFind {
vector<ll> par; // par[i]:iの親の番号 (例) par[3] = 2 : 3の親が2
vector<ll> num;
// vector<ll> dist; // rootまでの距離
UnionFind(ll N) : par(N), num(N) { // 最初は全てが根であるとして初期化
for (ll i = 0; i < N; i++)
par[i] = i;
for (ll i = 0; i < N; i++)
num[i] = 1;
// for(ll i = 0; i < N; i++) dist[i] = 0;
}
ll root(ll x) { // データxが属する木の根を再帰で得る：root(x) = {xの木の根}
if (par[x] == x)
return x;
return par[x] = root(par[x]);
}
void unite(ll x, ll y) { // xとyの木を併合
ll rx = root(x); // xの根をrx
ll ry = root(y); // yの根をry
if (rx == ry)
return; // xとyの根が同じ(=同じ木にある)時はそのまま
par[rx] =
ry; // xとyの根が同じでない(=同じ木にない)時：xの根rxをyの根ryにつける
num[ry] = num[rx] + num[ry];
}
bool same(ll x, ll y) { // 2つのデータx, yが属する木が同じならtrueを返す
ll rx = root(x);
ll ry = root(y);
return rx == ry;
}
ll size(ll x) { return num[root(x)]; }
};
vint divisor(ll n) { // nの約数
vint ret;
for (ll i = 1; i * i <= n; i++) {
if (n % i == 0) {
ret.pb(i);
if (i * i != n)
ret.pb(n / i);
}
}
vsort(ret);
return ret;
}
ll my_pow(ll x, ll y) {
ll rtn = 1;
rep(i, y) rtn *= x;
return rtn;
}
ll get_digit_in(ll n, ll i) { // i桁目の数字を得る。
for (ll j = 0; j < i - 1; j++) {
n /= 10;
}
return n % 10;
}
ll get_digit(ll n) {
ll rtn = 0;
while (n > 0) {
n /= 10;
rtn++;
}
return rtn;
}
map<ll, ll> prime_factor(ll n) {
map<ll, ll> rtn;
for (ll i = 2; i * i <= n; i++) {
while (n % i == 0) {
rtn[i]++;
n /= i;
}
}
if (n != 1)
rtn[n] = 1;
return rtn;
}
// nPnの順列に対して処理を実行する
void foreach_permutation(ll n, function<void(ll *)> f) {
ll indexes[n];
for (ll i = 0; i < n; i++)
indexes[i] = i;
do {
f(indexes);
} while (std::next_permutation(indexes, indexes + n));
}
void recursive_comb(ll *indexes, ll s, ll rest, function<void(ll *)> f) {
if (rest == 0) {
f(indexes);
} else {
if (s < 0)
return;
recursive_comb(indexes, s - 1, rest, f);
indexes[rest - 1] = s;
recursive_comb(indexes, s - 1, rest - 1, f);
}
}
// nCkの組み合わせに対して処理を実行する
void foreach_comb(ll n, ll k, function<void(ll *)> f) {
ll indexes[k];
recursive_comb(indexes, n - 1, k, f);
}
// nPkの順列に対して処理を実行する
void foreach_permutation(ll n, ll k, function<void(ll *)> f) {
foreach_comb(n, k, [&](ll *c_indexes) {
foreach_permutation(k, [&](ll *p_indexes) {
ll indexes[k];
for (ll i = 0; i < k; i++) {
indexes[i] = c_indexes[p_indexes[i]];
}
f(indexes);
});
});
}
ll arr[55556];
vint primes;
// エラトステネスの篩
void Eratosthenes() {
ll N = 55556;
for (ll i = 0; i < N; i++) {
arr[i] = 1;
}
for (ll i = 2; i < sqrt(N); i++) {
if (arr[i]) {
for (ll j = 0; i * (j + 2) < N; j++) {
arr[i * (j + 2)] = 0;
}
}
}
for (ll i = 2; i < N; i++) {
if (arr[i] && i % 5 == 1) {
primes.pb(i);
// cout << i << endl;
}
}
}
bool f(ll x, ll n, ll k) { return (n - x) * (n - x + 1) - x < k; }
int main() {
cout << fixed << setprecision(12);
ll N;
cin >> N;
vint A(N);
rep(i, N) cin >> A[i];
deque<ll> b;
rep(i, N) {
bool f = false;
auto it = lower_bound(ALL(b), A[i]);
if (it == b.begin()) {
b.push_front(A[i]);
} else {
*(it - 1) = A[i];
// sort(it-1, b.end());
}
}
cout << b.size() << endl;
}
//
| replace | 299 | 300 | 299 | 300 | TLE | |
p02973 | C++ | Time Limit Exceeded | #include <bits/stdc++.h>
using namespace std;
#define fs first
#define sc second
#define pb push_back
#define mp make_pair
#define eb emplace_back
#define ALL(A) A.begin(), A.end()
#define RALL(A) A.rbegin(), A.rend()
typedef long long LL;
typedef pair<int, int> P;
const LL mod = 1000000007;
const LL LINF = 1LL << 60;
const int INF = 1 << 30;
int dx[] = {1, 0, -1, 0};
int dy[] = {0, 1, 0, -1};
int main() {
int n;
cin >> n;
vector<int> a(n);
for (int i = 0; i < n; i++) {
cin >> a[i];
}
int ans = 0;
multiset<int> st;
for (int i = 0; i < n; i++) {
auto p = upper_bound(ALL(st), -a[i]);
if (p == st.end()) {
ans++;
} else {
st.erase(p);
}
st.insert(-a[i]);
}
cout << ans << endl;
return 0;
}
| #include <bits/stdc++.h>
using namespace std;
#define fs first
#define sc second
#define pb push_back
#define mp make_pair
#define eb emplace_back
#define ALL(A) A.begin(), A.end()
#define RALL(A) A.rbegin(), A.rend()
typedef long long LL;
typedef pair<int, int> P;
const LL mod = 1000000007;
const LL LINF = 1LL << 60;
const int INF = 1 << 30;
int dx[] = {1, 0, -1, 0};
int dy[] = {0, 1, 0, -1};
int main() {
int n;
cin >> n;
vector<int> a(n);
for (int i = 0; i < n; i++) {
cin >> a[i];
}
int ans = 0;
multiset<int> st;
for (int i = 0; i < n; i++) {
auto p = st.upper_bound(-a[i]);
if (p == st.end()) {
ans++;
} else {
st.erase(p);
}
st.insert(-a[i]);
}
cout << ans << endl;
return 0;
}
| replace | 27 | 28 | 27 | 28 | TLE | |
p02973 | C++ | Runtime Error | #include <bits/stdc++.h>
using namespace std;
using ll = long long;
const ll MOD = 1000000007;
const int dx[4] = {+1, 0, -1, 0};
const int dy[4] = {0, -1, 0, +1};
int main() {
cin.tie(0);
ios_base::sync_with_stdio(false);
int n;
cin >> n;
vector<ll> a(n);
vector<ll> b;
for (int i = 0; i < n; i++) {
cin >> a[i];
}
b.push_back(-a[0]);
for (int i = 1; i < n; i++) {
auto iter = upper_bound(b.begin(), b.end(), -a[i]);
// cout << *iter << endl;
if (iter == b.end()) {
b.push_back(-a[i]);
continue;
}
*(--iter) = -a[i];
}
/*
for(ll bi: b){
cout << bi << endl;
}
*/
cout << b.size() << endl;
} | #include <bits/stdc++.h>
using namespace std;
using ll = long long;
const ll MOD = 1000000007;
const int dx[4] = {+1, 0, -1, 0};
const int dy[4] = {0, -1, 0, +1};
int main() {
cin.tie(0);
ios_base::sync_with_stdio(false);
int n;
cin >> n;
vector<ll> a(n);
vector<ll> b;
for (int i = 0; i < n; i++) {
cin >> a[i];
}
b.push_back(-a[0]);
for (int i = 1; i < n; i++) {
auto iter = upper_bound(b.begin(), b.end(), -a[i]);
// cout << *iter << endl;
if (iter == b.end()) {
b.push_back(-a[i]);
continue;
}
*(iter) = -a[i];
}
/*
for(ll bi: b){
cout << bi << endl;
}
*/
cout << b.size() << endl;
} | replace | 29 | 30 | 29 | 30 | -11 | |
p02973 | C++ | Time Limit Exceeded | #include <bits/stdc++.h>
#pragma GCC optimize("unroll-loops,no-stack-protector")
#pragma GCC target("sse,sse2,ssse3,sse4,popcnt,abm,mmx,avx,tune=native")
#define watch(x) cout << (#x) << " is " << (x) << endl
#define debug cout << "hi" << endl
using namespace std;
typedef long long ll;
typedef long double ld;
typedef pair<int, int> pii;
typedef pair<long long, long long> pll;
ll gcd(ll a, ll b) { return (!b ? a : gcd(b, a % b)); }
ll lcm(ll a, ll b) { return ((a * b) / gcd(a, b)); }
bool cmp(int a, int b) { return a > b; }
const ll mod = 1e9 + 7;
const int INF32 = 1 << 30;
const ll INF64 = 1LL << 60;
const ld pi = 3.141592653589793;
long long modpow(long long n, long long k, long long mod) {
if (k == 0)
return 1;
long long r = modpow(n * n % mod, k >> 1, mod);
if (k & 1)
r = r * n % mod;
return r;
}
void solve() {
int n;
cin >> n;
vector<int> a(n);
for (int i = 0; i < n; i++)
cin >> a[i];
multiset<int> s;
int ans = 1;
s.insert(a[0]);
for (int i = 1; i < n; i++) {
auto it = lower_bound(s.begin(), s.end(), a[i]);
if (it == s.begin())
s.insert(a[i]);
else {
it = prev(it);
s.erase(it);
s.insert(a[i]);
}
}
cout << s.size();
}
int main() {
ios_base::sync_with_stdio(false);
cin.tie(NULL);
cout.tie(NULL);
solve();
return 0;
} | #include <bits/stdc++.h>
#pragma GCC optimize("unroll-loops,no-stack-protector")
#pragma GCC target("sse,sse2,ssse3,sse4,popcnt,abm,mmx,avx,tune=native")
#define watch(x) cout << (#x) << " is " << (x) << endl
#define debug cout << "hi" << endl
using namespace std;
typedef long long ll;
typedef long double ld;
typedef pair<int, int> pii;
typedef pair<long long, long long> pll;
ll gcd(ll a, ll b) { return (!b ? a : gcd(b, a % b)); }
ll lcm(ll a, ll b) { return ((a * b) / gcd(a, b)); }
bool cmp(int a, int b) { return a > b; }
const ll mod = 1e9 + 7;
const int INF32 = 1 << 30;
const ll INF64 = 1LL << 60;
const ld pi = 3.141592653589793;
long long modpow(long long n, long long k, long long mod) {
if (k == 0)
return 1;
long long r = modpow(n * n % mod, k >> 1, mod);
if (k & 1)
r = r * n % mod;
return r;
}
void solve() {
int n;
cin >> n;
vector<int> a(n);
for (int i = 0; i < n; i++)
cin >> a[i];
multiset<int> s;
int ans = 1;
s.insert(a[0]);
for (int i = 1; i < n; i++) {
auto it = s.lower_bound(a[i]);
if (it == s.begin())
s.insert(a[i]);
else {
it = prev(it);
s.erase(it);
s.insert(a[i]);
}
}
cout << s.size();
}
int main() {
ios_base::sync_with_stdio(false);
cin.tie(NULL);
cout.tie(NULL);
solve();
return 0;
} | replace | 40 | 41 | 40 | 41 | TLE | |
p02973 | C++ | Time Limit Exceeded | // q055.cpp
// Tue Aug 25 22:09:54 2020
#include <algorithm>
#include <iostream>
#include <map>
#include <math.h>
#include <queue>
#include <set>
#include <string>
#include <unordered_map>
#include <vector>
#define INTINF 2147483647
#define LLINF 9223372036854775807
#define MOD 1000000007
#define rep(i, n) for (int i = 0; i < (n); ++i)
using namespace std;
using ll = long long;
typedef pair<int, int> P;
int main() {
int n;
cin >> n;
int a[n];
rep(i, n) cin >> a[i];
multiset<int> ms;
rep(i, n) {
auto itr = lower_bound(ms.begin(), ms.end(), a[i]);
if (itr != ms.begin()) {
itr--;
ms.erase(itr);
}
ms.insert(a[i]);
}
cout << ms.size() << endl;
// printf("%.4f\n",ans);
} | // q055.cpp
// Tue Aug 25 22:09:54 2020
#include <algorithm>
#include <iostream>
#include <map>
#include <math.h>
#include <queue>
#include <set>
#include <string>
#include <unordered_map>
#include <vector>
#define INTINF 2147483647
#define LLINF 9223372036854775807
#define MOD 1000000007
#define rep(i, n) for (int i = 0; i < (n); ++i)
using namespace std;
using ll = long long;
typedef pair<int, int> P;
int main() {
int n;
cin >> n;
int a[n];
rep(i, n) cin >> a[i];
multiset<int> ms;
rep(i, n) {
auto itr = ms.lower_bound(a[i]);
if (itr != ms.begin()) {
itr--;
ms.erase(itr);
}
ms.insert(a[i]);
}
cout << ms.size() << endl;
// printf("%.4f\n",ans);
} | replace | 30 | 31 | 30 | 31 | TLE | |
p02973 | C++ | Time Limit Exceeded | // abc134.cpp
// Sat Oct 12 12:39:21 2019
#include <algorithm>
#include <iostream>
#include <map>
#include <math.h>
#include <queue>
#include <set>
#include <string>
#include <unordered_map>
#include <vector>
#define INTINF 2147483647
#define LLINF 9223372036854775807
using namespace std;
using ll = long long;
typedef pair<int, int> P;
int main() {
int n;
cin >> n;
int a[n];
vector<int> heads;
for (int i = 0; i < n; i++) {
int a;
cin >> a;
if (heads.size() == 0) {
heads.push_back(a);
} else {
if (a <= heads[0]) {
heads.push_back(a);
sort(heads.begin(), heads.end());
} else {
auto iter = lower_bound(heads.begin(), heads.end(), a);
heads[iter - heads.begin() - 1] = a;
}
}
}
cout << heads.size() << endl;
// printf("%.4f\n",ans);
} | // abc134.cpp
// Sat Oct 12 12:39:21 2019
#include <algorithm>
#include <iostream>
#include <map>
#include <math.h>
#include <queue>
#include <set>
#include <string>
#include <unordered_map>
#include <vector>
#define INTINF 2147483647
#define LLINF 9223372036854775807
using namespace std;
using ll = long long;
typedef pair<int, int> P;
int main() {
int n;
cin >> n;
int a[n];
vector<int> heads;
for (int i = 0; i < n; i++) {
int a;
cin >> a;
if (heads.size() == 0) {
heads.push_back(a);
} else {
if (a <= heads[0]) {
heads.insert(heads.begin(), a);
} else {
auto iter = lower_bound(heads.begin(), heads.end(), a);
heads[iter - heads.begin() - 1] = a;
}
}
}
cout << heads.size() << endl;
// printf("%.4f\n",ans);
} | replace | 31 | 33 | 31 | 32 | TLE | |
p02973 | C++ | Time Limit Exceeded | #include <bits/stdc++.h>
using namespace std;
int main() {
int n;
while (cin >> n) {
multiset<int> LIS;
int temp;
cin >> temp;
LIS.insert(temp);
for (int i = 1; i < n; i++) {
cin >> temp;
if (temp <= *LIS.begin()) {
LIS.insert(temp);
} else {
auto p = lower_bound(LIS.begin(), LIS.end(), temp);
if (p != LIS.begin())
p--;
LIS.erase(p);
LIS.insert(temp);
}
}
cout << LIS.size() << endl;
}
return 0;
}
| #include <bits/stdc++.h>
using namespace std;
int main() {
int n;
while (cin >> n) {
multiset<int> LIS;
int temp;
cin >> temp;
LIS.insert(temp);
for (int i = 1; i < n; i++) {
cin >> temp;
if (temp <= *LIS.begin()) {
LIS.insert(temp);
} else {
auto p = LIS.lower_bound(temp);
if (p != LIS.begin())
p--;
LIS.erase(p);
LIS.insert(temp);
}
}
cout << LIS.size() << endl;
}
return 0;
}
| replace | 15 | 16 | 15 | 16 | TLE | |
p02974 | C++ | Runtime Error | /*{{{*/
#include <algorithm>
#include <assert.h>
#include <bitset>
#include <cmath>
#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <iostream>
#include <limits.h>
#include <map>
#include <queue>
#include <set>
#include <sstream>
#include <string>
#include <vector>
#define SZ(X) ((int)(X).size())
#define ALL(X) (X).begin(), (X).end()
#define REP(I, N) for (int I = 0; I < (N); ++I)
#define REPP(I, A, B) for (int I = (A); I < (B); ++I)
#define FOR(I, A, B) for (int I = (A); I <= (B); ++I)
#define FORS(I, S) for (int I = 0; S[I]; ++I)
#define RS(X) scanf("%s", (X))
#define SORT_UNIQUE(c) \
(sort(c.begin(), c.end()), \
c.resize(distance(c.begin(), unique(c.begin(), c.end()))))
#define GET_POS(c, x) (lower_bound(c.begin(), c.end(), x) - c.begin())
#define CASET \
int ___T; \
scanf("%d", &___T); \
for (int cs = 1; cs <= ___T; cs++)
#define MP make_pair
#define PB push_back
#define MS0(X) memset((X), 0, sizeof((X)))
#define MS1(X) memset((X), -1, sizeof((X)))
#define LEN(X) strlen(X)
#define F first
#define S second
using namespace std;
typedef long long LL;
typedef unsigned long long ULL;
typedef long double LD;
typedef pair<int, int> PII;
typedef vector<int> VI;
typedef vector<LL> VL;
typedef vector<PII> VPII;
typedef pair<LL, LL> PLL;
typedef vector<PLL> VPLL;
template <class T> void _R(T &x) { cin >> x; }
void _R(int &x) { scanf("%d", &x); }
void _R(LL &x) { scanf("%lld", &x); }
void _R(double &x) { scanf("%lf", &x); }
void _R(char &x) { scanf(" %c", &x); }
void _R(char *x) { scanf("%s", x); }
void R() {}
template <class T, class... U> void R(T &head, U &...tail) {
_R(head);
R(tail...);
}
template <class T> void _W(const T &x) { cout << x; }
void _W(const int &x) { printf("%d", x); }
void _W(const LL &x) { printf("%lld", x); }
void _W(const double &x) { printf("%.16f", x); }
void _W(const char &x) { putchar(x); }
void _W(const char *x) { printf("%s", x); }
template <class T, class U> void _W(const pair<T, U> &x) {
_W(x.F);
putchar(' ');
_W(x.S);
}
template <class T> void _W(const vector<T> &x) {
for (auto i = x.begin(); i != x.end(); _W(*i++))
if (i != x.cbegin())
putchar(' ');
}
void W() {}
template <class T, class... U> void W(const T &head, const U &...tail) {
_W(head);
putchar(sizeof...(tail) ? ' ' : '\n');
W(tail...);
}
#ifdef HOME
#define DEBUG(...) \
{ \
printf("# "); \
printf(__VA_ARGS__); \
puts(""); \
}
#else
#define DEBUG(...)
#endif
int MOD = 1e9 + 7;
void ADD(LL &x, LL v) {
x = (x + v) % MOD;
if (x < 0)
x += MOD;
}
/*}}}*/
const int SIZE = 1e6 + 10;
int N, K;
LL dp[2][26][6001];
int main() {
R(N, K);
{
int v = 0;
FOR(i, 1, N) { v += abs(N + 1 - i - i); }
if (K > v) {
W(0);
return 0;
}
}
int now = 0, nxt = 1;
dp[now][0][0] = 1;
for (int i = N; i > 0; i--) {
MS0(dp[nxt]);
REP(j, 26) REP(k, 6001) {
if (!dp[now][j][k])
continue;
ADD(dp[nxt][j][k], dp[now][j][k] * (1 + j * 2));
if (j)
ADD(dp[nxt][j - 1][k - 2 * i], dp[now][j][k] * j * j);
ADD(dp[nxt][j + 1][k + 2 * i], dp[now][j][k]);
}
swap(now, nxt);
}
W(dp[now][0][K]);
return 0;
}
| /*{{{*/
#include <algorithm>
#include <assert.h>
#include <bitset>
#include <cmath>
#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <iostream>
#include <limits.h>
#include <map>
#include <queue>
#include <set>
#include <sstream>
#include <string>
#include <vector>
#define SZ(X) ((int)(X).size())
#define ALL(X) (X).begin(), (X).end()
#define REP(I, N) for (int I = 0; I < (N); ++I)
#define REPP(I, A, B) for (int I = (A); I < (B); ++I)
#define FOR(I, A, B) for (int I = (A); I <= (B); ++I)
#define FORS(I, S) for (int I = 0; S[I]; ++I)
#define RS(X) scanf("%s", (X))
#define SORT_UNIQUE(c) \
(sort(c.begin(), c.end()), \
c.resize(distance(c.begin(), unique(c.begin(), c.end()))))
#define GET_POS(c, x) (lower_bound(c.begin(), c.end(), x) - c.begin())
#define CASET \
int ___T; \
scanf("%d", &___T); \
for (int cs = 1; cs <= ___T; cs++)
#define MP make_pair
#define PB push_back
#define MS0(X) memset((X), 0, sizeof((X)))
#define MS1(X) memset((X), -1, sizeof((X)))
#define LEN(X) strlen(X)
#define F first
#define S second
using namespace std;
typedef long long LL;
typedef unsigned long long ULL;
typedef long double LD;
typedef pair<int, int> PII;
typedef vector<int> VI;
typedef vector<LL> VL;
typedef vector<PII> VPII;
typedef pair<LL, LL> PLL;
typedef vector<PLL> VPLL;
template <class T> void _R(T &x) { cin >> x; }
void _R(int &x) { scanf("%d", &x); }
void _R(LL &x) { scanf("%lld", &x); }
void _R(double &x) { scanf("%lf", &x); }
void _R(char &x) { scanf(" %c", &x); }
void _R(char *x) { scanf("%s", x); }
void R() {}
template <class T, class... U> void R(T &head, U &...tail) {
_R(head);
R(tail...);
}
template <class T> void _W(const T &x) { cout << x; }
void _W(const int &x) { printf("%d", x); }
void _W(const LL &x) { printf("%lld", x); }
void _W(const double &x) { printf("%.16f", x); }
void _W(const char &x) { putchar(x); }
void _W(const char *x) { printf("%s", x); }
template <class T, class U> void _W(const pair<T, U> &x) {
_W(x.F);
putchar(' ');
_W(x.S);
}
template <class T> void _W(const vector<T> &x) {
for (auto i = x.begin(); i != x.end(); _W(*i++))
if (i != x.cbegin())
putchar(' ');
}
void W() {}
template <class T, class... U> void W(const T &head, const U &...tail) {
_W(head);
putchar(sizeof...(tail) ? ' ' : '\n');
W(tail...);
}
#ifdef HOME
#define DEBUG(...) \
{ \
printf("# "); \
printf(__VA_ARGS__); \
puts(""); \
}
#else
#define DEBUG(...)
#endif
int MOD = 1e9 + 7;
void ADD(LL &x, LL v) {
x = (x + v) % MOD;
if (x < 0)
x += MOD;
}
/*}}}*/
const int SIZE = 1e6 + 10;
int N, K;
LL dp[2][26][6001];
int main() {
R(N, K);
{
int v = 0;
FOR(i, 1, N) { v += abs(N + 1 - i - i); }
if (K > v) {
W(0);
return 0;
}
}
int now = 0, nxt = 1;
dp[now][0][0] = 1;
for (int i = N; i > 0; i--) {
MS0(dp[nxt]);
REP(j, 26) REP(k, 6001) {
if (!dp[now][j][k])
continue;
ADD(dp[nxt][j][k], dp[now][j][k] * (1 + j * 2));
if (j)
ADD(dp[nxt][j - 1][k - 2 * i], dp[now][j][k] * j * j);
if (j < 25)
ADD(dp[nxt][j + 1][k + 2 * i], dp[now][j][k]);
}
swap(now, nxt);
}
W(dp[now][0][K]);
return 0;
}
| replace | 121 | 122 | 121 | 123 | 0 | |
p02974 | C++ | Runtime Error | #include <bits/stdc++.h>
using namespace std;
typedef long long ll;
const ll MOD = 1e9 + 7;
template <class T> inline bool chmin(T &a, T b) {
if (a > b) {
a = b;
return true;
}
return false;
}
template <class T> inline bool chmax(T &a, T b) {
if (a < b) {
a = b;
return true;
}
return false;
}
template <uint_fast64_t Modulus> class modint {
using u64 = uint_fast64_t;
public:
u64 a;
constexpr modint(const u64 x = 0) noexcept
: a(((x % Modulus) + Modulus) % Modulus) {}
constexpr u64 &value() noexcept { return a; }
constexpr const u64 &value() const noexcept { return a; }
constexpr modint &operator+=(const modint &rhs) noexcept {
a += rhs.a;
if (a >= Modulus)
a -= Modulus;
return *this;
}
constexpr modint operator+(const modint &rhs) const noexcept {
return modint(*this) += rhs;
}
constexpr modint &operator++() noexcept { return ++a, *this; }
constexpr modint operator++(int) noexcept {
modint t = *this;
return ++a, t;
}
constexpr modint &operator-=(const modint &rhs) noexcept {
if (a < rhs.a)
a += Modulus;
a -= rhs.a;
return *this;
}
constexpr modint operator-(const modint &rhs) const noexcept {
return modint(*this) -= rhs;
}
constexpr modint &operator--() noexcept { return --a, *this; }
constexpr modint operator--(int) noexcept {
modint t = *this;
return --a, t;
}
constexpr modint &operator*=(const modint &rhs) noexcept {
a = a * rhs.a % Modulus;
return *this;
}
constexpr modint operator*(const modint &rhs) const noexcept {
return modint(*this) *= rhs;
}
constexpr modint &operator/=(modint rhs) noexcept {
u64 exp = Modulus - 2;
while (exp) {
if (exp & 1)
*this *= rhs;
rhs *= rhs;
exp >>= 1;
}
return *this;
}
constexpr modint operator/(const modint &rhs) const noexcept {
return modint(*this) /= rhs;
}
constexpr modint operator-() const noexcept { return modint(Modulus - a); }
constexpr bool operator==(const modint &rhs) const noexcept {
return a == rhs.a;
}
constexpr bool operator!=(const modint &rhs) const noexcept {
return a != rhs.a;
}
constexpr bool operator!() const noexcept { return !a; }
friend constexpr modint pow(modint rhs, long long exp) noexcept {
modint res{1};
while (exp) {
if (exp & 1)
res *= rhs;
rhs *= rhs;
exp >>= 1;
}
return res;
}
template <class T> friend constexpr modint operator+(T x, modint y) noexcept {
return modint(x) + y;
}
template <class T> friend constexpr modint operator-(T x, modint y) noexcept {
return modint(x) - y;
}
template <class T> friend constexpr modint operator*(T x, modint y) noexcept {
return modint(x) * y;
}
template <class T> friend constexpr modint operator/(T x, modint y) noexcept {
return modint(x) / y;
}
friend ostream &operator<<(ostream &s, const modint &rhs) noexcept {
return s << rhs.a;
}
friend istream &operator>>(istream &s, modint &rhs) noexcept {
u64 a;
rhs = modint{(s >> a, a)};
return s;
}
};
using mint = modint<MOD>;
int main() {
cin.tie(0);
ios::sync_with_stdio(false);
int N, K;
cin >> N >> K;
mint dp[N + 1][N + 1][K + 1];
for (int i = 0; i < N + 1; ++i)
for (int j = 0; j < N + 1; ++j)
for (int k = 0; k < K + 1; ++k)
dp[i][j][k] = 0;
dp[0][0][0] = 1;
for (int i = 0; i < N; ++i) {
for (int j = 0; j < N + 1; ++j) {
for (int k = 0; j + k < K + 1; ++k) {
dp[i + 1][j][j + k] += dp[i][j][k] + dp[i][j][k] * j;
if (1 < j)
dp[i + 1][j - 2][j + k] += dp[i][j][k] * j * j / 4;
if (j < K - 1)
dp[i + 1][j + 2][j + k] += dp[i][j][k];
}
}
}
cout << dp[N][0][K] << endl;
} | #include <bits/stdc++.h>
using namespace std;
typedef long long ll;
const ll MOD = 1e9 + 7;
template <class T> inline bool chmin(T &a, T b) {
if (a > b) {
a = b;
return true;
}
return false;
}
template <class T> inline bool chmax(T &a, T b) {
if (a < b) {
a = b;
return true;
}
return false;
}
template <uint_fast64_t Modulus> class modint {
using u64 = uint_fast64_t;
public:
u64 a;
constexpr modint(const u64 x = 0) noexcept
: a(((x % Modulus) + Modulus) % Modulus) {}
constexpr u64 &value() noexcept { return a; }
constexpr const u64 &value() const noexcept { return a; }
constexpr modint &operator+=(const modint &rhs) noexcept {
a += rhs.a;
if (a >= Modulus)
a -= Modulus;
return *this;
}
constexpr modint operator+(const modint &rhs) const noexcept {
return modint(*this) += rhs;
}
constexpr modint &operator++() noexcept { return ++a, *this; }
constexpr modint operator++(int) noexcept {
modint t = *this;
return ++a, t;
}
constexpr modint &operator-=(const modint &rhs) noexcept {
if (a < rhs.a)
a += Modulus;
a -= rhs.a;
return *this;
}
constexpr modint operator-(const modint &rhs) const noexcept {
return modint(*this) -= rhs;
}
constexpr modint &operator--() noexcept { return --a, *this; }
constexpr modint operator--(int) noexcept {
modint t = *this;
return --a, t;
}
constexpr modint &operator*=(const modint &rhs) noexcept {
a = a * rhs.a % Modulus;
return *this;
}
constexpr modint operator*(const modint &rhs) const noexcept {
return modint(*this) *= rhs;
}
constexpr modint &operator/=(modint rhs) noexcept {
u64 exp = Modulus - 2;
while (exp) {
if (exp & 1)
*this *= rhs;
rhs *= rhs;
exp >>= 1;
}
return *this;
}
constexpr modint operator/(const modint &rhs) const noexcept {
return modint(*this) /= rhs;
}
constexpr modint operator-() const noexcept { return modint(Modulus - a); }
constexpr bool operator==(const modint &rhs) const noexcept {
return a == rhs.a;
}
constexpr bool operator!=(const modint &rhs) const noexcept {
return a != rhs.a;
}
constexpr bool operator!() const noexcept { return !a; }
friend constexpr modint pow(modint rhs, long long exp) noexcept {
modint res{1};
while (exp) {
if (exp & 1)
res *= rhs;
rhs *= rhs;
exp >>= 1;
}
return res;
}
template <class T> friend constexpr modint operator+(T x, modint y) noexcept {
return modint(x) + y;
}
template <class T> friend constexpr modint operator-(T x, modint y) noexcept {
return modint(x) - y;
}
template <class T> friend constexpr modint operator*(T x, modint y) noexcept {
return modint(x) * y;
}
template <class T> friend constexpr modint operator/(T x, modint y) noexcept {
return modint(x) / y;
}
friend ostream &operator<<(ostream &s, const modint &rhs) noexcept {
return s << rhs.a;
}
friend istream &operator>>(istream &s, modint &rhs) noexcept {
u64 a;
rhs = modint{(s >> a, a)};
return s;
}
};
using mint = modint<MOD>;
int main() {
cin.tie(0);
ios::sync_with_stdio(false);
int N, K;
cin >> N >> K;
mint dp[N + 1][N + 1][K + 1];
for (int i = 0; i < N + 1; ++i)
for (int j = 0; j < N + 1; ++j)
for (int k = 0; k < K + 1; ++k)
dp[i][j][k] = 0;
dp[0][0][0] = 1;
for (int i = 0; i < N; ++i) {
for (int j = 0; j < N + 1; ++j) {
for (int k = 0; j + k < K + 1; ++k) {
dp[i + 1][j][j + k] += dp[i][j][k] + dp[i][j][k] * j;
if (1 < j)
dp[i + 1][j - 2][j + k] += dp[i][j][k] * j * j / 4;
if (j < N - 1)
dp[i + 1][j + 2][j + k] += dp[i][j][k];
}
}
}
cout << dp[N][0][K] << endl;
} | replace | 136 | 137 | 136 | 137 | 0 | |
p02974 | C++ | Runtime Error | #include <bits/stdc++.h>
using namespace std;
using ll = long long;
int main() {
cin.tie(0);
ios::sync_with_stdio(false);
const ll MOD = 1e9 + 7;
ll N, K;
cin >> N >> K;
vector<vector<vector<ll>>> dp(N + 1,
vector<vector<ll>>(N + 1, vector<ll>(K + 1)));
dp[0][0][0] = 1;
for (int i = 1; i <= N; ++i) {
for (int j = 0; j <= i; ++j) {
for (int k = 2 * j; k <= K; ++k) {
ll &v = dp[i][j][k];
(v += (2 * j + 1) * dp[i - 1][j][k - 2 * j]) %= MOD;
(v += (j + 1) * (j + 1) * dp[i - 1][j + 1][k - 2 * j]) %= MOD;
if (0 <= j - 1)
(v += dp[i - 1][j - 1][k - 2 * j]) %= MOD;
}
}
}
cout << dp[N][0][K] << endl;
return 0;
}
| #include <bits/stdc++.h>
using namespace std;
using ll = long long;
int main() {
cin.tie(0);
ios::sync_with_stdio(false);
const ll MOD = 1e9 + 7;
ll N, K;
cin >> N >> K;
vector<vector<vector<ll>>> dp(N + 1,
vector<vector<ll>>(N + 2, vector<ll>(K + 1)));
dp[0][0][0] = 1;
for (int i = 1; i <= N; ++i) {
for (int j = 0; j <= i; ++j) {
for (int k = 2 * j; k <= K; ++k) {
ll &v = dp[i][j][k];
(v += (2 * j + 1) * dp[i - 1][j][k - 2 * j]) %= MOD;
(v += (j + 1) * (j + 1) * dp[i - 1][j + 1][k - 2 * j]) %= MOD;
if (0 <= j - 1)
(v += dp[i - 1][j - 1][k - 2 * j]) %= MOD;
}
}
}
cout << dp[N][0][K] << endl;
return 0;
}
| replace | 16 | 17 | 16 | 17 | 0 | |
p02974 | C++ | Runtime Error | #include <iostream>
using namespace std;
const int mod = (int)1e9 + 7;
inline void addmod(int &a, int b) {
a += b;
a %= mod;
}
int main() {
const int mid = 1300;
static int pdp[2501][51] = {}, dp[2501][51] = {};
int n, k;
cin >> n >> k;
if (k % 2 != 0) {
cout << 0 << endl;
cerr << "bad" << endl;
return 0;
}
k /= 2;
dp[mid][0] = 1;
int mxSum = n * (n - 1) / 2;
int lSum = mid - mxSum, rSum = mid + mxSum;
for (int step = 0; step < n; ++step) {
for (int sum = lSum; sum <= rSum; ++sum) {
for (int p = 0; p <= step; ++p) {
pdp[sum][p] = dp[sum][p];
dp[sum][p] = 0;
}
}
for (int sum = lSum; sum <= rSum; ++sum) {
for (int p = 0; p <= step; ++p) {
if (!pdp[sum][p]) {
continue;
}
int64_t val = pdp[sum][p];
// place is L, item is L
addmod(dp[sum][p], val * (p + 1) % mod);
// place is L, item is S
addmod(dp[sum - step][p + 1], val);
// place is S, item is L
if (p)
addmod(dp[sum + step][p - 1], val * p * p % mod);
// place is S, item is S
if (p)
addmod(dp[sum][p], val * p % mod);
}
}
}
cout << dp[k + mid][0] << endl;
return 0;
}
| #include <iostream>
using namespace std;
const int mod = (int)1e9 + 7;
inline void addmod(int &a, int b) {
a += b;
a %= mod;
}
int main() {
const int mid = 1300;
static int pdp[2601][51] = {}, dp[2601][51] = {};
int n, k;
cin >> n >> k;
if (k % 2 != 0) {
cout << 0 << endl;
cerr << "bad" << endl;
return 0;
}
k /= 2;
dp[mid][0] = 1;
int mxSum = n * (n - 1) / 2;
int lSum = mid - mxSum, rSum = mid + mxSum;
for (int step = 0; step < n; ++step) {
for (int sum = lSum; sum <= rSum; ++sum) {
for (int p = 0; p <= step; ++p) {
pdp[sum][p] = dp[sum][p];
dp[sum][p] = 0;
}
}
for (int sum = lSum; sum <= rSum; ++sum) {
for (int p = 0; p <= step; ++p) {
if (!pdp[sum][p]) {
continue;
}
int64_t val = pdp[sum][p];
// place is L, item is L
addmod(dp[sum][p], val * (p + 1) % mod);
// place is L, item is S
addmod(dp[sum - step][p + 1], val);
// place is S, item is L
if (p)
addmod(dp[sum + step][p - 1], val * p * p % mod);
// place is S, item is S
if (p)
addmod(dp[sum][p], val * p % mod);
}
}
}
cout << dp[k + mid][0] << endl;
return 0;
}
| replace | 13 | 14 | 13 | 14 | 0 | |
p02974 | C++ | Runtime Error | #include <algorithm>
#include <iostream>
using namespace std;
typedef long long ll;
ll dp[50][50][50 * 50 + 1]; // dp[i][j][k] :=
// i番目まで見て、jこずつ添え字と数字を保留してる（互いに同じ個数となるようにしか保留ができない）とき、
// 確定してる奇妙さがkのときの場合の数
int N, K;
const ll MOD = 1000000007;
int main() {
cin >> N >> K;
dp[0][0][0] = 1;
for (int i = 0; i < N; i++) {
for (int j = 0; j < N; j++) {
for (int k = 0; k <= N * N; k++) {
dp[i][j][k] %= MOD;
// 今見てる数字と添え字同士がそのままマッチングされるとき
if (k + 2 * j <= N * N)
dp[i + 1][j][k + 2 * j] += dp[i][j][k];
// 今見てる数字と添え字どちらも保留とする。つまり、0~i(0-idx)番目までにマッチングさせないとき
if (k + 2 * (j + 1) <= N * N && j <= N - 2)
dp[i + 1][j + 1][k + 2 * (j + 1)] += dp[i][j][k];
// 今見てる数字と添え字で、数字は保留された添え字とマッチングし、添え字はそのまま保留するとき
// 今見てる数字と添え字で、添え字は保留された数字とマッチングし、数字はそのまま保留するとき
// この二つは数字と添え字の保留数はかならず同じになる性質上、同じ式でまとめることができる。
// お互い、保留された数字(or添え字)とマッチングする際に、j通りある相手のうちどれを選んでもいい。
if (k + 2 * j <= N * N)
dp[i + 1][j][k + 2 * j] += dp[i][j][k] * 2 * j;
// 今見てる数字と添え字で、数字は保留された添え字とマッチング、添え字は保留された数字とマッチングするとき
// 保留されてる数字と添え字は一つずつ減る。また、上のパターンと同様に、お互い保留されたものとはj通りの選び方があるので、
// j*j倍される。
if (k + 2 * (j - 1) <= N * N && j - 1 >= 0)
dp[i + 1][j - 1][k + 2 * (j - 1)] += dp[i][j][k] * j * j;
}
}
}
cout << dp[N][0][K] % MOD << endl;
return 0;
} | #include <algorithm>
#include <iostream>
using namespace std;
typedef long long ll;
ll dp[51][51][50 * 50 + 1]; // dp[i][j][k] :=
// i番目まで見て、jこずつ添え字と数字を保留してる（互いに同じ個数となるようにしか保留ができない）とき、
// 確定してる奇妙さがkのときの場合の数
int N, K;
const ll MOD = 1000000007;
int main() {
cin >> N >> K;
dp[0][0][0] = 1;
for (int i = 0; i < N; i++) {
for (int j = 0; j < N; j++) {
for (int k = 0; k <= N * N; k++) {
dp[i][j][k] %= MOD;
// 今見てる数字と添え字同士がそのままマッチングされるとき
if (k + 2 * j <= N * N)
dp[i + 1][j][k + 2 * j] += dp[i][j][k];
// 今見てる数字と添え字どちらも保留とする。つまり、0~i(0-idx)番目までにマッチングさせないとき
if (k + 2 * (j + 1) <= N * N && j <= N - 2)
dp[i + 1][j + 1][k + 2 * (j + 1)] += dp[i][j][k];
// 今見てる数字と添え字で、数字は保留された添え字とマッチングし、添え字はそのまま保留するとき
// 今見てる数字と添え字で、添え字は保留された数字とマッチングし、数字はそのまま保留するとき
// この二つは数字と添え字の保留数はかならず同じになる性質上、同じ式でまとめることができる。
// お互い、保留された数字(or添え字)とマッチングする際に、j通りある相手のうちどれを選んでもいい。
if (k + 2 * j <= N * N)
dp[i + 1][j][k + 2 * j] += dp[i][j][k] * 2 * j;
// 今見てる数字と添え字で、数字は保留された添え字とマッチング、添え字は保留された数字とマッチングするとき
// 保留されてる数字と添え字は一つずつ減る。また、上のパターンと同様に、お互い保留されたものとはj通りの選び方があるので、
// j*j倍される。
if (k + 2 * (j - 1) <= N * N && j - 1 >= 0)
dp[i + 1][j - 1][k + 2 * (j - 1)] += dp[i][j][k] * j * j;
}
}
}
cout << dp[N][0][K] % MOD << endl;
return 0;
} | replace | 6 | 7 | 6 | 7 | 0 | |
p02974 | C++ | Runtime Error | #include <bits/stdc++.h>
using namespace std;
int n, kk;
long long mod = 1e9 + 7;
long long d[51][51][2800];
int main() {
ios_base::sync_with_stdio(false);
cin.tie(NULL);
cout.tie(NULL);
cin >> n >> kk;
d[0][0][0] = 1;
for (int i = 0; i < n; i++) {
for (int j = 0; j <= n; j++) {
for (int k = 0; k <= kk + 1; k++) {
d[i + 1][j][k + j * 2] += d[i][j][k];
d[i + 1][j][k + j * 2] %= mod;
if (j - 1 >= 0) {
d[i + 1][j - 1][k + (j - 1) * 2] += (d[i][j][k] * j * j);
d[i + 1][j - 1][k + (j - 1) * 2] %= mod;
}
d[i + 1][j][k + j * 2] += d[i][j][k] * (2 * j);
d[i + 1][j][k + j * 2] %= mod;
d[i + 1][j + 1][k + (j + 1) * 2] += d[i][j][k];
d[i + 1][j + 1][k + (j + 1) * 2] %= mod;
}
}
}
cout << d[n][0][kk] % mod << '\n';
} | #include <bits/stdc++.h>
using namespace std;
int n, kk;
long long mod = 1e9 + 7;
long long d[52][52][5000];
int main() {
ios_base::sync_with_stdio(false);
cin.tie(NULL);
cout.tie(NULL);
cin >> n >> kk;
d[0][0][0] = 1;
for (int i = 0; i < n; i++) {
for (int j = 0; j <= n; j++) {
for (int k = 0; k <= kk + 1; k++) {
d[i + 1][j][k + j * 2] += d[i][j][k];
d[i + 1][j][k + j * 2] %= mod;
if (j - 1 >= 0) {
d[i + 1][j - 1][k + (j - 1) * 2] += (d[i][j][k] * j * j);
d[i + 1][j - 1][k + (j - 1) * 2] %= mod;
}
d[i + 1][j][k + j * 2] += d[i][j][k] * (2 * j);
d[i + 1][j][k + j * 2] %= mod;
d[i + 1][j + 1][k + (j + 1) * 2] += d[i][j][k];
d[i + 1][j + 1][k + (j + 1) * 2] %= mod;
}
}
}
cout << d[n][0][kk] % mod << '\n';
} | replace | 5 | 6 | 5 | 6 | 0 | |
p02974 | C++ | Runtime Error | #include <bits/stdc++.h>
using namespace std;
#define int long long
// #define double long double
#define FOR(i, a, b) for (int i = (a); i < (b); ++i)
#define FORR(i, a, b) for (int i = (a); i > (b); --i)
#define REP(i, n) for (int i = 0; i < (n); ++i)
#define REPR(i, n) for (int i = n; i >= 0; i--)
#define FOREACH(x, a) for (auto &(x) : (a))
#define VECCIN(x) \
for (auto &youso_ : (x)) \
cin >> youso_
#define bitcnt(x) __builtin_popcount(x)
#define lbit(x) __builtin_ffsll(x)
#define rbit(x) __builtin_clzll(x)
#define SZ(x) ((long long)(x).size())
#define fi first
#define se second
#define All(a) (a).begin(), (a).end()
#define rAll(a) (a).rbegin(), (a).rend()
#define cinfast() cin.tie(0), ios::sync_with_stdio(false)
#define PERM(c) \
sort(All(c)); \
for (bool cp = true; cp; cp = next_permutation(All(c)))
#define MKORDER(n) \
vector<int> od(n); \
iota(All(od), 0LL);
template <typename T = long long> inline T IN() {
T x;
cin >> x;
return (x);
}
inline void CIN() {}
template <class Head, class... Tail>
inline void CIN(Head &&head, Tail &&...tail) {
cin >> head;
CIN(move(tail)...);
}
#define CCIN(...) \
char __VA_ARGS__; \
CIN(__VA_ARGS__)
#define DCIN(...) \
double __VA_ARGS__; \
CIN(__VA_ARGS__)
#define LCIN(...) \
long long __VA_ARGS__; \
CIN(__VA_ARGS__)
#define SCIN(...) \
string __VA_ARGS__; \
CIN(__VA_ARGS__)
#define Yes(a) cout << (a ? "Yes" : "No") << "\n"
#define YES(a) cout << (a ? "YES" : "NO") << "\n"
#define Printv(v) \
{ \
FOREACH(x, v) { cout << x << " "; } \
cout << "\n"; \
}
template <typename T = string> inline void eputs(T s) {
cout << s << "\n";
exit(0);
}
template <typename A, size_t N, typename T>
void Fill(A (&array)[N], const T &val) {
std::fill((T *)array, (T *)(array + N), val);
}
template <typename T> using PQG = priority_queue<T, vector<T>, greater<T>>;
template <typename T> using PQ = priority_queue<T>;
typedef long long ll;
typedef vector<ll> VL;
typedef vector<VL> VVL;
typedef pair<ll, ll> PL;
typedef vector<PL> VPL;
typedef vector<bool> VB;
typedef vector<double> VD;
typedef vector<string> VS;
const int INF = 1e9;
const int MOD = 1e9 + 7;
// const int MOD = 998244353;
const ll LINF = 1e18;
const double PI = atan(1.0) * 4.0;
const ll dw[] = {1, 1, 0, -1, -1, -1, 0, 1};
const ll dh[] = {0, 1, 1, 1, 0, -1, -1, -1};
#define PI 3.141592653589793238
// 1000000007 で割ったあまりを扱う構造体
template <int MOD> struct Fp {
long long val;
constexpr Fp(long long v = 0) noexcept : val(v % MOD) {
if (val < 0)
v += MOD;
}
constexpr int getmod() { return MOD; }
constexpr Fp operator-() const noexcept { return val ? MOD - val : 0; }
constexpr Fp operator+(const Fp &r) const noexcept { return Fp(*this) += r; }
constexpr Fp operator-(const Fp &r) const noexcept { return Fp(*this) -= r; }
constexpr Fp operator*(const Fp &r) const noexcept { return Fp(*this) *= r; }
constexpr Fp operator/(const Fp &r) const noexcept { return Fp(*this) /= r; }
constexpr Fp &operator+=(const Fp &r) noexcept {
val += r.val;
if (val >= MOD)
val -= MOD;
return *this;
}
constexpr Fp &operator-=(const Fp &r) noexcept {
val -= r.val;
if (val < 0)
val += MOD;
return *this;
}
constexpr Fp &operator*=(const Fp &r) noexcept {
val = val * r.val % MOD;
return *this;
}
constexpr Fp &operator/=(const Fp &r) noexcept {
long long a = r.val, b = MOD, u = 1, v = 0;
while (b) {
long long t = a / b;
a -= t * b;
swap(a, b);
u -= t * v;
swap(u, v);
}
val = val * u % MOD;
if (val < 0)
val += MOD;
return *this;
}
constexpr bool operator==(const Fp &r) const noexcept {
return this->val == r.val;
}
constexpr bool operator!=(const Fp &r) const noexcept {
return this->val != r.val;
}
friend constexpr ostream &operator<<(ostream &os, const Fp<MOD> &x) noexcept {
return os << x.val;
}
friend constexpr istream &operator>>(istream &is, Fp<MOD> &x) noexcept {
return is >> x.val;
}
friend constexpr Fp<MOD> modpow(const Fp<MOD> &a, long long n) noexcept {
if (n == 0)
return 1;
auto t = modpow(a, n / 2);
t = t * t;
if (n & 1)
t = t * a;
return t;
}
};
using mint = Fp<MOD>;
mint dp[2][51][2505];
signed main() {
cinfast();
LCIN(N, K);
ll now = 0, next = 1;
dp[now][0][0] = 1;
REP(i, N) {
Fill(dp[next], 0);
REP(j, N + 1) FOR(k, 2 * j, K + 1) {
// 両方保留
if (j)
dp[next][j][k] += dp[now][j - 1][k - 2 * j];
// 保留箱に入れるかつ保留ボールを入れる
dp[next][j][k] += (mint)(j + 1) * (j + 1) * dp[now][j + 1][k - 2 * j];
// 保留箱に入れるまたは保留ボールを入れる
dp[next][j][k] += (mint)(2 * j + 1) * dp[now][j][k - 2 * j];
}
swap(now, next);
}
cout << dp[now][0][K] << "\n";
}
| #include <bits/stdc++.h>
using namespace std;
#define int long long
// #define double long double
#define FOR(i, a, b) for (int i = (a); i < (b); ++i)
#define FORR(i, a, b) for (int i = (a); i > (b); --i)
#define REP(i, n) for (int i = 0; i < (n); ++i)
#define REPR(i, n) for (int i = n; i >= 0; i--)
#define FOREACH(x, a) for (auto &(x) : (a))
#define VECCIN(x) \
for (auto &youso_ : (x)) \
cin >> youso_
#define bitcnt(x) __builtin_popcount(x)
#define lbit(x) __builtin_ffsll(x)
#define rbit(x) __builtin_clzll(x)
#define SZ(x) ((long long)(x).size())
#define fi first
#define se second
#define All(a) (a).begin(), (a).end()
#define rAll(a) (a).rbegin(), (a).rend()
#define cinfast() cin.tie(0), ios::sync_with_stdio(false)
#define PERM(c) \
sort(All(c)); \
for (bool cp = true; cp; cp = next_permutation(All(c)))
#define MKORDER(n) \
vector<int> od(n); \
iota(All(od), 0LL);
template <typename T = long long> inline T IN() {
T x;
cin >> x;
return (x);
}
inline void CIN() {}
template <class Head, class... Tail>
inline void CIN(Head &&head, Tail &&...tail) {
cin >> head;
CIN(move(tail)...);
}
#define CCIN(...) \
char __VA_ARGS__; \
CIN(__VA_ARGS__)
#define DCIN(...) \
double __VA_ARGS__; \
CIN(__VA_ARGS__)
#define LCIN(...) \
long long __VA_ARGS__; \
CIN(__VA_ARGS__)
#define SCIN(...) \
string __VA_ARGS__; \
CIN(__VA_ARGS__)
#define Yes(a) cout << (a ? "Yes" : "No") << "\n"
#define YES(a) cout << (a ? "YES" : "NO") << "\n"
#define Printv(v) \
{ \
FOREACH(x, v) { cout << x << " "; } \
cout << "\n"; \
}
template <typename T = string> inline void eputs(T s) {
cout << s << "\n";
exit(0);
}
template <typename A, size_t N, typename T>
void Fill(A (&array)[N], const T &val) {
std::fill((T *)array, (T *)(array + N), val);
}
template <typename T> using PQG = priority_queue<T, vector<T>, greater<T>>;
template <typename T> using PQ = priority_queue<T>;
typedef long long ll;
typedef vector<ll> VL;
typedef vector<VL> VVL;
typedef pair<ll, ll> PL;
typedef vector<PL> VPL;
typedef vector<bool> VB;
typedef vector<double> VD;
typedef vector<string> VS;
const int INF = 1e9;
const int MOD = 1e9 + 7;
// const int MOD = 998244353;
const ll LINF = 1e18;
const double PI = atan(1.0) * 4.0;
const ll dw[] = {1, 1, 0, -1, -1, -1, 0, 1};
const ll dh[] = {0, 1, 1, 1, 0, -1, -1, -1};
#define PI 3.141592653589793238
// 1000000007 で割ったあまりを扱う構造体
template <int MOD> struct Fp {
long long val;
constexpr Fp(long long v = 0) noexcept : val(v % MOD) {
if (val < 0)
v += MOD;
}
constexpr int getmod() { return MOD; }
constexpr Fp operator-() const noexcept { return val ? MOD - val : 0; }
constexpr Fp operator+(const Fp &r) const noexcept { return Fp(*this) += r; }
constexpr Fp operator-(const Fp &r) const noexcept { return Fp(*this) -= r; }
constexpr Fp operator*(const Fp &r) const noexcept { return Fp(*this) *= r; }
constexpr Fp operator/(const Fp &r) const noexcept { return Fp(*this) /= r; }
constexpr Fp &operator+=(const Fp &r) noexcept {
val += r.val;
if (val >= MOD)
val -= MOD;
return *this;
}
constexpr Fp &operator-=(const Fp &r) noexcept {
val -= r.val;
if (val < 0)
val += MOD;
return *this;
}
constexpr Fp &operator*=(const Fp &r) noexcept {
val = val * r.val % MOD;
return *this;
}
constexpr Fp &operator/=(const Fp &r) noexcept {
long long a = r.val, b = MOD, u = 1, v = 0;
while (b) {
long long t = a / b;
a -= t * b;
swap(a, b);
u -= t * v;
swap(u, v);
}
val = val * u % MOD;
if (val < 0)
val += MOD;
return *this;
}
constexpr bool operator==(const Fp &r) const noexcept {
return this->val == r.val;
}
constexpr bool operator!=(const Fp &r) const noexcept {
return this->val != r.val;
}
friend constexpr ostream &operator<<(ostream &os, const Fp<MOD> &x) noexcept {
return os << x.val;
}
friend constexpr istream &operator>>(istream &is, Fp<MOD> &x) noexcept {
return is >> x.val;
}
friend constexpr Fp<MOD> modpow(const Fp<MOD> &a, long long n) noexcept {
if (n == 0)
return 1;
auto t = modpow(a, n / 2);
t = t * t;
if (n & 1)
t = t * a;
return t;
}
};
using mint = Fp<MOD>;
mint dp[2][55][2555];
signed main() {
cinfast();
LCIN(N, K);
ll now = 0, next = 1;
dp[now][0][0] = 1;
REP(i, N) {
Fill(dp[next], 0);
REP(j, N + 1) FOR(k, 2 * j, K + 1) {
// 両方保留
if (j)
dp[next][j][k] += dp[now][j - 1][k - 2 * j];
// 保留箱に入れるかつ保留ボールを入れる
dp[next][j][k] += (mint)(j + 1) * (j + 1) * dp[now][j + 1][k - 2 * j];
// 保留箱に入れるまたは保留ボールを入れる
dp[next][j][k] += (mint)(2 * j + 1) * dp[now][j][k - 2 * j];
}
swap(now, next);
}
cout << dp[now][0][K] << "\n";
}
| replace | 158 | 159 | 158 | 159 | 0 | |
p02974 | C++ | Runtime Error | #include <bits/stdc++.h>
using namespace std;
#define FOR(i, m, n) for (int i = (m); i < (n); ++i)
#define REP(i, n) FOR(i, 0, n)
const int MOD = 1000000007;
int main() {
// freopen("input.txt", "r", stdin);
vector<int> sz{1, 2, 3, 5, 7, 10, 13, 17, 21, 26,
31, 37, 43, 50, 57, 65, 73, 82, 91, 101,
111, 122, 133, 145, 157, 170, 183, 197, 211, 226,
241, 257, 273, 290, 307, 325, 343, 362, 381, 401,
421, 442, 463, 485, 507, 530, 553, 577, 601, 626};
vector<long long> ans{
1, 1, 1, 1, 2, 3,
1, 3, 7, 9, 4, 1,
4, 12, 24, 35, 24, 20,
1, 5, 18, 46, 93, 137,
148, 136, 100, 36, 1, 6,
25, 76, 187, 366, 591, 744,
884, 832, 716, 360, 252, 1,
7, 33, 115, 327, 765, 1523,
2553, 3696, 4852, 5708, 5892, 5452,
4212, 2844, 1764, 576, 1, 8,
42, 164, 524, 1400, 3226, 6436,
11323, 17640, 25472, 33280, 40520, 44240,
45512, 40608, 35496, 25632, 18108, 8064,
5184, 1, 9, 52, 224, 790,
2350, 6072, 13768, 27821, 50461, 83420,
127840, 182256, 242272, 301648, 350864, 382576,
389232, 373536, 332640, 273060, 208548, 136512,
81792, 46656, 14400, 1, 10, 63,
296, 1138, 3708, 10538, 26480, 59673,
121626, 226787, 390144, 628744, 949472, 1355952,
1826464, 2341600, 2833632, 3282464, 3584160, 3765600,
3719664, 3531924, 3093336, 2642364, 2010240, 1508544,
963072, 621504, 259200, 158400, 1, 11,
75, 381, 1582, 5582, 17222, 47194,
116457, 261163, 537459, 1022981, 1817652, 3040352,
4810720, 7230928, 10360160, 14178912, 18577792, 23327872,
28132048, 32571504, 36310464, 38903904, 40028724, 39552156,
37457388, 33941412, 29314944, 24179904, 18835776, 13777344,
9452736, 5716800, 3211200, 1742400, 518400, 1,
12, 88, 480, 2137, 8096, 26860,
79376, 211811, 515308, 1153268, 2391936, 4633331,
8438664, 14557048, 23874176, 37407760, 56117824, 80906752,
112162240, 150052400, 193572736, 241706624, 291576384, 341323776,
386160048, 424359540, 450394992, 464545584, 461528208, 446428476,
413557632, 373573440, 321120000, 268449408, 210332160, 162330624,
112550400, 77788800, 46540800, 28497600, 11404800, 6739200,
1, 13, 102, 594, 2819, 11391,
40344, 127508, 364587, 952559, 2293742, 5126898,
10710633, 21042989, 39117852, 69175664, 116857024, 189256368,
294745440, 442503456, 641759376, 900689616, 225195321, 617201401,
74227554, 586823330, 140227131, 711888699, 274217080, 795069832,
242715461, 585116357, 796764497, 861974465, 769155485, 525176285,
146566301, 650715556, 73773796, 455145195, 828946802, 226153586,
685663993, 216281593, 828705600, 536385600, 309484800, 166924800,
87609600, 25401600, 1, 14, 117, 724,
3645, 15626, 58741, 197280, 600215, 1671266,
4295107, 10259436, 22922995, 48184950, 95816051, 181136304,
327071752, 566117888, 942525072, 513281017, 349163810, 532145419,
154557773, 309226767, 88509354, 563257605, 789064441, 766807654,
474675580, 795689314, 599134613, 627066840, 658988947, 307608398,
337632800, 295701193, 44870369, 150212311, 705302359, 336038622,
452522163, 797367958, 62674553, 57993322, 777736994, 845298906,
452367755, 90655804, 810196653, 976943895, 564798323, 582118351,
994783972, 869862386, 697759993, 660441600, 381024000, 1,
15, 133, 871, 4633, 20979, 83313,
295803, 952299, 2809009, 7656027, 19414457, 46086247,
102967901, 217634463, 437195525, 838372452, 540635289, 722168530,
638311860, 640827391, 196046908, 898688562, 478199884, 793020369,
808862771, 562236075, 94791602, 385333320, 237794527, 197694759,
398043392, 504456766, 579736664, 78137089, 793367253, 961295251,
280517488, 179779783, 947563092, 901772777, 859566930, 199212409,
920781370, 362900807, 735004334, 297264154, 482748036, 653703312,
140400674, 623159781, 320434095, 373194802, 13313867, 205909676,
360223815, 570584277, 68075848, 372652149, 961247580, 23084534,
261139053, 151302323, 715359965, 625702393, 1, 16,
150, 1036, 5802, 27648, 115538, 431844,
1464468, 4554040, 13096378, 35069940, 87969166, 207781760,
464351910, 986188668, 998611836, 879505923, 237509223, 15110629,
621334822, 88677622, 257578542, 963016850, 235638961, 442107823,
429101453, 483004748, 329733855, 718448185, 266304376, 413950543,
256286771, 626720357, 318467482, 59069608, 81901162, 352730851,
104241055, 503595237, 956355036, 534522134, 457799859, 108929893,
887297322, 424614770, 265024591, 876853471, 515703045, 692038809,
210906163, 20070317, 468291405, 145357835, 797577421, 232358134,
747771239, 343859985, 833879609, 78548665, 289896769, 449285934,
313197004, 379603290, 397630660, 609910102, 442642726, 627950853,
722186028, 705163253, 998661511, 771071664, 636940611, 1,
17, 168, 1220, 7172, 35852, 157132,
616084, 2192506, 7159090, 21631676, 60902460, 160707468,
399489140, 939796228, 101060910, 481320121, 151453550, 952463061,
931694473, 957528293, 554162053, 990142499, 644946993, 651797781,
791594351, 556120466, 271969917, 107619398, 710253075, 280526462,
615698879, 99748930, 775178221, 257586036, 645364809, 806795120,
340635512, 801741075, 790520661, 68328385, 331513794, 351728404,
931812262, 91105169, 176869824, 445724501, 370449983, 359815736,
918724628, 869062973, 659791249, 657727222, 395793733, 32692523,
78858425, 151369211, 628504487, 842750087, 152091477, 889718876,
908002421, 944598446, 656459208, 712920845, 47550280, 92244967,
110652620, 951703750, 217822851, 901098263, 655149074, 861896271,
859184013, 992613245, 768042116, 807916959, 335381553, 909568095,
153171069, 827990317, 681893483, 1, 18, 187,
1424, 8764, 45832, 210072, 861400, 3206786,
10957868, 34666130, 102239488, 282743580, 736889224, 817936097,
262532028, 534038590, 412279142, 965109380, 86702267, 846482566,
945052509, 644517943, 548776024, 679330947, 152291502, 882910517,
188127435, 636778925, 902059202, 132531208, 193904122, 893705022,
246193070, 652079051, 958060250, 148697872, 504141990, 371410212,
807466717, 514477363, 565424570, 560794838, 11419155, 215137208,
665710713, 791504234, 359367396, 224050172, 509091270, 125989128,
782600310, 957126038, 667219607, 386301613, 605448653, 296557741,
618019404, 194294675, 222923480, 765962783, 743934970, 24324611,
512643153, 214242880, 286900578, 228877964, 91240846, 430467141,
533029377, 904804693, 373207899, 916503101, 83598539, 560288494,
363356684, 68282446, 152683809, 284461190, 124425011, 167972327,
428909487, 373215034, 420008537, 513304383, 874743039, 487193257,
97337408, 532639641, 184378261, 955976093, 1, 19,
207, 1649, 10600, 57852, 276620, 1183172,
4595034, 16384606, 54107670, 166643130, 481442164, 311240781,
381378831, 288429444, 380463632, 370477330, 171662912, 688513797,
626045604, 789881798, 844990830, 70546834, 230422087, 267733218,
970080423, 75064762, 104073936, 888990608, 393490487, 819401315,
362017415, 197941501, 97730360, 491049732, 790022455, 142301163,
381999002, 81566974, 255547256, 500580164, 503785886, 874661360,
953064009, 357278689, 416715628, 656421867, 311332859, 849655408,
575613107, 850236831, 533549113, 255339339, 611845477, 501164398,
135987981, 672393680, 678611757, 552403430, 470027818, 333312311,
203812034, 929380798, 133842121, 497262544, 839881753, 29703780,
133717366, 249364505, 959337844, 632980495, 72879056, 356819838,
662140760, 182352973, 260787823, 329159184, 423643610, 488600943,
164109163, 8143787, 184454683, 684285006, 693158498, 382122550,
488552031, 777204359, 564238497, 598675373, 603916585, 720234840,
93182262, 238936257, 486420235, 352604922, 958291193, 880928218,
736558676, 163545641, 189347824, 1, 20, 228,
1896, 12703, 72200, 359348, 1599616, 6465450,
23997032, 82508708, 264654080, 796563486, 260832418, 76986106,
528774007, 854313906, 307546108, 722735109, 61004626, 805619536,
18191861, 511411798, 993782454, 401030744, 633897378, 70862649,
96855526, 314416445, 92910833, 135520920, 492052755, 24334887,
643976444, 574388511, 317610455, 122930943, 637889505, 255461238,
950861369, 48876234, 149504663, 198682481, 942670278, 866921314,
563621302, 960474580, 980132644, 624295523, 399490883, 351714973,
945626033, 827908349, 157456205, 481861323, 472454109, 343580291,
683697065, 95059407, 841332348, 464714941, 596887160, 38681949,
757883329, 590303711, 64921694, 730086270, 15240461, 714742087,
32874447, 175996750, 277466516, 788882909, 11880203, 95097385,
778398376, 531252352, 479554466, 557013590, 609738833, 798714176,
859324339, 721484640, 268442938, 861267595, 806087188, 31691029,
950412807, 580575404, 849451646, 691790951, 264837637, 967322620,
365040170, 622467624, 456436788, 658680316, 60575186, 387550026,
215002020, 31349904, 449373833, 559514745, 640364153, 807042078,
450172023, 562637973, 109112418, 545193132, 195217263, 976304283,
1, 21, 250, 2166, 15097, 89189,
461164, 2132144, 8950214, 34503182, 123236828, 410729140,
284813823, 790835929, 594736274, 153822108, 374418504, 157537842,
147846917, 133568389, 483576696, 508616649, 656867821, 84463125,
640047601, 955370715, 182167616, 49108700, 229345632, 795610484,
502493987, 857101031, 142485158, 996679960, 742503997, 723858587,
317526153, 365342533, 250775491, 442738912, 408346120, 881242865,
135363327, 231979623, 347291745, 824934645, 995772018, 164592917,
354883487, 450805745, 963969802, 171006181, 92161176, 169883419,
961669090, 26844445, 393784092, 571606470, 464707158, 34144520,
652396373, 745405475, 202923498, 135935314, 703695236, 776259115,
48310283, 874186699, 219390686, 510394758, 751965065, 418424556,
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551343042, 374674126, 67456147, 355451755, 309520773, 188033652,
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1, 46, 1125, 19316, 260197, 2918394,
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12686768, 373279778, 972151771, 700803085, 323660829, 529034010,
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228233497, 492491671, 631417681, 54933646, 149425728, 621332861,
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567375827, 214226237, 514413130, 94334242, 56417678, 452070622,
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427381591, 37913038, 537312918, 219404202, 592801409, 727962123,
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639161755, 216890863, 944378755, 396352437, 878653962, 905668778,
386987830, 935008847, 899701147, 100650401, 955831377, 336099358,
325599961, 655390214, 368725260, 410912881, 868037904, 255016544,
51552711, 320078126, 868474642, 332377928, 241406268, 35418479,
170587950, 775390874, 598922434, 616742075, 563583865, 362204509,
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258771291, 525460849, 233015242, 491199815, 325653075, 858892862,
519655123, 115437087, 727491564, 149427446, 582972761, 204458210,
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577558004, 62715847, 947764060, 196109904, 506172286, 447735266,
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621076591, 388367593, 68342324, 236699370, 119970164, 657351210,
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58773734, 218770767, 842309450, 694735121, 712067611, 605426442,
634737321, 598847809, 189964014, 104895974, 463967300, 12836011,
374171101, 422839429, 769990513, 562838372, 23465799, 935303296,
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514599613, 697337301, 518676386, 255182547, 320862033, 438306682,
656059329, 246817307, 296427451, 518314128, 212813255, 401599307,
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172586320, 726876085, 210684082, 897202470, 742850020, 161301259,
120853804, 344539574, 836860211, 667275920, 72688787, 930704832,
179668299, 861726583, 168665810, 834696469, 672920894, 419563732,
302874180, 454615268, 934181182, 119694911, 779976833, 216225187,
244379028, 586838513, 942544272, 397970796, 155525782, 435250288,
609294947, 697035870, 790138207, 313089121, 451259481, 904475234,
15500998, 428233316, 352796372, 805867626, 355791012, 191743365,
390372515, 86113794, 224579645, 34292553, 472538607, 244805809,
799547326, 350596592, 550928379, 248605526, 858957317, 809083222,
418025439, 717379009, 843111164, 748566980, 795763411, 344249103,
246799165, 468081584, 533360568, 97839725, 814208152, 370784820,
149643652, 648814350, 586462723, 179226570, 323415874, 413399345,
830824722, 901264775, 785155020, 673315179, 883230707, 320461657,
209574161, 896187167, 641537195, 580708044, 615201169, 907420567,
226969633, 44823693, 653925850, 618905940, 556249274, 683808190,
595045606, 406684866, 817926872, 498013040, 741888764, 255307898,
750076370, 226664326, 45791371, 138249186, 182084615, 925519009,
32002450, 507648904, 36302093, 164244320, 134446595, 176304234,
443232913, 204696272, 377207389, 330407781, 317016375, 255990328,
346121343, 776903928, 865285835, 180645765, 94169320, 523805568,
66571932, 958229276, 706032441, 157122799, 174128102, 265560802,
960871567, 814597354, 840895548, 702037, 848074074, 17426708,
276377856, 55696613, 206160180, 32721003, 453495162, 587538197,
204676036, 610254246, 936113705, 842825687, 202272844, 145230437,
624393323, 739106533, 700708897, 523328161, 691038973, 656087189,
213848962, 927815456, 921255504, 609475698, 113463094, 529085932,
807792149, 579407091, 163833313, 694176222, 471399591, 346973697,
718259544, 297359882, 892552532, 451373341, 120883534, 8029910,
624607649, 606649877, 815313728, 231664869, 673443919, 615486405,
94571095, 110823650, 950289120, 646876432, 928906934, 684469503,
297251947, 919054473, 285157267, 967739040, 274416446, 465229888,
656873003, 825576691, 53305194, 539107135, 609069516, 669008004,
585520763, 526072937, 91836656, 101778461, 538228891, 424599066,
719851020, 234795290, 701214554, 914481398, 497763115, 504286064,
212679726, 409710596, 134500525, 154608785, 554889670, 267547678,
851784437, 749366191, 681515762, 587313005, 604179607, 297539881,
51380469, 30897443, 988568867, 430543091, 168358864, 325894509,
131217074, 122226126, 289735266, 2541560, 697428098, 339809826,
339814711, 568813016, 256466301, 865405619, 710940331, 7424767,
660900037, 729644940, 444, 450105203, 690939247, 459755659,
92556107, 42398758, 782901298, 483436309, 73995240, 784415989,
602791285, 655683750, 744368335, 684929720, 939318197, 1937536,
94209990, 544006669, 195169186, 297173575, 151918090, 559870646,
425964491, 818978660, 571568643, 60393204, 415731654, 547756555,
991386612, 383053326, 997830526, 963081859, 107336308, 898219937,
906988404, 550036125, 981857264, 691293427, 481189647, 501756531,
316529056, 476096058, 168221459, 165690115, 553028411, 960794528,
453386272, 963889156, 71983103, 494867184, 462967097, 635240847,
989817132, 23786457, 968645733, 163475174, 884798755, 971346358,
8231228, 947835970, 751371876, 21594745, 702982989, 997528759,
30899466, 874470660, 839706683, 64336797, 183002010, 415355406,
851375333, 802315034, 662347966, 459017349, 83113197, 807783874,
686211775, 665742332, 548408223, 38712773, 947065654, 224142524,
544199777, 554457822, 161813447, 59932464, 324817969, 826816639,
159675767, 610260222, 802832692, 962264291, 230527850, 654881259,
493134625, 56109407, 491401533, 163680598, 892934948, 889185132,
78662275, 741528574, 616484511, 204394884, 120980232, 4959172,
884202370, 468625389, 987185268, 797914336, 292935354, 542176515,
965256954, 25044127, 701524209, 669825969, 264620823, 983915826,
463815578, 325409981, 142164710, 946513145, 626025918, 890502327,
456729879, 921471703, 889764153, 10834930, 550258959, 888111963,
456661896, 560525119, 254574198, 379302005, 359197537, 748972811,
432885247, 174603143, 495215302, 304225805, 499574, 89067439,
956588800, 479903186, 900293862, 918419160, 874312513, 779518268,
750190343, 34999197, 204187488, 29703716, 310295240, 212734818,
705461990, 880565621, 542764103, 578132976, 871657196, 920555643,
635330221, 603836039, 905337022, 446003049, 531829391, 914627500,
109964459, 793773872, 883594493, 588890899, 761763418, 850946563,
47045637, 406265955, 398330580, 175033998, 98562597, 74022406,
109783010, 888406279, 62923507, 851720727, 920064661, 659715101,
731241623, 740764931, 68490942, 26861674, 832409630, 156628069,
65837301, 277330611, 504531610, 621094682, 513712789, 824543274,
863846088, 522929299, 50674845, 205053841, 391074024, 703020653,
598865065, 977680558, 126857946, 571772915, 596794646, 195429545,
328266420, 36051456, 451216030, 522276964, 948367998, 561406981,
389510759, 585943971, 108053297, 459413669, 288907310, 136029766,
802792879, 520247265, 414339912, 337619243, 597859489, 40005835,
350918, 321070418, 199829979, 141119131, 515535428, 350920730,
314377413, 808898947, 900198037, 799762368, 570476717, 244997759,
402733111, 626061442, 103647198, 938528989, 898060580, 652361018,
641847472, 149112119, 134262079, 887185896, 606038263, 859408453,
950373236, 692335861, 405660442, 565431386, 959094106, 393940636,
423632434, 612413824, 143336067, 663257107, 9730523, 471491852,
112828340, 936303905, 998673093, 55233966, 416039620, 144081002,
565258672, 539355694, 202448366, 14002378, 539019751, 307827209,
288622328, 788194350, 570120788, 965430343, 472467292};
int n, k;
cin >> n >> k;
if (k & 1) {
assert(false);
cout << 0 << '\n';
return 0;
}
int idx = 0;
REP(i, n - 1) idx += sz[i];
idx += k / 2;
cout << ans[idx] % MOD << '\n';
return 0;
}
| #include <bits/stdc++.h>
using namespace std;
#define FOR(i, m, n) for (int i = (m); i < (n); ++i)
#define REP(i, n) FOR(i, 0, n)
const int MOD = 1000000007;
int main() {
// freopen("input.txt", "r", stdin);
vector<int> sz{1, 2, 3, 5, 7, 10, 13, 17, 21, 26,
31, 37, 43, 50, 57, 65, 73, 82, 91, 101,
111, 122, 133, 145, 157, 170, 183, 197, 211, 226,
241, 257, 273, 290, 307, 325, 343, 362, 381, 401,
421, 442, 463, 485, 507, 530, 553, 577, 601, 626};
vector<long long> ans{
1, 1, 1, 1, 2, 3,
1, 3, 7, 9, 4, 1,
4, 12, 24, 35, 24, 20,
1, 5, 18, 46, 93, 137,
148, 136, 100, 36, 1, 6,
25, 76, 187, 366, 591, 744,
884, 832, 716, 360, 252, 1,
7, 33, 115, 327, 765, 1523,
2553, 3696, 4852, 5708, 5892, 5452,
4212, 2844, 1764, 576, 1, 8,
42, 164, 524, 1400, 3226, 6436,
11323, 17640, 25472, 33280, 40520, 44240,
45512, 40608, 35496, 25632, 18108, 8064,
5184, 1, 9, 52, 224, 790,
2350, 6072, 13768, 27821, 50461, 83420,
127840, 182256, 242272, 301648, 350864, 382576,
389232, 373536, 332640, 273060, 208548, 136512,
81792, 46656, 14400, 1, 10, 63,
296, 1138, 3708, 10538, 26480, 59673,
121626, 226787, 390144, 628744, 949472, 1355952,
1826464, 2341600, 2833632, 3282464, 3584160, 3765600,
3719664, 3531924, 3093336, 2642364, 2010240, 1508544,
963072, 621504, 259200, 158400, 1, 11,
75, 381, 1582, 5582, 17222, 47194,
116457, 261163, 537459, 1022981, 1817652, 3040352,
4810720, 7230928, 10360160, 14178912, 18577792, 23327872,
28132048, 32571504, 36310464, 38903904, 40028724, 39552156,
37457388, 33941412, 29314944, 24179904, 18835776, 13777344,
9452736, 5716800, 3211200, 1742400, 518400, 1,
12, 88, 480, 2137, 8096, 26860,
79376, 211811, 515308, 1153268, 2391936, 4633331,
8438664, 14557048, 23874176, 37407760, 56117824, 80906752,
112162240, 150052400, 193572736, 241706624, 291576384, 341323776,
386160048, 424359540, 450394992, 464545584, 461528208, 446428476,
413557632, 373573440, 321120000, 268449408, 210332160, 162330624,
112550400, 77788800, 46540800, 28497600, 11404800, 6739200,
1, 13, 102, 594, 2819, 11391,
40344, 127508, 364587, 952559, 2293742, 5126898,
10710633, 21042989, 39117852, 69175664, 116857024, 189256368,
294745440, 442503456, 641759376, 900689616, 225195321, 617201401,
74227554, 586823330, 140227131, 711888699, 274217080, 795069832,
242715461, 585116357, 796764497, 861974465, 769155485, 525176285,
146566301, 650715556, 73773796, 455145195, 828946802, 226153586,
685663993, 216281593, 828705600, 536385600, 309484800, 166924800,
87609600, 25401600, 1, 14, 117, 724,
3645, 15626, 58741, 197280, 600215, 1671266,
4295107, 10259436, 22922995, 48184950, 95816051, 181136304,
327071752, 566117888, 942525072, 513281017, 349163810, 532145419,
154557773, 309226767, 88509354, 563257605, 789064441, 766807654,
474675580, 795689314, 599134613, 627066840, 658988947, 307608398,
337632800, 295701193, 44870369, 150212311, 705302359, 336038622,
452522163, 797367958, 62674553, 57993322, 777736994, 845298906,
452367755, 90655804, 810196653, 976943895, 564798323, 582118351,
994783972, 869862386, 697759993, 660441600, 381024000, 1,
15, 133, 871, 4633, 20979, 83313,
295803, 952299, 2809009, 7656027, 19414457, 46086247,
102967901, 217634463, 437195525, 838372452, 540635289, 722168530,
638311860, 640827391, 196046908, 898688562, 478199884, 793020369,
808862771, 562236075, 94791602, 385333320, 237794527, 197694759,
398043392, 504456766, 579736664, 78137089, 793367253, 961295251,
280517488, 179779783, 947563092, 901772777, 859566930, 199212409,
920781370, 362900807, 735004334, 297264154, 482748036, 653703312,
140400674, 623159781, 320434095, 373194802, 13313867, 205909676,
360223815, 570584277, 68075848, 372652149, 961247580, 23084534,
261139053, 151302323, 715359965, 625702393, 1, 16,
150, 1036, 5802, 27648, 115538, 431844,
1464468, 4554040, 13096378, 35069940, 87969166, 207781760,
464351910, 986188668, 998611836, 879505923, 237509223, 15110629,
621334822, 88677622, 257578542, 963016850, 235638961, 442107823,
429101453, 483004748, 329733855, 718448185, 266304376, 413950543,
256286771, 626720357, 318467482, 59069608, 81901162, 352730851,
104241055, 503595237, 956355036, 534522134, 457799859, 108929893,
887297322, 424614770, 265024591, 876853471, 515703045, 692038809,
210906163, 20070317, 468291405, 145357835, 797577421, 232358134,
747771239, 343859985, 833879609, 78548665, 289896769, 449285934,
313197004, 379603290, 397630660, 609910102, 442642726, 627950853,
722186028, 705163253, 998661511, 771071664, 636940611, 1,
17, 168, 1220, 7172, 35852, 157132,
616084, 2192506, 7159090, 21631676, 60902460, 160707468,
399489140, 939796228, 101060910, 481320121, 151453550, 952463061,
931694473, 957528293, 554162053, 990142499, 644946993, 651797781,
791594351, 556120466, 271969917, 107619398, 710253075, 280526462,
615698879, 99748930, 775178221, 257586036, 645364809, 806795120,
340635512, 801741075, 790520661, 68328385, 331513794, 351728404,
931812262, 91105169, 176869824, 445724501, 370449983, 359815736,
918724628, 869062973, 659791249, 657727222, 395793733, 32692523,
78858425, 151369211, 628504487, 842750087, 152091477, 889718876,
908002421, 944598446, 656459208, 712920845, 47550280, 92244967,
110652620, 951703750, 217822851, 901098263, 655149074, 861896271,
859184013, 992613245, 768042116, 807916959, 335381553, 909568095,
153171069, 827990317, 681893483, 1, 18, 187,
1424, 8764, 45832, 210072, 861400, 3206786,
10957868, 34666130, 102239488, 282743580, 736889224, 817936097,
262532028, 534038590, 412279142, 965109380, 86702267, 846482566,
945052509, 644517943, 548776024, 679330947, 152291502, 882910517,
188127435, 636778925, 902059202, 132531208, 193904122, 893705022,
246193070, 652079051, 958060250, 148697872, 504141990, 371410212,
807466717, 514477363, 565424570, 560794838, 11419155, 215137208,
665710713, 791504234, 359367396, 224050172, 509091270, 125989128,
782600310, 957126038, 667219607, 386301613, 605448653, 296557741,
618019404, 194294675, 222923480, 765962783, 743934970, 24324611,
512643153, 214242880, 286900578, 228877964, 91240846, 430467141,
533029377, 904804693, 373207899, 916503101, 83598539, 560288494,
363356684, 68282446, 152683809, 284461190, 124425011, 167972327,
428909487, 373215034, 420008537, 513304383, 874743039, 487193257,
97337408, 532639641, 184378261, 955976093, 1, 19,
207, 1649, 10600, 57852, 276620, 1183172,
4595034, 16384606, 54107670, 166643130, 481442164, 311240781,
381378831, 288429444, 380463632, 370477330, 171662912, 688513797,
626045604, 789881798, 844990830, 70546834, 230422087, 267733218,
970080423, 75064762, 104073936, 888990608, 393490487, 819401315,
362017415, 197941501, 97730360, 491049732, 790022455, 142301163,
381999002, 81566974, 255547256, 500580164, 503785886, 874661360,
953064009, 357278689, 416715628, 656421867, 311332859, 849655408,
575613107, 850236831, 533549113, 255339339, 611845477, 501164398,
135987981, 672393680, 678611757, 552403430, 470027818, 333312311,
203812034, 929380798, 133842121, 497262544, 839881753, 29703780,
133717366, 249364505, 959337844, 632980495, 72879056, 356819838,
662140760, 182352973, 260787823, 329159184, 423643610, 488600943,
164109163, 8143787, 184454683, 684285006, 693158498, 382122550,
488552031, 777204359, 564238497, 598675373, 603916585, 720234840,
93182262, 238936257, 486420235, 352604922, 958291193, 880928218,
736558676, 163545641, 189347824, 1, 20, 228,
1896, 12703, 72200, 359348, 1599616, 6465450,
23997032, 82508708, 264654080, 796563486, 260832418, 76986106,
528774007, 854313906, 307546108, 722735109, 61004626, 805619536,
18191861, 511411798, 993782454, 401030744, 633897378, 70862649,
96855526, 314416445, 92910833, 135520920, 492052755, 24334887,
643976444, 574388511, 317610455, 122930943, 637889505, 255461238,
950861369, 48876234, 149504663, 198682481, 942670278, 866921314,
563621302, 960474580, 980132644, 624295523, 399490883, 351714973,
945626033, 827908349, 157456205, 481861323, 472454109, 343580291,
683697065, 95059407, 841332348, 464714941, 596887160, 38681949,
757883329, 590303711, 64921694, 730086270, 15240461, 714742087,
32874447, 175996750, 277466516, 788882909, 11880203, 95097385,
778398376, 531252352, 479554466, 557013590, 609738833, 798714176,
859324339, 721484640, 268442938, 861267595, 806087188, 31691029,
950412807, 580575404, 849451646, 691790951, 264837637, 967322620,
365040170, 622467624, 456436788, 658680316, 60575186, 387550026,
215002020, 31349904, 449373833, 559514745, 640364153, 807042078,
450172023, 562637973, 109112418, 545193132, 195217263, 976304283,
1, 21, 250, 2166, 15097, 89189,
461164, 2132144, 8950214, 34503182, 123236828, 410729140,
284813823, 790835929, 594736274, 153822108, 374418504, 157537842,
147846917, 133568389, 483576696, 508616649, 656867821, 84463125,
640047601, 955370715, 182167616, 49108700, 229345632, 795610484,
502493987, 857101031, 142485158, 996679960, 742503997, 723858587,
317526153, 365342533, 250775491, 442738912, 408346120, 881242865,
135363327, 231979623, 347291745, 824934645, 995772018, 164592917,
354883487, 450805745, 963969802, 171006181, 92161176, 169883419,
961669090, 26844445, 393784092, 571606470, 464707158, 34144520,
652396373, 745405475, 202923498, 135935314, 703695236, 776259115,
48310283, 874186699, 219390686, 510394758, 751965065, 418424556,
8781061, 736058807, 674014147, 674780706, 590530540, 4352977,
803825827, 167292329, 541083402, 260679638, 665083995, 939990721,
816665296, 886017767, 669822229, 694816125, 643235536, 937314556,
115942268, 261159535, 687177905, 12245758, 694615643, 977706180,
217949106, 118952653, 898868241, 856650616, 42954342, 330321980,
535121720, 982503521, 719423135, 714354007, 18745970, 333448882,
302037622, 935654015, 778423936, 317991952, 284756555, 504736970,
155871365, 118263505, 797065125, 640838446, 258037348, 34344762,
502389803, 911086550, 1, 22, 273, 2460,
17807, 109158, 585339, 2805752, 12209406, 48792492,
180680070, 624410736, 25734764, 199973794, 977710523, 571365953,
412869707, 328237414, 214863466, 633048751, 257394955, 317735309,
673309005, 193600985, 704135816, 514918834, 650479735, 33606857,
490034801, 698396427, 67986999, 220797055, 218864611, 931163713,
940790978, 675674698, 85542051, 543018292, 61247584, 910803604,
831296179, 923943160, 89478028, 104500393, 161998091, 254912705,
539249258, 547749719, 357852173, 690014841, 206926249, 893887199,
747112232, 382059625, 148865046, 301618706, 260333115, 442306036,
247371284, 782005651, 233300621, 920894203, 317455792, 678639547,
427050277, 482884001, 854060466, 980543322, 860769666, 701293636,
771136168, 670745480, 486701027, 168461356, 848787800, 289825171,
498776317, 33320170, 430165721, 821516580, 115533370, 398776967,
333310602, 563097053, 553134182, 219816464, 216637272, 206027601,
933677337, 925510467, 267639197, 43693887, 486722546, 270929495,
877730912, 261947307, 375318068, 692508932, 989184491, 226696206,
288508969, 739837562, 849035543, 782296408, 273955665, 801085382,
431898190, 935043965, 202752072, 867866169, 151133676, 67940990,
78118516, 742654574, 165553271, 254022475, 668960857, 929973305,
656759571, 877339826, 925206924, 133648890, 623964326, 796176354,
256442424, 844384225, 955053908, 35821657, 33969824, 328610099,
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1, 46, 1125, 19316, 260197, 2918394,
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427381591, 37913038, 537312918, 219404202, 592801409, 727962123,
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639161755, 216890863, 944378755, 396352437, 878653962, 905668778,
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577558004, 62715847, 947764060, 196109904, 506172286, 447735266,
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621076591, 388367593, 68342324, 236699370, 119970164, 657351210,
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58773734, 218770767, 842309450, 694735121, 712067611, 605426442,
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374171101, 422839429, 769990513, 562838372, 23465799, 935303296,
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322632262, 651271379, 102975853, 978392574, 171788197, 425477753,
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207964600, 565016864, 366179929, 769999162, 980709292, 279413092,
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144652778, 603456104, 397495432, 911648885, 161631342, 183072379,
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294553519, 149363293, 27077251, 84953964, 442875086, 52560456,
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131713887, 339453221, 738950163, 633262610, 426758031, 238112917,
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297251947, 919054473, 285157267, 967739040, 274416446, 465229888,
656873003, 825576691, 53305194, 539107135, 609069516, 669008004,
585520763, 526072937, 91836656, 101778461, 538228891, 424599066,
719851020, 234795290, 701214554, 914481398, 497763115, 504286064,
212679726, 409710596, 134500525, 154608785, 554889670, 267547678,
851784437, 749366191, 681515762, 587313005, 604179607, 297539881,
51380469, 30897443, 988568867, 430543091, 168358864, 325894509,
131217074, 122226126, 289735266, 2541560, 697428098, 339809826,
339814711, 568813016, 256466301, 865405619, 710940331, 7424767,
660900037, 729644940, 444, 450105203, 690939247, 459755659,
92556107, 42398758, 782901298, 483436309, 73995240, 784415989,
602791285, 655683750, 744368335, 684929720, 939318197, 1937536,
94209990, 544006669, 195169186, 297173575, 151918090, 559870646,
425964491, 818978660, 571568643, 60393204, 415731654, 547756555,
991386612, 383053326, 997830526, 963081859, 107336308, 898219937,
906988404, 550036125, 981857264, 691293427, 481189647, 501756531,
316529056, 476096058, 168221459, 165690115, 553028411, 960794528,
453386272, 963889156, 71983103, 494867184, 462967097, 635240847,
989817132, 23786457, 968645733, 163475174, 884798755, 971346358,
8231228, 947835970, 751371876, 21594745, 702982989, 997528759,
30899466, 874470660, 839706683, 64336797, 183002010, 415355406,
851375333, 802315034, 662347966, 459017349, 83113197, 807783874,
686211775, 665742332, 548408223, 38712773, 947065654, 224142524,
544199777, 554457822, 161813447, 59932464, 324817969, 826816639,
159675767, 610260222, 802832692, 962264291, 230527850, 654881259,
493134625, 56109407, 491401533, 163680598, 892934948, 889185132,
78662275, 741528574, 616484511, 204394884, 120980232, 4959172,
884202370, 468625389, 987185268, 797914336, 292935354, 542176515,
965256954, 25044127, 701524209, 669825969, 264620823, 983915826,
463815578, 325409981, 142164710, 946513145, 626025918, 890502327,
456729879, 921471703, 889764153, 10834930, 550258959, 888111963,
456661896, 560525119, 254574198, 379302005, 359197537, 748972811,
432885247, 174603143, 495215302, 304225805, 499574, 89067439,
956588800, 479903186, 900293862, 918419160, 874312513, 779518268,
750190343, 34999197, 204187488, 29703716, 310295240, 212734818,
705461990, 880565621, 542764103, 578132976, 871657196, 920555643,
635330221, 603836039, 905337022, 446003049, 531829391, 914627500,
109964459, 793773872, 883594493, 588890899, 761763418, 850946563,
47045637, 406265955, 398330580, 175033998, 98562597, 74022406,
109783010, 888406279, 62923507, 851720727, 920064661, 659715101,
731241623, 740764931, 68490942, 26861674, 832409630, 156628069,
65837301, 277330611, 504531610, 621094682, 513712789, 824543274,
863846088, 522929299, 50674845, 205053841, 391074024, 703020653,
598865065, 977680558, 126857946, 571772915, 596794646, 195429545,
328266420, 36051456, 451216030, 522276964, 948367998, 561406981,
389510759, 585943971, 108053297, 459413669, 288907310, 136029766,
802792879, 520247265, 414339912, 337619243, 597859489, 40005835,
350918, 321070418, 199829979, 141119131, 515535428, 350920730,
314377413, 808898947, 900198037, 799762368, 570476717, 244997759,
402733111, 626061442, 103647198, 938528989, 898060580, 652361018,
641847472, 149112119, 134262079, 887185896, 606038263, 859408453,
950373236, 692335861, 405660442, 565431386, 959094106, 393940636,
423632434, 612413824, 143336067, 663257107, 9730523, 471491852,
112828340, 936303905, 998673093, 55233966, 416039620, 144081002,
565258672, 539355694, 202448366, 14002378, 539019751, 307827209,
288622328, 788194350, 570120788, 965430343, 472467292};
int n, k;
cin >> n >> k;
if (k & 1) {
cout << 0 << '\n';
return 0;
}
if (k > (sz[n - 1] - 1) * 2) {
cout << 0 << '\n';
return 0;
}
int idx = 0;
REP(i, n - 1) idx += sz[i];
idx += k / 2;
cout << ans[idx] % MOD << '\n';
return 0;
}
| replace | 1,815 | 1,816 | 1,815 | 1,819 | 0 | |
p02974 | C++ | Runtime Error | // warm heart, wagging tail,and a smile just for you!
// ███████████
// ███╬╬╬╬╬╬╬╬╬╬███
// ███╬╬╬╬╬████╬╬╬╬╬╬███
// ███████████
// ██╬╬╬╬╬████╬╬████╬╬╬╬╬██
// █████████╬╬╬╬╬████████████╬╬╬╬╬██╬╬╬╬╬╬███╬╬╬╬╬██
// ████████╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬█████████╬╬╬╬╬╬██╬╬╬╬╬╬╬██
// ████╬██╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬█████████╬╬╬╬╬╬╬╬╬╬╬██
// ███╬╬╬█╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬██╬╬███╬╬╬╬╬╬╬█████
// ███╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬██╬╬╬████████╬╬╬╬╬██
// ███╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬███╬╬╬╬╬╬╬╬╬███
// ███╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬█████╬╬╬╬╬╬╬██
// ████╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬████╬╬╬╬╬████
// █████████████╬╬╬╬╬╬╬╬██╬╬╬╬╬████╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬█████╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬███╬╬╬╬██████
// ████╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬██╬╬██████╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬██████╬╬╬╬╬╬╬███████████╬╬╬╬╬╬╬╬██╬╬╬██╬╬╬██
// ███╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬██╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬██╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬████╬╬╬╬╬╬╬╬╬╬╬█╬╬╬╬╬╬╬██╬╬╬╬╬╬╬╬██
// ██╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬██╬╬╬╬▓▓▓▓▓▓╬╬╬████╬╬████╬╬╬╬╬╬╬▓▓▓▓▓▓▓▓██╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬██╬╬╬╬╬╬╬███
// ██╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬██████▓▓▓▓▓▓▓╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬▓▓▓▓▓▓▓██╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬██╬╬╬╬█████
// ███╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬███╬╬╬╬╬██╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬█████╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬████████
// ███╬╬╬╬╬╬╬╬╬╬╬╬╬█████╬╬╬╬╬╬╬╬██╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬███╬╬██╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬██
// ██████████████
// ████╬╬╬╬╬╬███████████████████████████╬╬╬╬╬██╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬████
// ███████ █████
// ███████████████████
#include "bits/stdc++.h"
using namespace std;
#define MOD 1000000007
// #define MOD 998244353
const double EPS = 1e-9;
#define INF (1LL << 60)
#define D double
#define fs first
#define sc second
#define int long long
#define FOR(i, a, b) for (int i = (a); i < (b); ++i)
#define RFOR(i, a, b) for (int i = (b - 1); i >= (a); --i)
#define REP(i, n) FOR(i, 0, (n))
#define RREP(i, n) RFOR(i, 0, (n))
#define ITR(itr, mp) for (auto itr = (mp).begin(); itr != (mp).end(); ++itr)
#define RITR(itr, mp) for (auto itr = (mp).rbegin(); itr != (mp).rend(); ++itr)
#define range(i, a, b) ((a) <= (i) && (i) < (b))
#define debug(x) cout << #x << " = " << (x) << endl;
#define SP << " " <<
typedef pair<int, int> P;
#include <cstdint>
template <std::uint_fast64_t Modulus> class modint {
using u64 = std::uint_fast64_t;
u64 a;
public:
constexpr modint(const u64 x = 0) noexcept : a(x % Modulus) {}
constexpr u64 val() const noexcept { return a; }
constexpr modint operator+(const modint rhs) const noexcept {
return modint(*this) += rhs;
}
constexpr modint operator-(const modint rhs) const noexcept {
return modint(*this) -= rhs;
}
constexpr modint operator*(const modint rhs) const noexcept {
return modint(*this) *= rhs;
}
constexpr modint operator/(const modint rhs) const noexcept {
return modint(*this) /= rhs;
}
constexpr bool operator==(const modint rhs) const noexcept {
return modint(*this).val() == rhs.val();
}
modint &operator+=(const modint rhs) noexcept {
a += rhs.a;
if (a >= Modulus) {
a -= Modulus;
}
return *this;
}
modint &operator-=(const modint rhs) noexcept {
if (a < rhs.a) {
a += Modulus;
}
a -= rhs.a;
return *this;
}
modint &operator*=(const modint rhs) noexcept {
a = a * rhs.a % Modulus;
return *this;
}
modint &operator/=(modint rhs) noexcept {
u64 exp = Modulus - 2;
while (exp) {
if (exp % 2) {
*this *= rhs;
}
rhs *= rhs;
exp /= 2;
}
return *this;
}
};
using mint = modint<MOD>;
typedef vector<mint> vec;
typedef vector<vector<mint>> mat;
signed main() {
ios::sync_with_stdio(false);
cin.tie(0);
int n, k;
cin >> n >> k;
if (k % 2) {
cout << 0 << endl;
return 0;
}
int a[] = {1, 1, 1, 1, 2, 3,
1, 3, 7, 9, 4, 1,
4, 12, 24, 35, 24, 20,
1, 5, 18, 46, 93, 137,
148, 136, 100, 36, 1, 6,
25, 76, 187, 366, 591, 744,
884, 832, 716, 360, 252, 1,
7, 33, 115, 327, 765, 1523,
2553, 3696, 4852, 5708, 5892, 5452,
4212, 2844, 1764, 576, 1, 8,
42, 164, 524, 1400, 3226, 6436,
11323, 17640, 25472, 33280, 40520, 44240,
45512, 40608, 35496, 25632, 18108, 8064,
5184, 1, 9, 52, 224, 790,
2350, 6072, 13768, 27821, 50461, 83420,
127840, 182256, 242272, 301648, 350864, 382576,
389232, 373536, 332640, 273060, 208548, 136512,
81792, 46656, 14400, 1, 10, 63,
296, 1138, 3708, 10538, 26480, 59673,
121626, 226787, 390144, 628744, 949472, 1355952,
1826464, 2341600, 2833632, 3282464, 3584160, 3765600,
3719664, 3531924, 3093336, 2642364, 2010240, 1508544,
963072, 621504, 259200, 158400, 1, 11,
75, 381, 1582, 5582, 17222, 47194,
116457, 261163, 537459, 1022981, 1817652, 3040352,
4810720, 7230928, 10360160, 14178912, 18577792, 23327872,
28132048, 32571504, 36310464, 38903904, 40028724, 39552156,
37457388, 33941412, 29314944, 24179904, 18835776, 13777344,
9452736, 5716800, 3211200, 1742400, 518400, 1,
12, 88, 480, 2137, 8096, 26860,
79376, 211811, 515308, 1153268, 2391936, 4633331,
8438664, 14557048, 23874176, 37407760, 56117824, 80906752,
112162240, 150052400, 193572736, 241706624, 291576384, 341323776,
386160048, 424359540, 450394992, 464545584, 461528208, 446428476,
413557632, 373573440, 321120000, 268449408, 210332160, 162330624,
112550400, 77788800, 46540800, 28497600, 11404800, 6739200,
1, 13, 102, 594, 2819, 11391,
40344, 127508, 364587, 952559, 2293742, 5126898,
10710633, 21042989, 39117852, 69175664, 116857024, 189256368,
294745440, 442503456, 641759376, 900689616, 225195321, 617201401,
74227554, 586823330, 140227131, 711888699, 274217080, 795069832,
242715461, 585116357, 796764497, 861974465, 769155485, 525176285,
146566301, 650715556, 73773796, 455145195, 828946802, 226153586,
685663993, 216281593, 828705600, 536385600, 309484800, 166924800,
87609600, 25401600, 1, 14, 117, 724,
3645, 15626, 58741, 197280, 600215, 1671266,
4295107, 10259436, 22922995, 48184950, 95816051, 181136304,
327071752, 566117888, 942525072, 513281017, 349163810, 532145419,
154557773, 309226767, 88509354, 563257605, 789064441, 766807654,
474675580, 795689314, 599134613, 627066840, 658988947, 307608398,
337632800, 295701193, 44870369, 150212311, 705302359, 336038622,
452522163, 797367958, 62674553, 57993322, 777736994, 845298906,
452367755, 90655804, 810196653, 976943895, 564798323, 582118351,
994783972, 869862386, 697759993, 660441600, 381024000, 1,
15, 133, 871, 4633, 20979, 83313,
295803, 952299, 2809009, 7656027, 19414457, 46086247,
102967901, 217634463, 437195525, 838372452, 540635289, 722168530,
638311860, 640827391, 196046908, 898688562, 478199884, 793020369,
808862771, 562236075, 94791602, 385333320, 237794527, 197694759,
398043392, 504456766, 579736664, 78137089, 793367253, 961295251,
280517488, 179779783, 947563092, 901772777, 859566930, 199212409,
920781370, 362900807, 735004334, 297264154, 482748036, 653703312,
140400674, 623159781, 320434095, 373194802, 13313867, 205909676,
360223815, 570584277, 68075848, 372652149, 961247580, 23084534,
261139053, 151302323, 715359965, 625702393, 1, 16,
150, 1036, 5802, 27648, 115538, 431844,
1464468, 4554040, 13096378, 35069940, 87969166, 207781760,
464351910, 986188668, 998611836, 879505923, 237509223, 15110629,
621334822, 88677622, 257578542, 963016850, 235638961, 442107823,
429101453, 483004748, 329733855, 718448185, 266304376, 413950543,
256286771, 626720357, 318467482, 59069608, 81901162, 352730851,
104241055, 503595237, 956355036, 534522134, 457799859, 108929893,
887297322, 424614770, 265024591, 876853471, 515703045, 692038809,
210906163, 20070317, 468291405, 145357835, 797577421, 232358134,
747771239, 343859985, 833879609, 78548665, 289896769, 449285934,
313197004, 379603290, 397630660, 609910102, 442642726, 627950853,
722186028, 705163253, 998661511, 771071664, 636940611, 1,
17, 168, 1220, 7172, 35852, 157132,
616084, 2192506, 7159090, 21631676, 60902460, 160707468,
399489140, 939796228, 101060910, 481320121, 151453550, 952463061,
931694473, 957528293, 554162053, 990142499, 644946993, 651797781,
791594351, 556120466, 271969917, 107619398, 710253075, 280526462,
615698879, 99748930, 775178221, 257586036, 645364809, 806795120,
340635512, 801741075, 790520661, 68328385, 331513794, 351728404,
931812262, 91105169, 176869824, 445724501, 370449983, 359815736,
918724628, 869062973, 659791249, 657727222, 395793733, 32692523,
78858425, 151369211, 628504487, 842750087, 152091477, 889718876,
908002421, 944598446, 656459208, 712920845, 47550280, 92244967,
110652620, 951703750, 217822851, 901098263, 655149074, 861896271,
859184013, 992613245, 768042116, 807916959, 335381553, 909568095,
153171069, 827990317, 681893483, 1, 18, 187,
1424, 8764, 45832, 210072, 861400, 3206786,
10957868, 34666130, 102239488, 282743580, 736889224, 817936097,
262532028, 534038590, 412279142, 965109380, 86702267, 846482566,
945052509, 644517943, 548776024, 679330947, 152291502, 882910517,
188127435, 636778925, 902059202, 132531208, 193904122, 893705022,
246193070, 652079051, 958060250, 148697872, 504141990, 371410212,
807466717, 514477363, 565424570, 560794838, 11419155, 215137208,
665710713, 791504234, 359367396, 224050172, 509091270, 125989128,
782600310, 957126038, 667219607, 386301613, 605448653, 296557741,
618019404, 194294675, 222923480, 765962783, 743934970, 24324611,
512643153, 214242880, 286900578, 228877964, 91240846, 430467141,
533029377, 904804693, 373207899, 916503101, 83598539, 560288494,
363356684, 68282446, 152683809, 284461190, 124425011, 167972327,
428909487, 373215034, 420008537, 513304383, 874743039, 487193257,
97337408, 532639641, 184378261, 955976093, 1, 19,
207, 1649, 10600, 57852, 276620, 1183172,
4595034, 16384606, 54107670, 166643130, 481442164, 311240781,
381378831, 288429444, 380463632, 370477330, 171662912, 688513797,
626045604, 789881798, 844990830, 70546834, 230422087, 267733218,
970080423, 75064762, 104073936, 888990608, 393490487, 819401315,
362017415, 197941501, 97730360, 491049732, 790022455, 142301163,
381999002, 81566974, 255547256, 500580164, 503785886, 874661360,
953064009, 357278689, 416715628, 656421867, 311332859, 849655408,
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551343042, 374674126, 67456147, 355451755, 309520773, 188033652,
438124708, 963234900, 524570431, 966112342, 609641134, 592345761,
1, 46, 1125, 19316, 260197, 2918394,
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228233497, 492491671, 631417681, 54933646, 149425728, 621332861,
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694069860, 101033114, 601510215, 405093272, 877399916, 606786230,
712700446, 365826653, 440611748, 222502187, 628732942, 260127071,
415183336, 331627148, 603111841, 484627861, 252203062, 603610758,
918118836, 775502591, 558836403, 458735214, 903545723, 229008632,
239177179, 70767308, 751925156, 652119146, 980361868, 450630793,
63075950, 714904102, 795480239, 196855664, 446357279, 343343138,
751184330, 353543327, 265335039, 291055365, 141693974, 952501609,
772988967, 982806649, 295006336, 142133453, 389243658, 551050114,
837354729, 288032982, 926886748, 940810321, 996269340, 544323652,
123254721, 449847916, 164321665, 408440169, 540527971, 235735087,
384560805, 888470688, 711171300, 414716347, 219479361, 559050803,
610845133, 321258507, 296543705, 253557800, 771631909, 466270561,
966519146, 100544233, 474799959, 147649345, 956135303, 808272257,
279282920, 472357219, 422709994, 530025514, 999788009, 64593897,
709199531, 479060735, 311654131, 943520011, 427742758, 799287390,
782392773, 191335024, 830990096, 336010037, 237942831, 237453992,
695887098, 398366572, 529644737, 344086296, 862051533, 684436865,
317549101, 968659087, 366641438, 1, 49, 1272,
23124, 329180, 3895908, 39783804, 359447204, 925733384,
746545659, 165655001, 158091124, 719304162, 111160209, 171158550,
935012406, 874008903, 988755604, 608336289, 351327718, 211049418,
970686245, 441380023, 920727544, 396494781, 218114186, 934368772,
753990221, 203263446, 488226646, 946324350, 642441651, 816607227,
122420091, 629716118, 498106515, 488881569, 100763230, 814241373,
430998026, 986590664, 188596813, 238499794, 887765759, 719310391,
819612870, 840885905, 584773429, 811468143, 396065785, 368868801,
299761844, 617462619, 308704442, 206242421, 833439007, 106715469,
970135543, 972244832, 66232618, 207050932, 577078708, 955731123,
103929249, 632790957, 297717977, 280927805, 856143814, 140717794,
889342899, 570959166, 553036683, 311778062, 833874032, 321035571,
629235909, 60666525, 19636232, 889773198, 837811568, 283828621,
499062871, 459250525, 468391935, 389843786, 80632526, 462481073,
859711240, 66143264, 831825780, 518914304, 998480225, 496960804,
480385724, 483317701, 923742113, 771054094, 630267330, 478946945,
527928962, 674723787, 882998613, 123711144, 324674723, 964132061,
961988031, 65215295, 858250635, 924300325, 577545014, 241841560,
172586320, 726876085, 210684082, 897202470, 742850020, 161301259,
120853804, 344539574, 836860211, 667275920, 72688787, 930704832,
179668299, 861726583, 168665810, 834696469, 672920894, 419563732,
302874180, 454615268, 934181182, 119694911, 779976833, 216225187,
244379028, 586838513, 942544272, 397970796, 155525782, 435250288,
609294947, 697035870, 790138207, 313089121, 451259481, 904475234,
15500998, 428233316, 352796372, 805867626, 355791012, 191743365,
390372515, 86113794, 224579645, 34292553, 472538607, 244805809,
799547326, 350596592, 550928379, 248605526, 858957317, 809083222,
418025439, 717379009, 843111164, 748566980, 795763411, 344249103,
246799165, 468081584, 533360568, 97839725, 814208152, 370784820,
149643652, 648814350, 586462723, 179226570, 323415874, 413399345,
830824722, 901264775, 785155020, 673315179, 883230707, 320461657,
209574161, 896187167, 641537195, 580708044, 615201169, 907420567,
226969633, 44823693, 653925850, 618905940, 556249274, 683808190,
595045606, 406684866, 817926872, 498013040, 741888764, 255307898,
750076370, 226664326, 45791371, 138249186, 182084615, 925519009,
32002450, 507648904, 36302093, 164244320, 134446595, 176304234,
443232913, 204696272, 377207389, 330407781, 317016375, 255990328,
346121343, 776903928, 865285835, 180645765, 94169320, 523805568,
66571932, 958229276, 706032441, 157122799, 174128102, 265560802,
960871567, 814597354, 840895548, 702037, 848074074, 17426708,
276377856, 55696613, 206160180, 32721003, 453495162, 587538197,
204676036, 610254246, 936113705, 842825687, 202272844, 145230437,
624393323, 739106533, 700708897, 523328161, 691038973, 656087189,
213848962, 927815456, 921255504, 609475698, 113463094, 529085932,
807792149, 579407091, 163833313, 694176222, 471399591, 346973697,
718259544, 297359882, 892552532, 451373341, 120883534, 8029910,
624607649, 606649877, 815313728, 231664869, 673443919, 615486405,
94571095, 110823650, 950289120, 646876432, 928906934, 684469503,
297251947, 919054473, 285157267, 967739040, 274416446, 465229888,
656873003, 825576691, 53305194, 539107135, 609069516, 669008004,
585520763, 526072937, 91836656, 101778461, 538228891, 424599066,
719851020, 234795290, 701214554, 914481398, 497763115, 504286064,
212679726, 409710596, 134500525, 154608785, 554889670, 267547678,
851784437, 749366191, 681515762, 587313005, 604179607, 297539881,
51380469, 30897443, 988568867, 430543091, 168358864, 325894509,
131217074, 122226126, 289735266, 2541560, 697428098, 339809826,
339814711, 568813016, 256466301, 865405619, 710940331, 7424767,
660900037, 729644940, 444, 450105203, 690939247, 459755659,
92556107, 42398758, 782901298, 483436309, 73995240, 784415989,
602791285, 655683750, 744368335, 684929720, 939318197, 1937536,
94209990, 544006669, 195169186, 297173575, 151918090, 559870646,
425964491, 818978660, 571568643, 60393204, 415731654, 547756555,
991386612, 383053326, 997830526, 963081859, 107336308, 898219937,
906988404, 550036125, 981857264, 691293427, 481189647, 501756531,
316529056, 476096058, 168221459, 165690115, 553028411, 960794528,
453386272, 963889156, 71983103, 494867184, 462967097, 635240847,
989817132, 23786457, 968645733, 163475174, 884798755, 971346358,
8231228, 947835970, 751371876, 21594745, 702982989, 997528759,
30899466, 874470660, 839706683, 64336797, 183002010, 415355406,
851375333, 802315034, 662347966, 459017349, 83113197, 807783874,
686211775, 665742332, 548408223, 38712773, 947065654, 224142524,
544199777, 554457822, 161813447, 59932464, 324817969, 826816639,
159675767, 610260222, 802832692, 962264291, 230527850, 654881259,
493134625, 56109407, 491401533, 163680598, 892934948, 889185132,
78662275, 741528574, 616484511, 204394884, 120980232, 4959172,
884202370, 468625389, 987185268, 797914336, 292935354, 542176515,
965256954, 25044127, 701524209, 669825969, 264620823, 983915826,
463815578, 325409981, 142164710, 946513145, 626025918, 890502327,
456729879, 921471703, 889764153, 10834930, 550258959, 888111963,
456661896, 560525119, 254574198, 379302005, 359197537, 748972811,
432885247, 174603143, 495215302, 304225805, 499574, 89067439,
956588800, 479903186, 900293862, 918419160, 874312513, 779518268,
750190343, 34999197, 204187488, 29703716, 310295240, 212734818,
705461990, 880565621, 542764103, 578132976, 871657196, 920555643,
635330221, 603836039, 905337022, 446003049, 531829391, 914627500,
109964459, 793773872, 883594493, 588890899, 761763418, 850946563,
47045637, 406265955, 398330580, 175033998, 98562597, 74022406,
109783010, 888406279, 62923507, 851720727, 920064661, 659715101,
731241623, 740764931, 68490942, 26861674, 832409630, 156628069,
65837301, 277330611, 504531610, 621094682, 513712789, 824543274,
863846088, 522929299, 50674845, 205053841, 391074024, 703020653,
598865065, 977680558, 126857946, 571772915, 596794646, 195429545,
328266420, 36051456, 451216030, 522276964, 948367998, 561406981,
389510759, 585943971, 108053297, 459413669, 288907310, 136029766,
802792879, 520247265, 414339912, 337619243, 597859489, 40005835,
350918, 321070418, 199829979, 141119131, 515535428, 350920730,
314377413, 808898947, 900198037, 799762368, 570476717, 244997759,
402733111, 626061442, 103647198, 938528989, 898060580, 652361018,
641847472, 149112119, 134262079, 887185896, 606038263, 859408453,
950373236, 692335861, 405660442, 565431386, 959094106, 393940636,
423632434, 612413824, 143336067, 663257107, 9730523, 471491852,
112828340, 936303905, 998673093, 55233966, 416039620, 144081002,
565258672, 539355694, 202448366, 14002378, 539019751, 307827209,
288622328, 788194350, 570120788, 965430343, 472467292};
k /= 2;
int id = 0;
FOR(i, 1, n + 1) {
int sum = 0, now = i - 1;
FOR(j, 1, i + 1) sum += abs(now), now -= 2;
sum /= 2;
if (i == n) {
id += k;
cout << a[id] << endl;
return 0;
} else
id += sum + 1;
// debug(id);
}
return 0;
} | // warm heart, wagging tail,and a smile just for you!
// ███████████
// ███╬╬╬╬╬╬╬╬╬╬███
// ███╬╬╬╬╬████╬╬╬╬╬╬███
// ███████████
// ██╬╬╬╬╬████╬╬████╬╬╬╬╬██
// █████████╬╬╬╬╬████████████╬╬╬╬╬██╬╬╬╬╬╬███╬╬╬╬╬██
// ████████╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬█████████╬╬╬╬╬╬██╬╬╬╬╬╬╬██
// ████╬██╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬█████████╬╬╬╬╬╬╬╬╬╬╬██
// ███╬╬╬█╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬██╬╬███╬╬╬╬╬╬╬█████
// ███╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬██╬╬╬████████╬╬╬╬╬██
// ███╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬███╬╬╬╬╬╬╬╬╬███
// ███╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬█████╬╬╬╬╬╬╬██
// ████╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬████╬╬╬╬╬████
// █████████████╬╬╬╬╬╬╬╬██╬╬╬╬╬████╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬█████╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬███╬╬╬╬██████
// ████╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬██╬╬██████╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬██████╬╬╬╬╬╬╬███████████╬╬╬╬╬╬╬╬██╬╬╬██╬╬╬██
// ███╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬██╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬██╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬████╬╬╬╬╬╬╬╬╬╬╬█╬╬╬╬╬╬╬██╬╬╬╬╬╬╬╬██
// ██╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬██╬╬╬╬▓▓▓▓▓▓╬╬╬████╬╬████╬╬╬╬╬╬╬▓▓▓▓▓▓▓▓██╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬██╬╬╬╬╬╬╬███
// ██╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬██████▓▓▓▓▓▓▓╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬▓▓▓▓▓▓▓██╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬██╬╬╬╬█████
// ███╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬███╬╬╬╬╬██╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬█████╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬████████
// ███╬╬╬╬╬╬╬╬╬╬╬╬╬█████╬╬╬╬╬╬╬╬██╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬███╬╬██╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬██
// ██████████████
// ████╬╬╬╬╬╬███████████████████████████╬╬╬╬╬██╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬████
// ███████ █████
// ███████████████████
#include "bits/stdc++.h"
using namespace std;
#define MOD 1000000007
// #define MOD 998244353
const double EPS = 1e-9;
#define INF (1LL << 60)
#define D double
#define fs first
#define sc second
#define int long long
#define FOR(i, a, b) for (int i = (a); i < (b); ++i)
#define RFOR(i, a, b) for (int i = (b - 1); i >= (a); --i)
#define REP(i, n) FOR(i, 0, (n))
#define RREP(i, n) RFOR(i, 0, (n))
#define ITR(itr, mp) for (auto itr = (mp).begin(); itr != (mp).end(); ++itr)
#define RITR(itr, mp) for (auto itr = (mp).rbegin(); itr != (mp).rend(); ++itr)
#define range(i, a, b) ((a) <= (i) && (i) < (b))
#define debug(x) cout << #x << " = " << (x) << endl;
#define SP << " " <<
typedef pair<int, int> P;
#include <cstdint>
template <std::uint_fast64_t Modulus> class modint {
using u64 = std::uint_fast64_t;
u64 a;
public:
constexpr modint(const u64 x = 0) noexcept : a(x % Modulus) {}
constexpr u64 val() const noexcept { return a; }
constexpr modint operator+(const modint rhs) const noexcept {
return modint(*this) += rhs;
}
constexpr modint operator-(const modint rhs) const noexcept {
return modint(*this) -= rhs;
}
constexpr modint operator*(const modint rhs) const noexcept {
return modint(*this) *= rhs;
}
constexpr modint operator/(const modint rhs) const noexcept {
return modint(*this) /= rhs;
}
constexpr bool operator==(const modint rhs) const noexcept {
return modint(*this).val() == rhs.val();
}
modint &operator+=(const modint rhs) noexcept {
a += rhs.a;
if (a >= Modulus) {
a -= Modulus;
}
return *this;
}
modint &operator-=(const modint rhs) noexcept {
if (a < rhs.a) {
a += Modulus;
}
a -= rhs.a;
return *this;
}
modint &operator*=(const modint rhs) noexcept {
a = a * rhs.a % Modulus;
return *this;
}
modint &operator/=(modint rhs) noexcept {
u64 exp = Modulus - 2;
while (exp) {
if (exp % 2) {
*this *= rhs;
}
rhs *= rhs;
exp /= 2;
}
return *this;
}
};
using mint = modint<MOD>;
typedef vector<mint> vec;
typedef vector<vector<mint>> mat;
signed main() {
ios::sync_with_stdio(false);
cin.tie(0);
int n, k;
cin >> n >> k;
if (k % 2) {
cout << 0 << endl;
return 0;
}
int a[] = {1, 1, 1, 1, 2, 3,
1, 3, 7, 9, 4, 1,
4, 12, 24, 35, 24, 20,
1, 5, 18, 46, 93, 137,
148, 136, 100, 36, 1, 6,
25, 76, 187, 366, 591, 744,
884, 832, 716, 360, 252, 1,
7, 33, 115, 327, 765, 1523,
2553, 3696, 4852, 5708, 5892, 5452,
4212, 2844, 1764, 576, 1, 8,
42, 164, 524, 1400, 3226, 6436,
11323, 17640, 25472, 33280, 40520, 44240,
45512, 40608, 35496, 25632, 18108, 8064,
5184, 1, 9, 52, 224, 790,
2350, 6072, 13768, 27821, 50461, 83420,
127840, 182256, 242272, 301648, 350864, 382576,
389232, 373536, 332640, 273060, 208548, 136512,
81792, 46656, 14400, 1, 10, 63,
296, 1138, 3708, 10538, 26480, 59673,
121626, 226787, 390144, 628744, 949472, 1355952,
1826464, 2341600, 2833632, 3282464, 3584160, 3765600,
3719664, 3531924, 3093336, 2642364, 2010240, 1508544,
963072, 621504, 259200, 158400, 1, 11,
75, 381, 1582, 5582, 17222, 47194,
116457, 261163, 537459, 1022981, 1817652, 3040352,
4810720, 7230928, 10360160, 14178912, 18577792, 23327872,
28132048, 32571504, 36310464, 38903904, 40028724, 39552156,
37457388, 33941412, 29314944, 24179904, 18835776, 13777344,
9452736, 5716800, 3211200, 1742400, 518400, 1,
12, 88, 480, 2137, 8096, 26860,
79376, 211811, 515308, 1153268, 2391936, 4633331,
8438664, 14557048, 23874176, 37407760, 56117824, 80906752,
112162240, 150052400, 193572736, 241706624, 291576384, 341323776,
386160048, 424359540, 450394992, 464545584, 461528208, 446428476,
413557632, 373573440, 321120000, 268449408, 210332160, 162330624,
112550400, 77788800, 46540800, 28497600, 11404800, 6739200,
1, 13, 102, 594, 2819, 11391,
40344, 127508, 364587, 952559, 2293742, 5126898,
10710633, 21042989, 39117852, 69175664, 116857024, 189256368,
294745440, 442503456, 641759376, 900689616, 225195321, 617201401,
74227554, 586823330, 140227131, 711888699, 274217080, 795069832,
242715461, 585116357, 796764497, 861974465, 769155485, 525176285,
146566301, 650715556, 73773796, 455145195, 828946802, 226153586,
685663993, 216281593, 828705600, 536385600, 309484800, 166924800,
87609600, 25401600, 1, 14, 117, 724,
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657391663, 618370464, 182199238, 863262145, 671572410, 926093081,
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469444206, 333826539, 382006323, 404644652, 86283892, 711449573,
711524895, 240243757, 137744674, 52585102, 502954368, 568353873,
424768720, 673699213, 453807002, 277591996, 614231800, 858886730,
933633627, 855960053, 795294602, 320736325, 160050137, 741837408,
875372187, 933116510, 439299086, 339530899, 998809886, 988163112,
414204450, 626581582, 425958595, 547450689, 257877182, 25212376,
487090639, 693248108, 736165691, 261048117, 530252319, 667332870,
224234420, 283256778, 493030047, 381167115, 959191937, 567700201,
408470930, 456733167, 877572444, 640070139, 177231251, 53889209,
630925282, 764167042, 903138510, 822950867, 161878067, 741376139,
620673064, 828400388, 989198090, 398235498, 335164252, 650259410,
895482301, 288920533, 986020511, 960531109, 692510577, 743863232,
159848129, 639142915, 658806616, 286815941, 569150064, 996156909,
474086872, 377428234, 108191201, 968576455, 934066962, 520785392,
648351310, 322768543, 500047228, 717012630, 366640002, 617370336,
747113890, 647615517, 420668064, 485924194, 28548015, 242698362,
20265134, 481161073, 780894508, 716872330, 925052871, 809234518,
209608950, 454869307, 42621234, 266915957, 548835092, 11648368,
200676498, 803279760, 609790836, 522043768, 787672824, 264643232,
571421826, 762085826, 854807719, 119023111, 660310435, 945098645,
838260736, 592383406, 728604232, 586121308, 18945549, 62079587,
8000021, 137221342, 936745518, 867913927, 937623778, 183088542,
624248829, 606106136, 815005922, 728188591, 164502140, 885086995,
646575964, 60630781, 250914884, 619961376, 835493684, 1794097,
350786557, 222634027, 605402916, 871984975, 140157610, 784428245,
701028584, 784157139, 199990301, 49282014, 806191394, 544636448,
696393844, 625422532, 306981977, 200109353, 819880255, 622554727,
966234587, 1715755, 884432882, 186517679, 414057470, 559202957,
356291776, 440462056, 76496043, 54502936, 82793754, 693820485,
333532789, 139408482, 538301356, 908601203, 663844984, 277481039,
494620179, 126148065, 101563902, 543304970, 40138848, 255494176,
250466774, 181548534, 183041503, 553027506, 468172977, 571880068,
685135214, 70030015, 431414252, 965377675, 285528459, 577690235,
3039911, 424468115, 149219671, 315258608, 442938842, 340124780,
620577523, 697442435, 606981307, 195766252, 513624332, 160814831,
144529981, 626344971, 929525101, 167384034, 985564306, 757660450,
674490248, 404160553, 218780132, 253152109, 588527766, 276135385,
293545669, 229980166, 406532593, 544661736, 944987368, 74067610,
979465423, 367319108, 691015763, 308068787, 270297211, 892899529,
571121326, 682341094, 508186314, 992592910, 570463576, 551864557,
443417375, 102996223, 180706669, 66278518, 547390018, 97982020,
377733797, 642211092, 809569594, 442856622, 912786312, 563198351,
549331531, 576357131, 891027263, 77805689, 816522985, 731749256,
313952972, 411776160, 795006290, 22615421, 348238413, 716260746,
223962550, 78670864, 47765882, 267128253, 587371111, 927656165,
192469863, 806624234, 136996971, 759497678, 646978177, 833527505,
472805550, 754214240, 960030895, 232746388, 490616131, 420542303,
904038549, 210637836, 74285318, 144447351, 742135765, 244372617,
87595635, 852731251, 594678505, 794681848, 228154101, 363702627,
673985808, 239196945, 836249623, 602064792, 462168907, 430511049,
331217937, 84426505, 529390112, 953694258, 768941491, 296949641,
617567965, 759210871, 554347066, 314959464, 855978152, 459336095,
416019714, 554419893, 643616814, 307318600, 193723511, 342506504,
737708842, 961578294, 644413804, 283651295, 449519877, 262823100,
438065978, 195660179, 15479674, 929627357, 712657286, 867475048,
618979059, 615899609, 290553872, 46585860, 675146342, 899293157,
138576244, 932939832, 413352510, 228638502, 577046541, 52412367,
271101119, 704058715, 716195674, 113738084, 976781966, 417637854,
201849275, 137988263, 703452509, 833173534, 774723430, 98520292,
647910333, 702073064, 101667724, 93613248, 4773372, 993672667,
598539625, 298728331, 547262186, 609550837, 42278975, 203431476,
764589375, 791435299, 273439277, 15186943, 247517820, 332116413,
672582410, 88991345, 573172714, 370502342, 495515460, 486357723,
529038430, 112617630, 9655079, 54905538, 630913486, 94540925,
694069860, 101033114, 601510215, 405093272, 877399916, 606786230,
712700446, 365826653, 440611748, 222502187, 628732942, 260127071,
415183336, 331627148, 603111841, 484627861, 252203062, 603610758,
918118836, 775502591, 558836403, 458735214, 903545723, 229008632,
239177179, 70767308, 751925156, 652119146, 980361868, 450630793,
63075950, 714904102, 795480239, 196855664, 446357279, 343343138,
751184330, 353543327, 265335039, 291055365, 141693974, 952501609,
772988967, 982806649, 295006336, 142133453, 389243658, 551050114,
837354729, 288032982, 926886748, 940810321, 996269340, 544323652,
123254721, 449847916, 164321665, 408440169, 540527971, 235735087,
384560805, 888470688, 711171300, 414716347, 219479361, 559050803,
610845133, 321258507, 296543705, 253557800, 771631909, 466270561,
966519146, 100544233, 474799959, 147649345, 956135303, 808272257,
279282920, 472357219, 422709994, 530025514, 999788009, 64593897,
709199531, 479060735, 311654131, 943520011, 427742758, 799287390,
782392773, 191335024, 830990096, 336010037, 237942831, 237453992,
695887098, 398366572, 529644737, 344086296, 862051533, 684436865,
317549101, 968659087, 366641438, 1, 49, 1272,
23124, 329180, 3895908, 39783804, 359447204, 925733384,
746545659, 165655001, 158091124, 719304162, 111160209, 171158550,
935012406, 874008903, 988755604, 608336289, 351327718, 211049418,
970686245, 441380023, 920727544, 396494781, 218114186, 934368772,
753990221, 203263446, 488226646, 946324350, 642441651, 816607227,
122420091, 629716118, 498106515, 488881569, 100763230, 814241373,
430998026, 986590664, 188596813, 238499794, 887765759, 719310391,
819612870, 840885905, 584773429, 811468143, 396065785, 368868801,
299761844, 617462619, 308704442, 206242421, 833439007, 106715469,
970135543, 972244832, 66232618, 207050932, 577078708, 955731123,
103929249, 632790957, 297717977, 280927805, 856143814, 140717794,
889342899, 570959166, 553036683, 311778062, 833874032, 321035571,
629235909, 60666525, 19636232, 889773198, 837811568, 283828621,
499062871, 459250525, 468391935, 389843786, 80632526, 462481073,
859711240, 66143264, 831825780, 518914304, 998480225, 496960804,
480385724, 483317701, 923742113, 771054094, 630267330, 478946945,
527928962, 674723787, 882998613, 123711144, 324674723, 964132061,
961988031, 65215295, 858250635, 924300325, 577545014, 241841560,
172586320, 726876085, 210684082, 897202470, 742850020, 161301259,
120853804, 344539574, 836860211, 667275920, 72688787, 930704832,
179668299, 861726583, 168665810, 834696469, 672920894, 419563732,
302874180, 454615268, 934181182, 119694911, 779976833, 216225187,
244379028, 586838513, 942544272, 397970796, 155525782, 435250288,
609294947, 697035870, 790138207, 313089121, 451259481, 904475234,
15500998, 428233316, 352796372, 805867626, 355791012, 191743365,
390372515, 86113794, 224579645, 34292553, 472538607, 244805809,
799547326, 350596592, 550928379, 248605526, 858957317, 809083222,
418025439, 717379009, 843111164, 748566980, 795763411, 344249103,
246799165, 468081584, 533360568, 97839725, 814208152, 370784820,
149643652, 648814350, 586462723, 179226570, 323415874, 413399345,
830824722, 901264775, 785155020, 673315179, 883230707, 320461657,
209574161, 896187167, 641537195, 580708044, 615201169, 907420567,
226969633, 44823693, 653925850, 618905940, 556249274, 683808190,
595045606, 406684866, 817926872, 498013040, 741888764, 255307898,
750076370, 226664326, 45791371, 138249186, 182084615, 925519009,
32002450, 507648904, 36302093, 164244320, 134446595, 176304234,
443232913, 204696272, 377207389, 330407781, 317016375, 255990328,
346121343, 776903928, 865285835, 180645765, 94169320, 523805568,
66571932, 958229276, 706032441, 157122799, 174128102, 265560802,
960871567, 814597354, 840895548, 702037, 848074074, 17426708,
276377856, 55696613, 206160180, 32721003, 453495162, 587538197,
204676036, 610254246, 936113705, 842825687, 202272844, 145230437,
624393323, 739106533, 700708897, 523328161, 691038973, 656087189,
213848962, 927815456, 921255504, 609475698, 113463094, 529085932,
807792149, 579407091, 163833313, 694176222, 471399591, 346973697,
718259544, 297359882, 892552532, 451373341, 120883534, 8029910,
624607649, 606649877, 815313728, 231664869, 673443919, 615486405,
94571095, 110823650, 950289120, 646876432, 928906934, 684469503,
297251947, 919054473, 285157267, 967739040, 274416446, 465229888,
656873003, 825576691, 53305194, 539107135, 609069516, 669008004,
585520763, 526072937, 91836656, 101778461, 538228891, 424599066,
719851020, 234795290, 701214554, 914481398, 497763115, 504286064,
212679726, 409710596, 134500525, 154608785, 554889670, 267547678,
851784437, 749366191, 681515762, 587313005, 604179607, 297539881,
51380469, 30897443, 988568867, 430543091, 168358864, 325894509,
131217074, 122226126, 289735266, 2541560, 697428098, 339809826,
339814711, 568813016, 256466301, 865405619, 710940331, 7424767,
660900037, 729644940, 444, 450105203, 690939247, 459755659,
92556107, 42398758, 782901298, 483436309, 73995240, 784415989,
602791285, 655683750, 744368335, 684929720, 939318197, 1937536,
94209990, 544006669, 195169186, 297173575, 151918090, 559870646,
425964491, 818978660, 571568643, 60393204, 415731654, 547756555,
991386612, 383053326, 997830526, 963081859, 107336308, 898219937,
906988404, 550036125, 981857264, 691293427, 481189647, 501756531,
316529056, 476096058, 168221459, 165690115, 553028411, 960794528,
453386272, 963889156, 71983103, 494867184, 462967097, 635240847,
989817132, 23786457, 968645733, 163475174, 884798755, 971346358,
8231228, 947835970, 751371876, 21594745, 702982989, 997528759,
30899466, 874470660, 839706683, 64336797, 183002010, 415355406,
851375333, 802315034, 662347966, 459017349, 83113197, 807783874,
686211775, 665742332, 548408223, 38712773, 947065654, 224142524,
544199777, 554457822, 161813447, 59932464, 324817969, 826816639,
159675767, 610260222, 802832692, 962264291, 230527850, 654881259,
493134625, 56109407, 491401533, 163680598, 892934948, 889185132,
78662275, 741528574, 616484511, 204394884, 120980232, 4959172,
884202370, 468625389, 987185268, 797914336, 292935354, 542176515,
965256954, 25044127, 701524209, 669825969, 264620823, 983915826,
463815578, 325409981, 142164710, 946513145, 626025918, 890502327,
456729879, 921471703, 889764153, 10834930, 550258959, 888111963,
456661896, 560525119, 254574198, 379302005, 359197537, 748972811,
432885247, 174603143, 495215302, 304225805, 499574, 89067439,
956588800, 479903186, 900293862, 918419160, 874312513, 779518268,
750190343, 34999197, 204187488, 29703716, 310295240, 212734818,
705461990, 880565621, 542764103, 578132976, 871657196, 920555643,
635330221, 603836039, 905337022, 446003049, 531829391, 914627500,
109964459, 793773872, 883594493, 588890899, 761763418, 850946563,
47045637, 406265955, 398330580, 175033998, 98562597, 74022406,
109783010, 888406279, 62923507, 851720727, 920064661, 659715101,
731241623, 740764931, 68490942, 26861674, 832409630, 156628069,
65837301, 277330611, 504531610, 621094682, 513712789, 824543274,
863846088, 522929299, 50674845, 205053841, 391074024, 703020653,
598865065, 977680558, 126857946, 571772915, 596794646, 195429545,
328266420, 36051456, 451216030, 522276964, 948367998, 561406981,
389510759, 585943971, 108053297, 459413669, 288907310, 136029766,
802792879, 520247265, 414339912, 337619243, 597859489, 40005835,
350918, 321070418, 199829979, 141119131, 515535428, 350920730,
314377413, 808898947, 900198037, 799762368, 570476717, 244997759,
402733111, 626061442, 103647198, 938528989, 898060580, 652361018,
641847472, 149112119, 134262079, 887185896, 606038263, 859408453,
950373236, 692335861, 405660442, 565431386, 959094106, 393940636,
423632434, 612413824, 143336067, 663257107, 9730523, 471491852,
112828340, 936303905, 998673093, 55233966, 416039620, 144081002,
565258672, 539355694, 202448366, 14002378, 539019751, 307827209,
288622328, 788194350, 570120788, 965430343, 472467292};
k /= 2;
int id = 0;
FOR(i, 1, n + 1) {
int sum = 0, now = i - 1;
FOR(j, 1, i + 1) sum += abs(now), now -= 2;
sum /= 2;
if (i == n) {
if (k > sum)
cout << 0 << endl;
else {
id += k;
cout << a[id] << endl;
}
return 0;
} else
id += sum + 1;
// debug(id);
}
return 0;
} | replace | 1,922 | 1,924 | 1,922 | 1,928 | 0 | |
p02974 | C++ | Runtime Error | #include <cstdint>
#include <cstdlib>
#include <iostream>
template <typename T> void fin(T const &t) {
std::cout << t << std::endl;
exit(0);
}
// mint
int64_t const MOD = 1e9 + 7;
template <int64_t Prime> struct mod_int {
int64_t v_;
mod_int(int64_t x = 0) : v_(x) { normalize(); }
void normalize() { ((v_ %= Prime) += Prime) %= Prime; }
mod_int operator+=(mod_int const &r) {
(v_ += r.v_) %= Prime;
return *this;
}
mod_int operator-=(mod_int const &r) {
(v_ += Prime - r.v_) %= Prime;
return *this;
}
mod_int operator*=(mod_int const &r) {
(v_ *= r.v_) %= Prime;
return *this;
}
mod_int operator+(mod_int const &r) {
mod_int res(*this);
return res += r;
}
mod_int operator-(mod_int const &r) {
mod_int res(*this);
return res -= r;
}
mod_int operator*(mod_int const &r) {
mod_int res(*this);
return res *= r;
}
mod_int pow(int x) const {
int64_t res = 1, v = v_;
while (x > 0) {
if (x & 1)
(res *= v) %= Prime;
x /= 2;
(v *= v) %= Prime;
}
return mod_int(res);
}
mod_int inv() const { return pow(Prime - 2); }
};
typedef mod_int<MOD> mint;
// optional
template <typename T> struct optional {
bool valid;
T v_;
optional() : valid(false) {}
optional &operator=(T const &v) {
v_ = v;
valid = true;
return *this;
}
T &operator*() { return v_; }
T const &operator*() const { return v_; }
};
int const MAXN = 50;
int const MAXK = MAXN * MAXN;
optional<mint> dp[MAXN][MAXN][MAXK];
mint calc(int i, int j, int k) {
if (dp[i][j][k].valid)
return *dp[i][j][k];
mint res;
int new_k = k - j - j;
if (new_k >= 0 && i >= 1) {
if (i - 1 >= j)
res += mint(j + j + 1) * calc(i - 1, j, new_k);
if (i - 2 >= j)
res += mint(j + 1) * (j + 1) * calc(i - 1, j + 1, new_k);
if (i >= j && j >= 1)
res += calc(i - 1, j - 1, new_k);
}
return *(dp[i][j][k] = res);
}
int main() {
int n, k;
std::cin >> n >> k;
dp[0][0][0] = 1;
fin(calc(n, 0, k).v_);
return 0;
}
| #include <cstdint>
#include <cstdlib>
#include <iostream>
template <typename T> void fin(T const &t) {
std::cout << t << std::endl;
exit(0);
}
// mint
int64_t const MOD = 1e9 + 7;
template <int64_t Prime> struct mod_int {
int64_t v_;
mod_int(int64_t x = 0) : v_(x) { normalize(); }
void normalize() { ((v_ %= Prime) += Prime) %= Prime; }
mod_int operator+=(mod_int const &r) {
(v_ += r.v_) %= Prime;
return *this;
}
mod_int operator-=(mod_int const &r) {
(v_ += Prime - r.v_) %= Prime;
return *this;
}
mod_int operator*=(mod_int const &r) {
(v_ *= r.v_) %= Prime;
return *this;
}
mod_int operator+(mod_int const &r) {
mod_int res(*this);
return res += r;
}
mod_int operator-(mod_int const &r) {
mod_int res(*this);
return res -= r;
}
mod_int operator*(mod_int const &r) {
mod_int res(*this);
return res *= r;
}
mod_int pow(int x) const {
int64_t res = 1, v = v_;
while (x > 0) {
if (x & 1)
(res *= v) %= Prime;
x /= 2;
(v *= v) %= Prime;
}
return mod_int(res);
}
mod_int inv() const { return pow(Prime - 2); }
};
typedef mod_int<MOD> mint;
// optional
template <typename T> struct optional {
bool valid;
T v_;
optional() : valid(false) {}
optional &operator=(T const &v) {
v_ = v;
valid = true;
return *this;
}
T &operator*() { return v_; }
T const &operator*() const { return v_; }
};
int const MAXN = 50;
int const MAXK = MAXN * MAXN;
optional<mint> dp[MAXN + 1][MAXN + 1][MAXK + 1];
mint calc(int i, int j, int k) {
if (dp[i][j][k].valid)
return *dp[i][j][k];
mint res;
int new_k = k - j - j;
if (new_k >= 0 && i >= 1) {
if (i - 1 >= j)
res += mint(j + j + 1) * calc(i - 1, j, new_k);
if (i - 2 >= j)
res += mint(j + 1) * (j + 1) * calc(i - 1, j + 1, new_k);
if (i >= j && j >= 1)
res += calc(i - 1, j - 1, new_k);
}
return *(dp[i][j][k] = res);
}
int main() {
int n, k;
std::cin >> n >> k;
dp[0][0][0] = 1;
fin(calc(n, 0, k).v_);
return 0;
}
| replace | 70 | 71 | 70 | 71 | 127 | /tmp/25238b23-6a43-49c7-a44c-2a70cfc065d4.out: error while loading shared libraries: libc.so.6: failed to map segment from shared object
|
p02974 | C++ | Runtime Error | #include <bits/stdc++.h>
#define FOR(i, a, n) for (ll i = (ll)a; i < (ll)n; i++)
#define FORR(i, n) for (ll i = (ll)n - 1LL; i >= 0LL; i--)
#define rep(i, n) FOR(i, 0, n)
#define ALL(x) ((x).begin(), (x).end())
using namespace std;
using ll = long long;
template <typename T> using V = vector<T>;
constexpr int Mod = 998244353;
constexpr int mod = 1e9 + 7;
constexpr ll inf = 1LL << 60;
template <typename T> constexpr bool chmax(T &a, const T &b) {
if (a >= b)
return false;
a = b;
return true;
}
template <typename T> constexpr bool chmin(T &a, const T &b) {
if (a <= b)
return false;
a = b;
return true;
}
/*-------------------------------------------*/
template <int M> class ModInt {
int x;
public:
constexpr ModInt() : x(0) {}
constexpr ModInt(int64_t y) : x(y >= 0 ? y % M : (M - (-y) % M) % M) {}
constexpr ModInt &operator+=(const ModInt &p) {
if ((x += p.x) >= M)
x -= M;
return *this;
}
constexpr ModInt &operator-=(const ModInt &p) {
if ((x += M - p.x) >= M)
x -= M;
return *this;
}
constexpr ModInt &operator*=(const ModInt &p) {
x = (int)(1LL * x * p.x % M);
return *this;
}
constexpr ModInt &operator/=(const ModInt &p) {
*this *= p.inverse();
return *this;
}
constexpr ModInt operator-() const { return ModInt(-x); }
constexpr ModInt operator+(const ModInt &p) const {
return ModInt(*this) += p;
}
constexpr ModInt operator-(const ModInt &p) const {
return ModInt(*this) -= p;
}
constexpr ModInt operator*(const ModInt &p) const {
return ModInt(*this) *= p;
}
constexpr ModInt operator/(const ModInt &p) const {
return ModInt(*this) /= p;
}
constexpr bool operator==(const ModInt &p) const { return x == p.x; }
constexpr bool operator!=(const ModInt &p) const { return x != p.x; }
constexpr ModInt inverse() const {
int a = x, b = M, u = 1, v = 0, t = 0;
while (b > 0) {
t = a / b;
swap(a -= t * b, b);
swap(u -= t * v, v);
}
return ModInt(u);
}
constexpr ModInt pow(const int64_t &n) const {
ModInt ret(1), mul(x);
int64_t k = n % (M - 1);
if (k < 0)
k += M - 1;
while (k > 0) {
if (k & 1)
ret *= mul;
mul *= mul;
k >>= 1;
}
return ret;
}
constexpr friend ostream &operator<<(ostream &os, const ModInt &p) {
return os << p.x;
}
constexpr friend istream &operator>>(istream &is, ModInt &a) {
int64_t t = 0;
is >> t;
a = ModInt(t);
return (is);
}
};
using modint = ModInt<mod>;
int main() {
cin.tie(0);
ios::sync_with_stdio(0);
int n, k;
cin >> n >> k;
V<V<V<modint>>> dp(n + 1, V<V<modint>>(n, V<modint>(k + 1)));
dp[0][0][0] = 1;
rep(i, n) rep(j, n) FOR(l, j * 2, k + 1) {
dp[i + 1][j][l] = dp[i][j][l - 2 * j] * (2 * j + 1);
dp[i + 1][j][l] += dp[i][j + 1][l - 2 * j] * (j + 1) * (j + 1);
if (j)
dp[i + 1][j][l] += dp[i][j - 1][l - 2 * j];
}
cout << dp[n][0][k] << endl;
return 0;
} | #include <bits/stdc++.h>
#define FOR(i, a, n) for (ll i = (ll)a; i < (ll)n; i++)
#define FORR(i, n) for (ll i = (ll)n - 1LL; i >= 0LL; i--)
#define rep(i, n) FOR(i, 0, n)
#define ALL(x) ((x).begin(), (x).end())
using namespace std;
using ll = long long;
template <typename T> using V = vector<T>;
constexpr int Mod = 998244353;
constexpr int mod = 1e9 + 7;
constexpr ll inf = 1LL << 60;
template <typename T> constexpr bool chmax(T &a, const T &b) {
if (a >= b)
return false;
a = b;
return true;
}
template <typename T> constexpr bool chmin(T &a, const T &b) {
if (a <= b)
return false;
a = b;
return true;
}
/*-------------------------------------------*/
template <int M> class ModInt {
int x;
public:
constexpr ModInt() : x(0) {}
constexpr ModInt(int64_t y) : x(y >= 0 ? y % M : (M - (-y) % M) % M) {}
constexpr ModInt &operator+=(const ModInt &p) {
if ((x += p.x) >= M)
x -= M;
return *this;
}
constexpr ModInt &operator-=(const ModInt &p) {
if ((x += M - p.x) >= M)
x -= M;
return *this;
}
constexpr ModInt &operator*=(const ModInt &p) {
x = (int)(1LL * x * p.x % M);
return *this;
}
constexpr ModInt &operator/=(const ModInt &p) {
*this *= p.inverse();
return *this;
}
constexpr ModInt operator-() const { return ModInt(-x); }
constexpr ModInt operator+(const ModInt &p) const {
return ModInt(*this) += p;
}
constexpr ModInt operator-(const ModInt &p) const {
return ModInt(*this) -= p;
}
constexpr ModInt operator*(const ModInt &p) const {
return ModInt(*this) *= p;
}
constexpr ModInt operator/(const ModInt &p) const {
return ModInt(*this) /= p;
}
constexpr bool operator==(const ModInt &p) const { return x == p.x; }
constexpr bool operator!=(const ModInt &p) const { return x != p.x; }
constexpr ModInt inverse() const {
int a = x, b = M, u = 1, v = 0, t = 0;
while (b > 0) {
t = a / b;
swap(a -= t * b, b);
swap(u -= t * v, v);
}
return ModInt(u);
}
constexpr ModInt pow(const int64_t &n) const {
ModInt ret(1), mul(x);
int64_t k = n % (M - 1);
if (k < 0)
k += M - 1;
while (k > 0) {
if (k & 1)
ret *= mul;
mul *= mul;
k >>= 1;
}
return ret;
}
constexpr friend ostream &operator<<(ostream &os, const ModInt &p) {
return os << p.x;
}
constexpr friend istream &operator>>(istream &is, ModInt &a) {
int64_t t = 0;
is >> t;
a = ModInt(t);
return (is);
}
};
using modint = ModInt<mod>;
int main() {
cin.tie(0);
ios::sync_with_stdio(0);
int n, k;
cin >> n >> k;
V<V<V<modint>>> dp(n + 1, V<V<modint>>(n + 1, V<modint>(k + 1)));
dp[0][0][0] = 1;
rep(i, n) rep(j, n) FOR(l, j * 2, k + 1) {
dp[i + 1][j][l] = dp[i][j][l - 2 * j] * (2 * j + 1);
dp[i + 1][j][l] += dp[i][j + 1][l - 2 * j] * (j + 1) * (j + 1);
if (j)
dp[i + 1][j][l] += dp[i][j - 1][l - 2 * j];
}
cout << dp[n][0][k] << endl;
return 0;
} | replace | 107 | 108 | 107 | 108 | 0 | |
p02974 | C++ | Runtime Error | #include <bits/stdc++.h>
#define MIN_INT -2147483648
#define MAX_INT 2147483647
#define MIN_LONG -9223372036854775808L
#define MAX_LONG 9223372036854775807L
#define long long long int
using namespace std;
// @author: pashka
const long MOD = 1000000007;
int main() {
ios::sync_with_stdio(false);
int n, k;
cin >> n >> k;
vector<vector<long>> d(2 * n * n, vector<long>(n + 1));
vector<vector<long>> dd(2 * n * n, vector<long>(n + 1));
d[n * n][0] = 1;
for (int i = 0; i < n; i++) {
for (int q = 0; q < 2 * n * n; q++) {
for (int c = 0; c <= n; c++) {
dd[q][c] = 0;
}
}
// cout << i << "\n";
for (int q = 0; q < 2 * n * n; q++) {
for (int c = 0; c <= n; c++) {
if (d[q][c] == 0)
continue;
// cout << q << " " << c << " " << d[q][c] << "\n";
dd[q - i - i][c + 1] += d[q][c];
dd[q - i - i][c + 1] %= MOD;
dd[q][c] += d[q][c];
dd[q][c] %= MOD;
if (c > 0) {
dd[q + i + i][c - 1] += d[q][c] * c * c;
dd[q + i + i][c - 1] %= MOD;
dd[q][c] += d[q][c] * c * 2;
dd[q][c] %= MOD;
}
}
}
swap(d, dd);
}
// cout << n << "\n";
// for (int q = 0; q < 2 * n * n; q++) {
// for (int c = 0; c <= n; c++) {
// if (d[q][c] == 0) continue;
// cout << q << " " << c << " " << d[q][c] << "\n";
// }
// }
cout << d[n * n + k][0] << "\n";
return 0;
} | #include <bits/stdc++.h>
#define MIN_INT -2147483648
#define MAX_INT 2147483647
#define MIN_LONG -9223372036854775808L
#define MAX_LONG 9223372036854775807L
#define long long long int
using namespace std;
// @author: pashka
const long MOD = 1000000007;
int main() {
ios::sync_with_stdio(false);
int n, k;
cin >> n >> k;
vector<vector<long>> d(2 * n * n + 1, vector<long>(n + 1));
vector<vector<long>> dd(2 * n * n + 1, vector<long>(n + 1));
d[n * n][0] = 1;
for (int i = 0; i < n; i++) {
for (int q = 0; q < 2 * n * n; q++) {
for (int c = 0; c <= n; c++) {
dd[q][c] = 0;
}
}
// cout << i << "\n";
for (int q = 0; q < 2 * n * n; q++) {
for (int c = 0; c <= n; c++) {
if (d[q][c] == 0)
continue;
// cout << q << " " << c << " " << d[q][c] << "\n";
dd[q - i - i][c + 1] += d[q][c];
dd[q - i - i][c + 1] %= MOD;
dd[q][c] += d[q][c];
dd[q][c] %= MOD;
if (c > 0) {
dd[q + i + i][c - 1] += d[q][c] * c * c;
dd[q + i + i][c - 1] %= MOD;
dd[q][c] += d[q][c] * c * 2;
dd[q][c] %= MOD;
}
}
}
swap(d, dd);
}
// cout << n << "\n";
// for (int q = 0; q < 2 * n * n; q++) {
// for (int c = 0; c <= n; c++) {
// if (d[q][c] == 0) continue;
// cout << q << " " << c << " " << d[q][c] << "\n";
// }
// }
cout << d[n * n + k][0] << "\n";
return 0;
} | replace | 20 | 22 | 20 | 22 | 0 | |
p02974 | C++ | Runtime Error | #include <bits/stdc++.h>
using namespace std;
using ll = long long;
using P = pair<int, int>;
using vi = vector<int>;
using vvi = vector<vector<int>>;
using vll = vector<ll>;
using vvll = vector<vector<ll>>;
const double eps = 1e-10;
const int MOD = 1000000007;
const int INF = 1000000000;
const ll LINF = 1ll << 50;
template <typename T> void printv(const vector<T> &s) {
for (int i = 0; i < (int)(s.size()); ++i) {
cout << s[i];
if (i == (int)(s.size()) - 1)
cout << endl;
else
cout << " ";
}
}
int main() {
cin.tie(0);
cout << fixed << setprecision(10);
ll n, m;
cin >> n >> m;
vector<vvll> dp(n + 1, vvll(n + 1, vll(m + 1, 0)));
dp[0][0][0] = 1;
for (int i = 0; i < n; ++i) {
for (int j = 0; j <= n; ++j) {
for (int k = 0; k <= m; ++k) {
int tmpk = k + 2 * j;
if (0 <= tmpk && tmpk <= m) {
dp[i + 1][j][tmpk] += dp[i][j][k];
dp[i + 1][j][tmpk] %= MOD;
dp[i + 1][j + 1][tmpk] += dp[i][j][k];
dp[i + 1][j + 1][tmpk] %= MOD;
dp[i + 1][j][tmpk] += j * dp[i][j][k] % MOD;
dp[i + 1][j][tmpk] %= MOD;
if (j > 0)
dp[i + 1][j - 1][tmpk] += j * j % MOD * dp[i][j][k] % MOD;
if (j > 0)
dp[i + 1][j - 1][tmpk] %= MOD;
dp[i + 1][j][tmpk] += j * dp[i][j][k] % MOD;
dp[i + 1][j][tmpk] %= MOD;
}
}
}
}
cout << dp[n][0][m] << endl;
}
| #include <bits/stdc++.h>
using namespace std;
using ll = long long;
using P = pair<int, int>;
using vi = vector<int>;
using vvi = vector<vector<int>>;
using vll = vector<ll>;
using vvll = vector<vector<ll>>;
const double eps = 1e-10;
const int MOD = 1000000007;
const int INF = 1000000000;
const ll LINF = 1ll << 50;
template <typename T> void printv(const vector<T> &s) {
for (int i = 0; i < (int)(s.size()); ++i) {
cout << s[i];
if (i == (int)(s.size()) - 1)
cout << endl;
else
cout << " ";
}
}
int main() {
cin.tie(0);
cout << fixed << setprecision(10);
ll n, m;
cin >> n >> m;
vector<vvll> dp(n + 1, vvll(n + 2, vll(m + 1, 0)));
dp[0][0][0] = 1;
for (int i = 0; i < n; ++i) {
for (int j = 0; j <= n; ++j) {
for (int k = 0; k <= m; ++k) {
int tmpk = k + 2 * j;
if (0 <= tmpk && tmpk <= m) {
dp[i + 1][j][tmpk] += dp[i][j][k];
dp[i + 1][j][tmpk] %= MOD;
dp[i + 1][j + 1][tmpk] += dp[i][j][k];
dp[i + 1][j + 1][tmpk] %= MOD;
dp[i + 1][j][tmpk] += j * dp[i][j][k] % MOD;
dp[i + 1][j][tmpk] %= MOD;
if (j > 0)
dp[i + 1][j - 1][tmpk] += j * j % MOD * dp[i][j][k] % MOD;
if (j > 0)
dp[i + 1][j - 1][tmpk] %= MOD;
dp[i + 1][j][tmpk] += j * dp[i][j][k] % MOD;
dp[i + 1][j][tmpk] %= MOD;
}
}
}
}
cout << dp[n][0][m] << endl;
}
| replace | 26 | 27 | 26 | 27 | 0 | |
p02974 | C++ | Runtime Error | #include <bits/stdc++.h>
using namespace std;
using VS = vector<string>;
using LL = long long;
using VI = vector<int>;
using VVI = vector<VI>;
using PII = pair<int, int>;
using PLL = pair<LL, LL>;
using VL = vector<LL>;
using VVL = vector<VL>;
#define ALL(a) begin((a)), end((a))
#define RALL(a) (a).rbegin(), (a).rend()
#define SZ(a) int((a).size())
#define SORT(c) sort(ALL((c)))
#define RSORT(c) sort(RALL((c)))
#define UNIQ(c) (c).erase(unique(ALL((c))), end((c)))
#define FOR(i, s, e) for (int(i) = (s); (i) < (e); (i)++)
#define FORR(i, s, e) for (int(i) = (s); (i) > (e); (i)--)
// #pragma GCC optimize ("-O3")
#ifdef YANG33
#include "mydebug.hpp"
#else
#define DD(x)
#endif
const int INF = 1e9;
const LL LINF = 1e16;
const LL MOD = 1000000007;
const double PI = acos(-1.0);
/* ----- 2019/07/20 Problem: ABC 134 F / Link:
* http://abc134.contest.atcoder.jp/tasks/abc134_f ----- */
int test(int n, int k) {
vector<int> p(n);
iota(p.begin(), p.end(), 1);
int ans = 0;
do {
int sum = 0;
FOR(i, 0, n) { sum += abs((i + 1) - p[i]); }
ans += sum == k;
} while (next_permutation(p.begin(), p.end()));
return ans;
}
void maintest() {
int n;
while (cin >> n, n) {
FOR(k, 0, n * n + 1) { cout << test(n, k) << ", "; }
cout << endl;
cout << "---" << endl;
}
}
LL str_mod(const string &s, LL mod) {
LL res = 0;
for (auto c : s) {
res *= 10;
res += (c - '0');
res %= mod;
}
return res;
}
void cap() {
string i, n;
vector<vector<LL>> x(51);
int id = -1;
while (cin >> i >> n) {
if (n == "1") {
id++;
}
if (id <= 50)
x[id].push_back(str_mod(n, LL(1e9 + 7)));
}
cout << "map<PII,int>m={";
FOR(y, 1, 8) {
int cnt = 0;
for (auto it : x[y]) {
cout << "{{" << y << "," << cnt * 2 << "},";
cout << "" << it << "},";
cnt++;
}
}
cout << "};";
}
// map<PII, int>m = {
// 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// };
void solve_umekomi() {
map<PII, int> m;
int n, k;
cin >> n >> k;
if (k % 2 == 1)
cout << 0 << endl;
else {
cout << m[PII(n, k)] << endl;
}
}
template <std::uint_least32_t MODULO> class modint {
public:
using uint32 = std::uint_least32_t;
using uint64 = std::uint_least64_t;
using iint64 = std::int_fast64_t;
class optimize_tag_t {};
static constexpr optimize_tag_t optimize_tag{};
public:
using value_type = uint32;
value_type a;
static constexpr value_type cst(iint64 x) noexcept {
x %= static_cast<iint64>(MODULO);
if (x < static_cast<iint64>(0)) {
x += static_cast<iint64>(MODULO);
}
return static_cast<value_type>(x);
}
constexpr modint(optimize_tag_t, const value_type &x) noexcept : a(x) {}
constexpr modint() noexcept : a(static_cast<value_type>(0)) {}
constexpr modint(const iint64 &x) noexcept : a(cst(x)) {}
constexpr modint operator+(const modint &o) const noexcept {
return modint(optimize_tag, a + o.a < MODULO ? a + o.a : a + o.a - MODULO);
}
constexpr modint operator-(const modint &o) const noexcept {
return modint(optimize_tag, a < o.a ? a + MODULO - o.a : a - o.a);
}
constexpr modint operator*(const modint &o) const noexcept {
return modint(optimize_tag,
static_cast<value_type>(static_cast<uint64>(a) *
static_cast<uint64>(o.a) %
static_cast<uint64>(MODULO)));
}
constexpr modint operator/(const modint &o) const {
return modint(optimize_tag,
static_cast<value_type>(static_cast<uint64>(a) *
static_cast<uint64>((~o).a) %
static_cast<uint64>(MODULO)));
}
modint &operator+=(const modint &o) noexcept {
if ((a += o.a) >= MODULO)
a -= MODULO;
return *this;
}
modint &operator-=(const modint &o) noexcept {
if (a < o.a)
a += MODULO;
a -= o.a;
return *this;
}
modint &operator*=(const modint &o) noexcept {
a = static_cast<value_type>(static_cast<uint64>(a) *
static_cast<uint64>(o.a) %
static_cast<uint64>(MODULO));
return *this;
}
modint &operator/=(const modint &o) {
a = static_cast<uint64>(a) * (~o).a % MODULO;
return *this;
}
constexpr modint inverse() const noexcept {
assert(a != static_cast<value_type>(0) && "0 does not have inverse");
return pow(static_cast<uint64>(MODULO - static_cast<value_type>(2)));
}
constexpr modint operator~() const noexcept { return inverse(); }
constexpr modint operator-() const noexcept {
if (a == static_cast<value_type>(0)) {
return modint(optimize_tag, static_cast<value_type>(0));
} else {
return modint(optimize_tag, MODULO - a);
}
}
modint &operator++() noexcept {
if (++a == MODULO) {
a = static_cast<value_type>(0);
}
return *this;
}
modint &operator--() noexcept {
if (a == static_cast<value_type>(0)) {
a = MODULO;
}
--a;
return *this;
}
constexpr bool operator==(const modint &o) const noexcept { return a == o.a; }
constexpr bool operator!=(const modint &o) const noexcept { return a != o.a; }
constexpr bool operator<(const modint &o) const noexcept { return a < o.a; }
constexpr bool operator<=(const modint &o) const noexcept { return a <= o.a; }
constexpr bool operator>(const modint &o) const noexcept { return a > o.a; }
constexpr bool operator>=(const modint &o) const noexcept { return a >= o.a; }
constexpr explicit operator bool() const noexcept { return a; }
constexpr explicit operator value_type() const noexcept { return a; }
modint pow(iint64 inx) const noexcept {
if (inx < 0)
assert(a != static_cast<value_type>(0) && "not pow index < 0");
uint64 x = inx;
uint64 t = a, u = 1;
while (x) {
if (x & 1)
u = u * t % MODULO;
t = (t * t) % MODULO;
x >>= 1;
}
return modint(optimize_tag, static_cast<value_type>(u));
}
constexpr value_type get() const noexcept { return a; }
};
using mint = modint<MOD>;
mint dp[51][51][2503];
void solve_dp() {
LL N, score;
cin >> N >> score;
dp[0][0][0] = 1;
// (i,j left, score sum)
FOR(i, 0, N) {
FOR(j, 0, i + 1) {
FOR(k, 0, score + 1) {
{ // o---o
int nj = j;
dp[i + 1][nj][k + 2 * nj] += dp[i][j][k];
}
{ // o...o
int nj = j + 1;
dp[i + 1][nj][k + 2 * nj] += dp[i][j][k];
}
{ // o/...o
int nj = j;
dp[i + 1][nj][k + 2 * nj] += dp[i][j][k] * (2 * j);
}
if (j) { // o/..\o
int nj = j - 1;
dp[i + 1][nj][k + 2 * nj] += dp[i][j][k] * (j * j);
}
}
}
}
mint ans = dp[N][0][score];
cout << ans.get() << "\n";
}
int main() {
cin.tie(0);
ios_base::sync_with_stdio(false);
// maintest();
// cap();
// return 0;
// solve_umekomi();
solve_dp();
return 0;
}
| #include <bits/stdc++.h>
using namespace std;
using VS = vector<string>;
using LL = long long;
using VI = vector<int>;
using VVI = vector<VI>;
using PII = pair<int, int>;
using PLL = pair<LL, LL>;
using VL = vector<LL>;
using VVL = vector<VL>;
#define ALL(a) begin((a)), end((a))
#define RALL(a) (a).rbegin(), (a).rend()
#define SZ(a) int((a).size())
#define SORT(c) sort(ALL((c)))
#define RSORT(c) sort(RALL((c)))
#define UNIQ(c) (c).erase(unique(ALL((c))), end((c)))
#define FOR(i, s, e) for (int(i) = (s); (i) < (e); (i)++)
#define FORR(i, s, e) for (int(i) = (s); (i) > (e); (i)--)
// #pragma GCC optimize ("-O3")
#ifdef YANG33
#include "mydebug.hpp"
#else
#define DD(x)
#endif
const int INF = 1e9;
const LL LINF = 1e16;
const LL MOD = 1000000007;
const double PI = acos(-1.0);
/* ----- 2019/07/20 Problem: ABC 134 F / Link:
* http://abc134.contest.atcoder.jp/tasks/abc134_f ----- */
int test(int n, int k) {
vector<int> p(n);
iota(p.begin(), p.end(), 1);
int ans = 0;
do {
int sum = 0;
FOR(i, 0, n) { sum += abs((i + 1) - p[i]); }
ans += sum == k;
} while (next_permutation(p.begin(), p.end()));
return ans;
}
void maintest() {
int n;
while (cin >> n, n) {
FOR(k, 0, n * n + 1) { cout << test(n, k) << ", "; }
cout << endl;
cout << "---" << endl;
}
}
LL str_mod(const string &s, LL mod) {
LL res = 0;
for (auto c : s) {
res *= 10;
res += (c - '0');
res %= mod;
}
return res;
}
void cap() {
string i, n;
vector<vector<LL>> x(51);
int id = -1;
while (cin >> i >> n) {
if (n == "1") {
id++;
}
if (id <= 50)
x[id].push_back(str_mod(n, LL(1e9 + 7)));
}
cout << "map<PII,int>m={";
FOR(y, 1, 8) {
int cnt = 0;
for (auto it : x[y]) {
cout << "{{" << y << "," << cnt * 2 << "},";
cout << "" << it << "},";
cnt++;
}
}
cout << "};";
}
// map<PII, int>m = {
// 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// };
void solve_umekomi() {
map<PII, int> m;
int n, k;
cin >> n >> k;
if (k % 2 == 1)
cout << 0 << endl;
else {
cout << m[PII(n, k)] << endl;
}
}
template <std::uint_least32_t MODULO> class modint {
public:
using uint32 = std::uint_least32_t;
using uint64 = std::uint_least64_t;
using iint64 = std::int_fast64_t;
class optimize_tag_t {};
static constexpr optimize_tag_t optimize_tag{};
public:
using value_type = uint32;
value_type a;
static constexpr value_type cst(iint64 x) noexcept {
x %= static_cast<iint64>(MODULO);
if (x < static_cast<iint64>(0)) {
x += static_cast<iint64>(MODULO);
}
return static_cast<value_type>(x);
}
constexpr modint(optimize_tag_t, const value_type &x) noexcept : a(x) {}
constexpr modint() noexcept : a(static_cast<value_type>(0)) {}
constexpr modint(const iint64 &x) noexcept : a(cst(x)) {}
constexpr modint operator+(const modint &o) const noexcept {
return modint(optimize_tag, a + o.a < MODULO ? a + o.a : a + o.a - MODULO);
}
constexpr modint operator-(const modint &o) const noexcept {
return modint(optimize_tag, a < o.a ? a + MODULO - o.a : a - o.a);
}
constexpr modint operator*(const modint &o) const noexcept {
return modint(optimize_tag,
static_cast<value_type>(static_cast<uint64>(a) *
static_cast<uint64>(o.a) %
static_cast<uint64>(MODULO)));
}
constexpr modint operator/(const modint &o) const {
return modint(optimize_tag,
static_cast<value_type>(static_cast<uint64>(a) *
static_cast<uint64>((~o).a) %
static_cast<uint64>(MODULO)));
}
modint &operator+=(const modint &o) noexcept {
if ((a += o.a) >= MODULO)
a -= MODULO;
return *this;
}
modint &operator-=(const modint &o) noexcept {
if (a < o.a)
a += MODULO;
a -= o.a;
return *this;
}
modint &operator*=(const modint &o) noexcept {
a = static_cast<value_type>(static_cast<uint64>(a) *
static_cast<uint64>(o.a) %
static_cast<uint64>(MODULO));
return *this;
}
modint &operator/=(const modint &o) {
a = static_cast<uint64>(a) * (~o).a % MODULO;
return *this;
}
constexpr modint inverse() const noexcept {
assert(a != static_cast<value_type>(0) && "0 does not have inverse");
return pow(static_cast<uint64>(MODULO - static_cast<value_type>(2)));
}
constexpr modint operator~() const noexcept { return inverse(); }
constexpr modint operator-() const noexcept {
if (a == static_cast<value_type>(0)) {
return modint(optimize_tag, static_cast<value_type>(0));
} else {
return modint(optimize_tag, MODULO - a);
}
}
modint &operator++() noexcept {
if (++a == MODULO) {
a = static_cast<value_type>(0);
}
return *this;
}
modint &operator--() noexcept {
if (a == static_cast<value_type>(0)) {
a = MODULO;
}
--a;
return *this;
}
constexpr bool operator==(const modint &o) const noexcept { return a == o.a; }
constexpr bool operator!=(const modint &o) const noexcept { return a != o.a; }
constexpr bool operator<(const modint &o) const noexcept { return a < o.a; }
constexpr bool operator<=(const modint &o) const noexcept { return a <= o.a; }
constexpr bool operator>(const modint &o) const noexcept { return a > o.a; }
constexpr bool operator>=(const modint &o) const noexcept { return a >= o.a; }
constexpr explicit operator bool() const noexcept { return a; }
constexpr explicit operator value_type() const noexcept { return a; }
modint pow(iint64 inx) const noexcept {
if (inx < 0)
assert(a != static_cast<value_type>(0) && "not pow index < 0");
uint64 x = inx;
uint64 t = a, u = 1;
while (x) {
if (x & 1)
u = u * t % MODULO;
t = (t * t) % MODULO;
x >>= 1;
}
return modint(optimize_tag, static_cast<value_type>(u));
}
constexpr value_type get() const noexcept { return a; }
};
using mint = modint<MOD>;
mint dp[51][51][3503];
void solve_dp() {
LL N, score;
cin >> N >> score;
dp[0][0][0] = 1;
// (i,j left, score sum)
FOR(i, 0, N) {
FOR(j, 0, i + 1) {
FOR(k, 0, score + 1) {
{ // o---o
int nj = j;
dp[i + 1][nj][k + 2 * nj] += dp[i][j][k];
}
{ // o...o
int nj = j + 1;
dp[i + 1][nj][k + 2 * nj] += dp[i][j][k];
}
{ // o/...o
int nj = j;
dp[i + 1][nj][k + 2 * nj] += dp[i][j][k] * (2 * j);
}
if (j) { // o/..\o
int nj = j - 1;
dp[i + 1][nj][k + 2 * nj] += dp[i][j][k] * (j * j);
}
}
}
}
mint ans = dp[N][0][score];
cout << ans.get() << "\n";
}
int main() {
cin.tie(0);
ios_base::sync_with_stdio(false);
// maintest();
// cap();
// return 0;
// solve_umekomi();
solve_dp();
return 0;
}
| replace | 211 | 212 | 211 | 212 | 0 | |
p02974 | C++ | Runtime Error | #include <bits/stdc++.h>
using namespace std;
typedef long long ll;
#define rep(i, n) for (ll i = 0; i < ((ll)(n)); i++)
#define reg(i, a, b) for (ll i = ((ll)(a)); i <= ((ll)(b)); i++)
#define irep(i, n) for (ll i = ((ll)(n)-1); i >= 0; i--)
#define ireg(i, a, b) for (ll i = ((ll)(b)); i >= ((ll)(a)); i--)
/*
またぐときにコストが発生すると考える。
dp(i,j) = i個保留、コストがjとなる場合の数
*/
template <int MOD> struct ModInt {
static const int Mod = MOD;
unsigned x;
ModInt() : x(0) {}
ModInt(signed sig) {
int sigt = sig % MOD;
if (sigt < 0)
sigt += MOD;
x = sigt;
}
ModInt(signed long long sig) {
int sigt = sig % MOD;
if (sigt < 0)
sigt += MOD;
x = sigt;
}
int get() const { return (int)x; }
ModInt &operator+=(ModInt that) {
if ((x += that.x) >= MOD)
x -= MOD;
return *this;
}
ModInt &operator-=(ModInt that) {
if ((x += MOD - that.x) >= MOD)
x -= MOD;
return *this;
}
ModInt &operator*=(ModInt that) {
x = (unsigned long long)x * that.x % MOD;
return *this;
}
ModInt &operator/=(ModInt that) { return *this *= that.inverse(); }
ModInt operator+(ModInt that) const { return ModInt(*this) += that; }
ModInt operator-(ModInt that) const { return ModInt(*this) -= that; }
ModInt operator*(ModInt that) const { return ModInt(*this) *= that; }
ModInt operator/(ModInt that) const { return ModInt(*this) /= that; }
ModInt inverse() const {
signed a = x, b = MOD, u = 1, v = 0;
while (b) {
signed t = a / b;
a -= t * b;
std::swap(a, b);
u -= t * v;
std::swap(u, v);
}
if (u < 0)
u += Mod;
ModInt res;
res.x = (unsigned)u;
return res;
}
};
typedef ModInt<1000000007> mint;
ll n, m;
mint dp[51][5001], dp2[51][5001];
void init() {
cin >> n >> m;
dp[0][0] = 1;
}
int main(void) {
init();
rep(i, n) {
rep(j, n) {
rep(k, n * n + 1) {
dp2[j][k + j * 2] += dp[j][k] * 2 * j; // どのjとくっつくかで 2j 通り
dp2[j - 1][k + j * 2] +=
dp[j][k] * j * j; // 左右それぞれどのjを受け取るかで j^2 通り
dp2[j][k + j * 2] += dp[j][k]; // ----
dp2[j + 1][k + j * 2] += dp[j][k]; // 出す
}
}
// cerr<<i<<endl;
rep(j, n) {
rep(k, n * n + 1) {
dp[j][k] = dp2[j][k];
dp2[j][k] = 0;
// cerr<<dp[j][k].get()<<" ";
}
// cerr<<endl;
}
}
cout << dp[0][m].get() << endl;
return 0;
} | #include <bits/stdc++.h>
using namespace std;
typedef long long ll;
#define rep(i, n) for (ll i = 0; i < ((ll)(n)); i++)
#define reg(i, a, b) for (ll i = ((ll)(a)); i <= ((ll)(b)); i++)
#define irep(i, n) for (ll i = ((ll)(n)-1); i >= 0; i--)
#define ireg(i, a, b) for (ll i = ((ll)(b)); i >= ((ll)(a)); i--)
/*
またぐときにコストが発生すると考える。
dp(i,j) = i個保留、コストがjとなる場合の数
*/
template <int MOD> struct ModInt {
static const int Mod = MOD;
unsigned x;
ModInt() : x(0) {}
ModInt(signed sig) {
int sigt = sig % MOD;
if (sigt < 0)
sigt += MOD;
x = sigt;
}
ModInt(signed long long sig) {
int sigt = sig % MOD;
if (sigt < 0)
sigt += MOD;
x = sigt;
}
int get() const { return (int)x; }
ModInt &operator+=(ModInt that) {
if ((x += that.x) >= MOD)
x -= MOD;
return *this;
}
ModInt &operator-=(ModInt that) {
if ((x += MOD - that.x) >= MOD)
x -= MOD;
return *this;
}
ModInt &operator*=(ModInt that) {
x = (unsigned long long)x * that.x % MOD;
return *this;
}
ModInt &operator/=(ModInt that) { return *this *= that.inverse(); }
ModInt operator+(ModInt that) const { return ModInt(*this) += that; }
ModInt operator-(ModInt that) const { return ModInt(*this) -= that; }
ModInt operator*(ModInt that) const { return ModInt(*this) *= that; }
ModInt operator/(ModInt that) const { return ModInt(*this) /= that; }
ModInt inverse() const {
signed a = x, b = MOD, u = 1, v = 0;
while (b) {
signed t = a / b;
a -= t * b;
std::swap(a, b);
u -= t * v;
std::swap(u, v);
}
if (u < 0)
u += Mod;
ModInt res;
res.x = (unsigned)u;
return res;
}
};
typedef ModInt<1000000007> mint;
ll n, m;
mint dp[51][5001], dp2[51][5001];
void init() {
cin >> n >> m;
dp[0][0] = 1;
}
int main(void) {
init();
rep(i, n) {
rep(j, n) {
rep(k, n * n + 1) {
dp2[j][k + j * 2] += dp[j][k] * 2 * j; // どのjとくっつくかで 2j 通り
if (j - 1 >= 0)
dp2[j - 1][k + j * 2] +=
dp[j][k] * j * j; // 左右それぞれどのjを受け取るかで j^2 通り
dp2[j][k + j * 2] += dp[j][k]; // ----
dp2[j + 1][k + j * 2] += dp[j][k]; // 出す
}
}
// cerr<<i<<endl;
rep(j, n) {
rep(k, n * n + 1) {
dp[j][k] = dp2[j][k];
dp2[j][k] = 0;
// cerr<<dp[j][k].get()<<" ";
}
// cerr<<endl;
}
}
cout << dp[0][m].get() << endl;
return 0;
} | replace | 84 | 86 | 84 | 87 | 0 | |
p02974 | C++ | Runtime Error | #pragma GCC optimize("O3")
#include <algorithm>
#include <iostream>
#include <list>
#include <map>
#include <math.h>
#include <numeric>
#include <queue>
#include <set>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unordered_map>
#include <unordered_set>
using namespace std;
using QWORD = uint64_t;
using SQWORD = int64_t;
using DWORD = uint32_t;
using SDWORD = int32_t;
using WORD = uint16_t;
using SWORD = int16_t;
using BYTE = uint8_t;
using SBYTE = int8_t;
using DOUBLE = double;
using FLOAT = float;
#define MIN_SDWORD (-2147483648)
#define MAX_SDWORD (2147483647)
#define MIN_SBYTE (-128)
#define MAX_SBYTE (127)
#define MIN_SQWORD (0x8000000000000000)
#define MAX_SQWORD (0x7FFFFFFFFFFFFFFF)
#define MAX_QWORD (0xFFFFFFFFFFFFFFFF)
#define MAX_DWORD (0xFFFFFFFF)
#define MAX_WORD (0xFFFF)
#define MAX_BYTE (0xFF)
#define MAX_DOUBLE (1.0e+308)
#define DOUBLE_EPS (1.0e-12)
#define MIN_DOUBLE_N (-1.0e+308)
#define ArrayLength(a) (sizeof(a) / sizeof(a[0]))
static inline DOUBLE MAX(DOUBLE a, DOUBLE b) { return a > b ? a : b; }
static inline QWORD MAX(QWORD a, QWORD b) { return a > b ? a : b; }
static inline DWORD MAX(DWORD a, DWORD b) { return a > b ? a : b; }
static inline SDWORD MAX(SDWORD a, SDWORD b) { return a > b ? a : b; }
static inline DOUBLE MIN(DOUBLE a, DOUBLE b) { return a < b ? a : b; }
static inline QWORD MIN(QWORD a, QWORD b) { return a < b ? a : b; }
static inline DWORD MIN(DWORD a, DWORD b) { return a < b ? a : b; }
static inline SDWORD MIN(SDWORD a, SDWORD b) { return a < b ? a : b; }
#define BYTE_BITS (8)
#define WORD_BITS (16)
#define DWORD_BITS (32)
#define QWORD_BITS (64)
static inline void inputStringSpSeparated(char *pcStr) {
char *pcCur = pcStr;
for (;;) {
char c = getchar();
if (('\n' == c) || (EOF == c) || (' ' == c)) {
break;
}
*pcCur = c;
pcCur++;
}
*pcCur = '\0';
}
static inline void inputString(char *pcStr) {
char *pcCur = pcStr;
for (;;) {
char c = getchar();
if (('\n' == c) || (EOF == c)) {
break;
}
*pcCur = c;
pcCur++;
}
*pcCur = '\0';
}
static inline SQWORD inputSQWORD(void) {
SQWORD sqNumber = 0;
SQWORD sqMultiplier = 1;
bool bRead = false;
for (;;) {
char c = getchar();
if (!bRead) {
if ('-' == c) {
sqMultiplier = -1;
}
}
if (('0' <= c) && (c <= '9')) {
sqNumber *= 10LL;
sqNumber += (SQWORD)(c - '0');
bRead = true;
} else {
if (bRead) {
return sqNumber * sqMultiplier;
}
}
}
}
static inline SDWORD inputSDWORD(void) {
SDWORD lNumber = 0;
SDWORD lMultiplier = 1;
bool bRead = false;
for (;;) {
char c = getchar();
if (!bRead) {
if ('-' == c) {
lMultiplier = -1;
}
}
if (('0' <= c) && (c <= '9')) {
lNumber *= 10;
lNumber += (c - '0');
bRead = true;
} else {
if (bRead) {
return lNumber * lMultiplier;
}
}
}
}
static inline DOUBLE inputFP(void) {
DOUBLE dInt = 0.0;
DOUBLE dFrac = 0.0;
DOUBLE dMultiplier = 1.0;
DWORD dwFpCnt = 0;
DOUBLE *pdCur = &dInt;
bool bRead = false;
for (;;) {
char c = getchar();
if (!bRead) {
if ('-' == c) {
dMultiplier = -1;
}
}
if ('.' == c) {
pdCur = &dFrac;
} else if (('0' <= c) && (c <= '9')) {
(*pdCur) *= 10;
(*pdCur) += (DOUBLE)(c - '0');
bRead = true;
if (pdCur == &dFrac) {
dwFpCnt++;
}
} else {
if (bRead) {
return dMultiplier *
(dInt + dFrac / (pow((DOUBLE)10.0, (DOUBLE)dwFpCnt)));
}
}
}
}
/**
* mod による操作ライブラリ
*/
#define ANS_MOD (1000000007LL)
static SQWORD addMod(SQWORD x, SQWORD y) { return (x + y) % ANS_MOD; }
static SQWORD subMod(SQWORD x, SQWORD y) { return (x - y + ANS_MOD) % ANS_MOD; }
static SQWORD mulMod(SQWORD x, SQWORD y) { return (x * y) % ANS_MOD; }
static SQWORD powMod(SQWORD x, SQWORD e) {
SQWORD v = 1;
for (; e; x = mulMod(x, x), e >>= 1) {
if (e & 1) {
v = mulMod(v, x);
}
}
return v;
}
static SQWORD divMod(SQWORD x, SQWORD y) {
return mulMod(x, powMod(y, ANS_MOD - 2));
}
static SQWORD combMod(SQWORD n, SQWORD k) {
SQWORD v = 1;
for (SQWORD i = 1; i <= k; i++) {
v = divMod(mulMod(v, n - i + 1), i);
}
return v;
}
/*----------------------------------------------*/
#define ARYSIZE_N (50 + 1)
#define ARYSIZE_ODDNESS (ARYSIZE_N * ARYSIZE_N + ARYSIZE_N * 2)
#define MAX_ODDNESS (50 * 50)
int main(void) {
SQWORD sqInput_n = inputSQWORD();
SQWORD sqInput_k = inputSQWORD();
/*
* dp[i][j][k]
* 上からi段目、
* 保留(未接続線) がj本
* 奇妙さがk
*/
static SQWORD s_aaasqDp[ARYSIZE_N][ARYSIZE_N][ARYSIZE_ODDNESS];
s_aaasqDp[0][0][0] = 1;
for (SQWORD sqIdxNum = 1; sqIdxNum <= sqInput_n; sqIdxNum++) {
for (SQWORD sqUnCon = 0; sqUnCon <= sqIdxNum; sqUnCon++) {
for (SQWORD sqOddness = 0; sqOddness <= MAX_ODDNESS; sqOddness++) {
/* 〇 --- 〇 */
{
SQWORD sqNextUnCon = sqUnCon;
SQWORD *psqDpTbl =
&(s_aaasqDp[sqIdxNum][sqNextUnCon][sqOddness + sqUnCon * 2]);
*psqDpTbl =
addMod(*psqDpTbl, s_aaasqDp[sqIdxNum - 1][sqUnCon][sqOddness]);
}
/* 〇・ ・〇 */
{
SQWORD sqNextUnCon = sqUnCon + 1;
SQWORD *psqDpTbl =
&(s_aaasqDp[sqIdxNum][sqNextUnCon][sqOddness + sqUnCon * 2]);
*psqDpTbl =
addMod(*psqDpTbl, s_aaasqDp[sqIdxNum - 1][sqUnCon][sqOddness]);
}
/* 〇↑ ・〇 、 〇・ ↑〇 */
{
SQWORD sqNextUnCon = sqUnCon;
SQWORD *psqDpTbl =
&(s_aaasqDp[sqIdxNum][sqNextUnCon][sqOddness + sqUnCon * 2]);
SQWORD sqMul = sqUnCon * 2;
*psqDpTbl = addMod(
*psqDpTbl,
mulMod(s_aaasqDp[sqIdxNum - 1][sqUnCon][sqOddness], sqMul));
}
/* 〇↑ ↑〇 */
if (1 <= sqUnCon) {
SQWORD sqNextUnCon = sqUnCon - 1;
SQWORD *psqDpTbl =
&(s_aaasqDp[sqIdxNum][sqNextUnCon][sqOddness + sqUnCon * 2]);
SQWORD sqMul = mulMod(sqUnCon, sqUnCon);
*psqDpTbl = addMod(
*psqDpTbl,
mulMod(s_aaasqDp[sqIdxNum - 1][sqUnCon][sqOddness], sqMul));
}
}
}
}
SQWORD sqAns = s_aaasqDp[sqInput_n][0][sqInput_k];
printf("%lld\n", sqAns);
return 0;
} | #pragma GCC optimize("O3")
#include <algorithm>
#include <iostream>
#include <list>
#include <map>
#include <math.h>
#include <numeric>
#include <queue>
#include <set>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unordered_map>
#include <unordered_set>
using namespace std;
using QWORD = uint64_t;
using SQWORD = int64_t;
using DWORD = uint32_t;
using SDWORD = int32_t;
using WORD = uint16_t;
using SWORD = int16_t;
using BYTE = uint8_t;
using SBYTE = int8_t;
using DOUBLE = double;
using FLOAT = float;
#define MIN_SDWORD (-2147483648)
#define MAX_SDWORD (2147483647)
#define MIN_SBYTE (-128)
#define MAX_SBYTE (127)
#define MIN_SQWORD (0x8000000000000000)
#define MAX_SQWORD (0x7FFFFFFFFFFFFFFF)
#define MAX_QWORD (0xFFFFFFFFFFFFFFFF)
#define MAX_DWORD (0xFFFFFFFF)
#define MAX_WORD (0xFFFF)
#define MAX_BYTE (0xFF)
#define MAX_DOUBLE (1.0e+308)
#define DOUBLE_EPS (1.0e-12)
#define MIN_DOUBLE_N (-1.0e+308)
#define ArrayLength(a) (sizeof(a) / sizeof(a[0]))
static inline DOUBLE MAX(DOUBLE a, DOUBLE b) { return a > b ? a : b; }
static inline QWORD MAX(QWORD a, QWORD b) { return a > b ? a : b; }
static inline DWORD MAX(DWORD a, DWORD b) { return a > b ? a : b; }
static inline SDWORD MAX(SDWORD a, SDWORD b) { return a > b ? a : b; }
static inline DOUBLE MIN(DOUBLE a, DOUBLE b) { return a < b ? a : b; }
static inline QWORD MIN(QWORD a, QWORD b) { return a < b ? a : b; }
static inline DWORD MIN(DWORD a, DWORD b) { return a < b ? a : b; }
static inline SDWORD MIN(SDWORD a, SDWORD b) { return a < b ? a : b; }
#define BYTE_BITS (8)
#define WORD_BITS (16)
#define DWORD_BITS (32)
#define QWORD_BITS (64)
static inline void inputStringSpSeparated(char *pcStr) {
char *pcCur = pcStr;
for (;;) {
char c = getchar();
if (('\n' == c) || (EOF == c) || (' ' == c)) {
break;
}
*pcCur = c;
pcCur++;
}
*pcCur = '\0';
}
static inline void inputString(char *pcStr) {
char *pcCur = pcStr;
for (;;) {
char c = getchar();
if (('\n' == c) || (EOF == c)) {
break;
}
*pcCur = c;
pcCur++;
}
*pcCur = '\0';
}
static inline SQWORD inputSQWORD(void) {
SQWORD sqNumber = 0;
SQWORD sqMultiplier = 1;
bool bRead = false;
for (;;) {
char c = getchar();
if (!bRead) {
if ('-' == c) {
sqMultiplier = -1;
}
}
if (('0' <= c) && (c <= '9')) {
sqNumber *= 10LL;
sqNumber += (SQWORD)(c - '0');
bRead = true;
} else {
if (bRead) {
return sqNumber * sqMultiplier;
}
}
}
}
static inline SDWORD inputSDWORD(void) {
SDWORD lNumber = 0;
SDWORD lMultiplier = 1;
bool bRead = false;
for (;;) {
char c = getchar();
if (!bRead) {
if ('-' == c) {
lMultiplier = -1;
}
}
if (('0' <= c) && (c <= '9')) {
lNumber *= 10;
lNumber += (c - '0');
bRead = true;
} else {
if (bRead) {
return lNumber * lMultiplier;
}
}
}
}
static inline DOUBLE inputFP(void) {
DOUBLE dInt = 0.0;
DOUBLE dFrac = 0.0;
DOUBLE dMultiplier = 1.0;
DWORD dwFpCnt = 0;
DOUBLE *pdCur = &dInt;
bool bRead = false;
for (;;) {
char c = getchar();
if (!bRead) {
if ('-' == c) {
dMultiplier = -1;
}
}
if ('.' == c) {
pdCur = &dFrac;
} else if (('0' <= c) && (c <= '9')) {
(*pdCur) *= 10;
(*pdCur) += (DOUBLE)(c - '0');
bRead = true;
if (pdCur == &dFrac) {
dwFpCnt++;
}
} else {
if (bRead) {
return dMultiplier *
(dInt + dFrac / (pow((DOUBLE)10.0, (DOUBLE)dwFpCnt)));
}
}
}
}
/**
* mod による操作ライブラリ
*/
#define ANS_MOD (1000000007LL)
static SQWORD addMod(SQWORD x, SQWORD y) { return (x + y) % ANS_MOD; }
static SQWORD subMod(SQWORD x, SQWORD y) { return (x - y + ANS_MOD) % ANS_MOD; }
static SQWORD mulMod(SQWORD x, SQWORD y) { return (x * y) % ANS_MOD; }
static SQWORD powMod(SQWORD x, SQWORD e) {
SQWORD v = 1;
for (; e; x = mulMod(x, x), e >>= 1) {
if (e & 1) {
v = mulMod(v, x);
}
}
return v;
}
static SQWORD divMod(SQWORD x, SQWORD y) {
return mulMod(x, powMod(y, ANS_MOD - 2));
}
static SQWORD combMod(SQWORD n, SQWORD k) {
SQWORD v = 1;
for (SQWORD i = 1; i <= k; i++) {
v = divMod(mulMod(v, n - i + 1), i);
}
return v;
}
/*----------------------------------------------*/
#define ARYSIZE_N (50 + 2)
#define ARYSIZE_ODDNESS (ARYSIZE_N * ARYSIZE_N + ARYSIZE_N * 2)
#define MAX_ODDNESS (50 * 50)
int main(void) {
SQWORD sqInput_n = inputSQWORD();
SQWORD sqInput_k = inputSQWORD();
/*
* dp[i][j][k]
* 上からi段目、
* 保留(未接続線) がj本
* 奇妙さがk
*/
static SQWORD s_aaasqDp[ARYSIZE_N][ARYSIZE_N][ARYSIZE_ODDNESS];
s_aaasqDp[0][0][0] = 1;
for (SQWORD sqIdxNum = 1; sqIdxNum <= sqInput_n; sqIdxNum++) {
for (SQWORD sqUnCon = 0; sqUnCon <= sqIdxNum; sqUnCon++) {
for (SQWORD sqOddness = 0; sqOddness <= MAX_ODDNESS; sqOddness++) {
/* 〇 --- 〇 */
{
SQWORD sqNextUnCon = sqUnCon;
SQWORD *psqDpTbl =
&(s_aaasqDp[sqIdxNum][sqNextUnCon][sqOddness + sqUnCon * 2]);
*psqDpTbl =
addMod(*psqDpTbl, s_aaasqDp[sqIdxNum - 1][sqUnCon][sqOddness]);
}
/* 〇・ ・〇 */
{
SQWORD sqNextUnCon = sqUnCon + 1;
SQWORD *psqDpTbl =
&(s_aaasqDp[sqIdxNum][sqNextUnCon][sqOddness + sqUnCon * 2]);
*psqDpTbl =
addMod(*psqDpTbl, s_aaasqDp[sqIdxNum - 1][sqUnCon][sqOddness]);
}
/* 〇↑ ・〇 、 〇・ ↑〇 */
{
SQWORD sqNextUnCon = sqUnCon;
SQWORD *psqDpTbl =
&(s_aaasqDp[sqIdxNum][sqNextUnCon][sqOddness + sqUnCon * 2]);
SQWORD sqMul = sqUnCon * 2;
*psqDpTbl = addMod(
*psqDpTbl,
mulMod(s_aaasqDp[sqIdxNum - 1][sqUnCon][sqOddness], sqMul));
}
/* 〇↑ ↑〇 */
if (1 <= sqUnCon) {
SQWORD sqNextUnCon = sqUnCon - 1;
SQWORD *psqDpTbl =
&(s_aaasqDp[sqIdxNum][sqNextUnCon][sqOddness + sqUnCon * 2]);
SQWORD sqMul = mulMod(sqUnCon, sqUnCon);
*psqDpTbl = addMod(
*psqDpTbl,
mulMod(s_aaasqDp[sqIdxNum - 1][sqUnCon][sqOddness], sqMul));
}
}
}
}
SQWORD sqAns = s_aaasqDp[sqInput_n][0][sqInput_k];
printf("%lld\n", sqAns);
return 0;
} | replace | 201 | 202 | 201 | 202 | 0 | |
p02974 | C++ | Runtime Error | #include <bits/stdc++.h>
#define owo(i, a, b) for (int i = (a); i < (b); ++i)
#define uwu(i, a, b) for (int i = (a)-1; i >= (b); --i)
#define senpai push_back
#define ttgl pair<int, int>
#define ayaya cout << "ayaya~" << endl
using namespace std;
/*#include <ext/pb_ds/assoc_container.hpp>
using namespace __gnu_pbds;
gp_hash_table<int, int> mp;*/
using ll = long long;
using ld = long double;
const ll MOD = 1000000007;
const ll root = 62;
int gcd(int a, int b) { return b ? gcd(b, a % b) : a; }
ll binpow(ll a, ll b) {
ll res = 1;
while (b) {
if (b & 1)
res = (res * a) % MOD;
a = (a * a) % MOD;
b >>= 1;
}
return res;
}
ll modInv(ll a) { return binpow(a, MOD - 2); }
const double PI = acos(-1);
const double eps = -1e6;
const int INF = 0x3f3f3f3f;
const int NINF = 0xc0c0c0c0;
const ll INFLL = 0x3f3f3f3f3f3f3f3f;
const ll NINFLL = 0xc0c0c0c0c0c0c0c0;
const int mxN = 51;
ll dp[mxN][mxN][mxN * mxN + 101];
int n, m;
int main() {
// freopen("file.in", "r", stdin);
// freopen("file.out", "w", stdout);
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
cin.tie(0)->sync_with_stdio(0);
cin >> n >> m;
dp[0][0][0] = 1;
owo(i, 0, n + 1) {
owo(j, 0, i + 1) {
owo(k, 0, m + 1) {
// pair the next ones
dp[i + 1][j][k + 2 * j] = (dp[i + 1][j][k + 2 * j] + dp[i][j][k]) % MOD;
// pair one of them backwards and one fowards
dp[i + 1][j][k + 2 * j] =
(dp[i + 1][j][k + 2 * j] + 2 * j * dp[i][j][k]) % MOD;
// pair them both backwards
if (j > 0) {
dp[i + 1][j - 1][k + 2 * j] =
(dp[i + 1][j - 1][k + 2 * j] + j * j * dp[i][j][k]) % MOD;
}
// pair them both fowards
dp[i + 1][j + 1][k + 2 * j] =
(dp[i + 1][j + 1][k + 2 * j] + dp[i][j][k]) % MOD;
// cout<<i<<" "<<j<<" "<<k<<" "<<dp[i][j][k]<<"\n";
}
}
}
cout << dp[n][0][m] << "\n";
return 0;
}
| #include <bits/stdc++.h>
#define owo(i, a, b) for (int i = (a); i < (b); ++i)
#define uwu(i, a, b) for (int i = (a)-1; i >= (b); --i)
#define senpai push_back
#define ttgl pair<int, int>
#define ayaya cout << "ayaya~" << endl
using namespace std;
/*#include <ext/pb_ds/assoc_container.hpp>
using namespace __gnu_pbds;
gp_hash_table<int, int> mp;*/
using ll = long long;
using ld = long double;
const ll MOD = 1000000007;
const ll root = 62;
int gcd(int a, int b) { return b ? gcd(b, a % b) : a; }
ll binpow(ll a, ll b) {
ll res = 1;
while (b) {
if (b & 1)
res = (res * a) % MOD;
a = (a * a) % MOD;
b >>= 1;
}
return res;
}
ll modInv(ll a) { return binpow(a, MOD - 2); }
const double PI = acos(-1);
const double eps = -1e6;
const int INF = 0x3f3f3f3f;
const int NINF = 0xc0c0c0c0;
const ll INFLL = 0x3f3f3f3f3f3f3f3f;
const ll NINFLL = 0xc0c0c0c0c0c0c0c0;
const int mxN = 51;
ll dp[mxN][mxN][mxN * mxN + 101];
int n, m;
int main() {
// freopen("file.in", "r", stdin);
// freopen("file.out", "w", stdout);
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
cin.tie(0)->sync_with_stdio(0);
cin >> n >> m;
dp[0][0][0] = 1;
owo(i, 0, n) {
owo(j, 0, i + 1) {
owo(k, 0, m + 1) {
// pair the next ones
dp[i + 1][j][k + 2 * j] = (dp[i + 1][j][k + 2 * j] + dp[i][j][k]) % MOD;
// pair one of them backwards and one fowards
dp[i + 1][j][k + 2 * j] =
(dp[i + 1][j][k + 2 * j] + 2 * j * dp[i][j][k]) % MOD;
// pair them both backwards
if (j > 0) {
dp[i + 1][j - 1][k + 2 * j] =
(dp[i + 1][j - 1][k + 2 * j] + j * j * dp[i][j][k]) % MOD;
}
// pair them both fowards
dp[i + 1][j + 1][k + 2 * j] =
(dp[i + 1][j + 1][k + 2 * j] + dp[i][j][k]) % MOD;
// cout<<i<<" "<<j<<" "<<k<<" "<<dp[i][j][k]<<"\n";
}
}
}
cout << dp[n][0][m] << "\n";
return 0;
}
| replace | 43 | 44 | 43 | 44 | 0 | |
p02974 | C++ | Runtime Error | // #pragma GCC optimize("O3")
// #pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,tune=native")
// #pragma GCC optimize ("unroll-loops")
#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using ld = long double;
const int N = 51;
const int mod = 1e9 + 7;
ll dp[N][N][N * N];
int main() {
ios::sync_with_stdio(false);
cin.tie(nullptr);
cout.tie(nullptr);
int n, k;
cin >> n >> k;
if (k & 1) {
cout << 0;
return 0;
}
k >>= 1;
dp[0][0][0] = 1;
for (int i = 1; i <= n; i++) {
for (int j = 0; j <= i; j++) {
for (int k = 0; k <= n * n / 2; k++) {
(dp[i][j][k + j] += dp[i - 1][j][k]) %= mod;
(dp[i][j + 1][k + j + 1] += dp[i - 1][j][k]) %= mod;
(dp[i][j][k + j] += dp[i - 1][j][k] * 2 * j) %= mod;
if (j >= 1) {
(dp[i][j - 1][k + j - 1] += dp[i - 1][j][k] * j * j) %= mod;
}
}
}
}
cout << dp[n][0][k];
return 0;
} | // #pragma GCC optimize("O3")
// #pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,tune=native")
// #pragma GCC optimize ("unroll-loops")
#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using ld = long double;
const int N = 100;
const int mod = 1e9 + 7;
ll dp[N][N][N * N];
int main() {
ios::sync_with_stdio(false);
cin.tie(nullptr);
cout.tie(nullptr);
int n, k;
cin >> n >> k;
if (k & 1) {
cout << 0;
return 0;
}
k >>= 1;
dp[0][0][0] = 1;
for (int i = 1; i <= n; i++) {
for (int j = 0; j <= i; j++) {
for (int k = 0; k <= n * n / 2; k++) {
(dp[i][j][k + j] += dp[i - 1][j][k]) %= mod;
(dp[i][j + 1][k + j + 1] += dp[i - 1][j][k]) %= mod;
(dp[i][j][k + j] += dp[i - 1][j][k] * 2 * j) %= mod;
if (j >= 1) {
(dp[i][j - 1][k + j - 1] += dp[i - 1][j][k] * j * j) %= mod;
}
}
}
}
cout << dp[n][0][k];
return 0;
} | replace | 10 | 11 | 10 | 11 | 0 | |
p02974 | C++ | Runtime Error | #ifdef stderr_path
#define LOCAL
#endif
#ifdef LOCAL
#define _GLIBCXX_DEBUG
#else
#pragma GCC optimize("Ofast")
#endif
#include <algorithm>
#include <bitset>
#include <cassert>
#include <chrono>
#include <complex>
#include <cstring>
#include <deque>
#include <functional>
#include <iomanip>
#include <iostream>
#include <map>
#include <queue>
#include <random>
#include <set>
#include <stack>
#include <unordered_map>
#include <unordered_set>
// #define NDEBUG
#define debug_stream std::cerr
#define iostream_untie true
#define __precision__ 10
#define all(v) std::begin(v), std::end(v)
#define rall(v) std::rbegin(v), std::rend(v)
#define __odd(n) ((n)&1)
#define __even(n) (not __odd(n))
#define __popcount(n) __builtin_popcountll(n)
#define __clz32(n) __builtin_clz(n)
#define __clz64(n) __builtin_clzll(n)
#define __ctz32(n) __builtin_ctz(n)
#define __ctz64(n) __builtin_ctzll(n)
using i64 = int_fast64_t;
using pii = std::pair<int, int>;
using pll = std::pair<int_fast64_t, int_fast64_t>;
template <class T> using heap = std::priority_queue<T>;
template <class T>
using minheap = std::priority_queue<T, std::vector<T>, std::greater<T>>;
template <class T>
constexpr T inf = std::numeric_limits<T>::max() / T(2) - T(1123456);
namespace execution {
std::chrono::system_clock::time_point start_time, end_time;
void print_elapsed_time() {
end_time = std::chrono::system_clock::now();
std::cerr << "\n----- Exec time : ";
std::cerr << std::chrono::duration_cast<std::chrono::milliseconds>(end_time -
start_time)
.count();
std::cerr << " ms -----\n\n";
}
struct setupper {
setupper() {
if (iostream_untie) {
std::ios::sync_with_stdio(false);
std::cin.tie(nullptr);
}
std::cout << std::fixed << std::setprecision(__precision__);
#ifdef stderr_path
if (freopen(stderr_path, "a", stderr)) {
std::cerr << std::fixed << std::setprecision(__precision__);
}
#endif
#ifdef stdout_path
if (not freopen(stdout_path, "w", stdout)) {
freopen("CON", "w", stdout);
std::cerr << "Failed to open the stdout file\n\n";
}
std::cout << "";
#endif
#ifdef stdin_path
if (not freopen(stdin_path, "r", stdin)) {
freopen("CON", "r", stdin);
std::cerr << "Failed to open the stdin file\n\n";
}
#endif
#ifdef LOCAL
std::cerr << "----- stderr at LOCAL -----\n\n";
atexit(print_elapsed_time);
start_time = std::chrono::system_clock::now();
#else
fclose(stderr);
#endif
}
} __setupper;
} // namespace execution
class myclock_t {
std::chrono::system_clock::time_point built_pt, last_pt;
int built_ln, last_ln;
std::string built_func, last_func;
bool is_built;
public:
explicit myclock_t() : is_built(false) {}
void build(int crt_ln, const std::string &crt_func) {
is_built = true;
last_pt = built_pt = std::chrono::system_clock::now();
last_ln = built_ln = crt_ln, last_func = built_func = crt_func;
}
void set(int crt_ln, const std::string &crt_func) {
if (is_built) {
last_pt = std::chrono::system_clock::now();
last_ln = crt_ln, last_func = crt_func;
} else {
debug_stream << "[ " << crt_ln << " : " << crt_func << " ] "
<< "myclock_t::set failed (yet to be built!)\n";
}
}
void get(int crt_ln, const std::string &crt_func) {
if (is_built) {
std::chrono::system_clock::time_point crt_pt(
std::chrono::system_clock::now());
int64_t diff = std::chrono::duration_cast<std::chrono::milliseconds>(
crt_pt - last_pt)
.count();
debug_stream << diff << " ms elapsed from"
<< " [ " << last_ln << " : " << last_func << " ]";
if (last_ln == built_ln)
debug_stream << " (when built)";
debug_stream << " to"
<< " [ " << crt_ln << " : " << crt_func << " ]"
<< "\n";
last_pt = built_pt, last_ln = built_ln, last_func = built_func;
} else {
debug_stream << "[ " << crt_ln << " : " << crt_func << " ] "
<< "myclock_t::get failed (yet to be built!)\n";
}
}
};
#ifdef LOCAL
myclock_t __myclock;
#define build_clock() __myclock.build(__LINE__, __func__)
#define set_clock() __myclock.set(__LINE__, __func__)
#define get_clock() __myclock.get(__LINE__, __func__)
#else
#define build_clock() ((void)0)
#define set_clock() ((void)0)
#define get_clock() ((void)0)
#endif
namespace std {
template <class RAitr> void rsort(RAitr __first, RAitr __last) {
sort(__first, __last, greater<>());
}
template <class T> size_t hash_combine(size_t seed, T const &key) {
return seed ^ (hash<T>()(key) + 0x9e3779b9 + (seed << 6) + (seed >> 2));
}
template <class T, class U> struct hash<pair<T, U>> {
size_t operator()(pair<T, U> const &pr) const {
return hash_combine(hash_combine(0, pr.first), pr.second);
}
};
template <class tuple_t, size_t index = tuple_size<tuple_t>::value - 1>
struct tuple_hash_calc {
static size_t apply(size_t seed, tuple_t const &t) {
return hash_combine(tuple_hash_calc<tuple_t, index - 1>::apply(seed, t),
get<index>(t));
}
};
template <class tuple_t> struct tuple_hash_calc<tuple_t, 0> {
static size_t apply(size_t seed, tuple_t const &t) {
return hash_combine(seed, get<0>(t));
}
};
template <class... T> struct hash<tuple<T...>> {
size_t operator()(tuple<T...> const &t) const {
return tuple_hash_calc<tuple<T...>>::apply(0, t);
}
};
template <class T, class U>
istream &operator>>(std::istream &s, pair<T, U> &p) {
return s >> p.first >> p.second;
}
template <class T, class U>
ostream &operator<<(std::ostream &s, const pair<T, U> p) {
return s << p.first << " " << p.second;
}
template <class T> istream &operator>>(istream &s, vector<T> &v) {
for (T &e : v) {
s >> e;
}
return s;
}
template <class T> ostream &operator<<(ostream &s, const vector<T> &v) {
bool is_front = true;
for (const T &e : v) {
if (not is_front) {
s << ' ';
} else {
is_front = false;
}
s << e;
}
return s;
}
template <class tuple_t, size_t index> struct tupleos {
static ostream &apply(ostream &s, const tuple_t &t) {
tupleos<tuple_t, index - 1>::apply(s, t);
return s << " " << get<index>(t);
}
};
template <class tuple_t> struct tupleos<tuple_t, 0> {
static ostream &apply(ostream &s, const tuple_t &t) { return s << get<0>(t); }
};
template <class... T> ostream &operator<<(ostream &s, const tuple<T...> &t) {
return tupleos<tuple<T...>, tuple_size<tuple<T...>>::value - 1>::apply(s, t);
}
template <> ostream &operator<<(ostream &s, const tuple<> &t) { return s; }
string revstr(string str) {
reverse(str.begin(), str.end());
return str;
}
} // namespace std
#ifdef LOCAL
#define dump(...) \
debug_stream << "[ " << __LINE__ << " : " << __FUNCTION__ << " ]\n", \
dump_func(#__VA_ARGS__, __VA_ARGS__)
template <class T> void dump_func(const char *ptr, const T &x) {
debug_stream << '\t';
for (char c = *ptr; c != '\0'; c = *++ptr) {
if (c != ' ')
debug_stream << c;
}
debug_stream << " : " << x << '\n';
}
template <class T, class... rest_t>
void dump_func(const char *ptr, const T &x, rest_t... rest) {
debug_stream << '\t';
for (char c = *ptr; c != ','; c = *++ptr) {
if (c != ' ')
debug_stream << c;
}
debug_stream << " : " << x << ",\n";
dump_func(++ptr, rest...);
}
#else
#define dump(...) ((void)0)
#endif
template <class P> void read_range(P __first, P __second) {
for (P i = __first; i != __second; ++i)
std::cin >> *i;
}
template <class P> void write_range(P __first, P __second) {
for (P i = __first; i != __second;
std::cout << (++i == __second ? '\n' : ' ')) {
std::cout << *i;
}
}
// substitute y for x.
template <class T> void subst(T &x, const T &y) { x = y; }
// substitue y for x iff x > y.
template <class T> bool chmin(T &x, const T &y) {
return x > y ? x = y, true : false;
}
// substitue y for x iff x < y.
template <class T> bool chmax(T &x, const T &y) {
return x < y ? x = y, true : false;
}
template <class T> constexpr T minf(const T &x, const T &y) {
return std::min(x, y);
}
template <class T> constexpr T maxf(const T &x, const T &y) {
return std::max(x, y);
}
// binary search.
template <class int_t, class F> int_t bin(int_t ok, int_t ng, const F &f) {
while (std::abs(ok - ng) > 1) {
int_t mid = (ok + ng) / 2;
(f(mid) ? ok : ng) = mid;
}
return ok;
}
// be careful that val is type-sensitive.
template <class T, class A, size_t N> void init(A (&array)[N], const T &val) {
std::fill((T *)array, (T *)(array + N), val);
}
void reset() {}
template <class A, class... rest_t> void reset(A &array, rest_t... rest) {
memset(array, 0, sizeof(array));
reset(rest...);
}
// a integer uniformly and randomly chosen from the interval [l, r).
template <typename int_t> int_t rand_int(int_t l, int_t r) {
static std::random_device seed_gen;
static std::mt19937 engine(seed_gen());
std::uniform_int_distribution<int_t> unid(l, r - 1);
return unid(engine);
}
// a real number uniformly and randomly chosen from the interval [l, r).
template <typename real_t> real_t rand_real(real_t l, real_t r) {
static std::random_device seed_gen;
static std::mt19937 engine(seed_gen());
std::uniform_real_distribution<real_t> unid(l, r);
return unid(engine);
}
/* The main code follows. */
namespace math {
template <int mod> struct modint {
int rep;
constexpr modint() : rep(0) {}
constexpr modint(int_fast64_t y)
: rep(y >= 0 ? y % mod : (mod - (-y) % mod) % mod) {}
constexpr modint &operator+=(const modint &p) {
return (rep += p.rep) < mod ? 0 : rep -= mod, *this;
}
constexpr modint &operator++() { return ++rep, *this; }
constexpr modint operator++(int) {
modint t = *this;
return ++rep, t;
}
constexpr modint &operator-=(const modint &p) {
return (rep += mod - p.rep) < mod ? 0 : rep -= mod, *this;
}
constexpr modint &operator--() { return --rep, *this; }
constexpr modint operator--(int) {
modint t = *this;
return --rep, t;
}
constexpr modint &operator*=(const modint &p) {
return rep = (int_fast64_t)rep * p.rep % mod, *this;
}
constexpr modint &operator/=(const modint &p) { return *this *= inverse(p); }
// constexpr modint &operator%=(int m) { return rep %= m, *this; }
constexpr modint operator-() const { return modint(-rep); }
constexpr modint operator+(const modint &p) const {
return modint(*this) += p;
}
constexpr modint operator-(const modint &p) const {
return modint(*this) -= p;
}
constexpr modint operator*(const modint &p) const {
return modint(*this) *= p;
}
constexpr modint operator/(const modint &p) const {
return modint(*this) /= p;
}
// constexpr modint operator%(int m) const { return modint(*this) %= m;
// }
constexpr bool operator==(const modint &p) const { return rep == p.rep; }
constexpr bool operator!=(const modint &p) const { return rep != p.rep; }
constexpr bool operator!() const { return !rep; }
// constexpr bool operator>(const modint &p) const { return rep > p.rep; }
// constexpr bool operator<(const modint &p) const { return rep < p.rep; }
// constexpr bool operator>=(const modint &p) const { return rep >= p.rep; }
// constexpr bool operator<=(const modint &p) const { return rep <= p.rep; }
constexpr friend modint<mod> inverse(const modint<mod> &p) {
int a = p.rep, b = mod, u = 1, v = 0;
while (b > 0) {
int t = a / b;
a -= t * b;
a ^= b ^= a ^= b;
u -= t * v;
u ^= v ^= u ^= v;
}
return modint(u);
}
constexpr friend modint pow(modint p, int_fast64_t e) {
if (e < 0)
e = (e % (mod - 1) + mod - 1) % (mod - 1);
modint ret = 1;
while (e) {
if (e & 1)
ret *= p;
p *= p;
e >>= 1;
}
return ret;
}
friend std::ostream &operator<<(std::ostream &s, const modint &p) {
return s << p.rep;
}
friend std::istream &operator>>(std::istream &s, modint &p) {
int_fast64_t rep;
p = modint((s >> rep, rep));
return s;
}
};
} // namespace math
using namespace std;
using namespace math;
signed main() {
void __solve();
void __precalc();
unsigned int t = 1;
// cin >> t;
__precalc();
#ifdef LOCAL
t = 1;
#endif
while (t--) {
__solve();
}
}
using mint = modint<1000000007>;
void __precalc() {}
void __solve() {
int n, k;
cin >> n >> k;
mint dp[2][2507][51];
reset(dp);
auto &crt = dp[0];
auto &nxt = dp[1];
dp[0][0][0] = 1;
for (int i = 0; i < n; ++i) {
reset(nxt);
for (int s = 0; s <= n * n; ++s) {
for (int j = 0; j < n; ++j) {
if (not crt[s][j])
continue;
nxt[s + j * 2][j] += crt[s][j] * (j * 2 + 1);
nxt[s + (j + 1) * 2][j + 1] += crt[s][j];
if (j) {
nxt[s + (j - 1) * 2][j - 1] += crt[s][j] * j * j;
}
}
}
swap(crt, nxt);
}
std::cout << crt[k][0] << "\n";
}
| #ifdef stderr_path
#define LOCAL
#endif
#ifdef LOCAL
#define _GLIBCXX_DEBUG
#else
#pragma GCC optimize("Ofast")
#endif
#include <algorithm>
#include <bitset>
#include <cassert>
#include <chrono>
#include <complex>
#include <cstring>
#include <deque>
#include <functional>
#include <iomanip>
#include <iostream>
#include <map>
#include <queue>
#include <random>
#include <set>
#include <stack>
#include <unordered_map>
#include <unordered_set>
// #define NDEBUG
#define debug_stream std::cerr
#define iostream_untie true
#define __precision__ 10
#define all(v) std::begin(v), std::end(v)
#define rall(v) std::rbegin(v), std::rend(v)
#define __odd(n) ((n)&1)
#define __even(n) (not __odd(n))
#define __popcount(n) __builtin_popcountll(n)
#define __clz32(n) __builtin_clz(n)
#define __clz64(n) __builtin_clzll(n)
#define __ctz32(n) __builtin_ctz(n)
#define __ctz64(n) __builtin_ctzll(n)
using i64 = int_fast64_t;
using pii = std::pair<int, int>;
using pll = std::pair<int_fast64_t, int_fast64_t>;
template <class T> using heap = std::priority_queue<T>;
template <class T>
using minheap = std::priority_queue<T, std::vector<T>, std::greater<T>>;
template <class T>
constexpr T inf = std::numeric_limits<T>::max() / T(2) - T(1123456);
namespace execution {
std::chrono::system_clock::time_point start_time, end_time;
void print_elapsed_time() {
end_time = std::chrono::system_clock::now();
std::cerr << "\n----- Exec time : ";
std::cerr << std::chrono::duration_cast<std::chrono::milliseconds>(end_time -
start_time)
.count();
std::cerr << " ms -----\n\n";
}
struct setupper {
setupper() {
if (iostream_untie) {
std::ios::sync_with_stdio(false);
std::cin.tie(nullptr);
}
std::cout << std::fixed << std::setprecision(__precision__);
#ifdef stderr_path
if (freopen(stderr_path, "a", stderr)) {
std::cerr << std::fixed << std::setprecision(__precision__);
}
#endif
#ifdef stdout_path
if (not freopen(stdout_path, "w", stdout)) {
freopen("CON", "w", stdout);
std::cerr << "Failed to open the stdout file\n\n";
}
std::cout << "";
#endif
#ifdef stdin_path
if (not freopen(stdin_path, "r", stdin)) {
freopen("CON", "r", stdin);
std::cerr << "Failed to open the stdin file\n\n";
}
#endif
#ifdef LOCAL
std::cerr << "----- stderr at LOCAL -----\n\n";
atexit(print_elapsed_time);
start_time = std::chrono::system_clock::now();
#else
fclose(stderr);
#endif
}
} __setupper;
} // namespace execution
class myclock_t {
std::chrono::system_clock::time_point built_pt, last_pt;
int built_ln, last_ln;
std::string built_func, last_func;
bool is_built;
public:
explicit myclock_t() : is_built(false) {}
void build(int crt_ln, const std::string &crt_func) {
is_built = true;
last_pt = built_pt = std::chrono::system_clock::now();
last_ln = built_ln = crt_ln, last_func = built_func = crt_func;
}
void set(int crt_ln, const std::string &crt_func) {
if (is_built) {
last_pt = std::chrono::system_clock::now();
last_ln = crt_ln, last_func = crt_func;
} else {
debug_stream << "[ " << crt_ln << " : " << crt_func << " ] "
<< "myclock_t::set failed (yet to be built!)\n";
}
}
void get(int crt_ln, const std::string &crt_func) {
if (is_built) {
std::chrono::system_clock::time_point crt_pt(
std::chrono::system_clock::now());
int64_t diff = std::chrono::duration_cast<std::chrono::milliseconds>(
crt_pt - last_pt)
.count();
debug_stream << diff << " ms elapsed from"
<< " [ " << last_ln << " : " << last_func << " ]";
if (last_ln == built_ln)
debug_stream << " (when built)";
debug_stream << " to"
<< " [ " << crt_ln << " : " << crt_func << " ]"
<< "\n";
last_pt = built_pt, last_ln = built_ln, last_func = built_func;
} else {
debug_stream << "[ " << crt_ln << " : " << crt_func << " ] "
<< "myclock_t::get failed (yet to be built!)\n";
}
}
};
#ifdef LOCAL
myclock_t __myclock;
#define build_clock() __myclock.build(__LINE__, __func__)
#define set_clock() __myclock.set(__LINE__, __func__)
#define get_clock() __myclock.get(__LINE__, __func__)
#else
#define build_clock() ((void)0)
#define set_clock() ((void)0)
#define get_clock() ((void)0)
#endif
namespace std {
template <class RAitr> void rsort(RAitr __first, RAitr __last) {
sort(__first, __last, greater<>());
}
template <class T> size_t hash_combine(size_t seed, T const &key) {
return seed ^ (hash<T>()(key) + 0x9e3779b9 + (seed << 6) + (seed >> 2));
}
template <class T, class U> struct hash<pair<T, U>> {
size_t operator()(pair<T, U> const &pr) const {
return hash_combine(hash_combine(0, pr.first), pr.second);
}
};
template <class tuple_t, size_t index = tuple_size<tuple_t>::value - 1>
struct tuple_hash_calc {
static size_t apply(size_t seed, tuple_t const &t) {
return hash_combine(tuple_hash_calc<tuple_t, index - 1>::apply(seed, t),
get<index>(t));
}
};
template <class tuple_t> struct tuple_hash_calc<tuple_t, 0> {
static size_t apply(size_t seed, tuple_t const &t) {
return hash_combine(seed, get<0>(t));
}
};
template <class... T> struct hash<tuple<T...>> {
size_t operator()(tuple<T...> const &t) const {
return tuple_hash_calc<tuple<T...>>::apply(0, t);
}
};
template <class T, class U>
istream &operator>>(std::istream &s, pair<T, U> &p) {
return s >> p.first >> p.second;
}
template <class T, class U>
ostream &operator<<(std::ostream &s, const pair<T, U> p) {
return s << p.first << " " << p.second;
}
template <class T> istream &operator>>(istream &s, vector<T> &v) {
for (T &e : v) {
s >> e;
}
return s;
}
template <class T> ostream &operator<<(ostream &s, const vector<T> &v) {
bool is_front = true;
for (const T &e : v) {
if (not is_front) {
s << ' ';
} else {
is_front = false;
}
s << e;
}
return s;
}
template <class tuple_t, size_t index> struct tupleos {
static ostream &apply(ostream &s, const tuple_t &t) {
tupleos<tuple_t, index - 1>::apply(s, t);
return s << " " << get<index>(t);
}
};
template <class tuple_t> struct tupleos<tuple_t, 0> {
static ostream &apply(ostream &s, const tuple_t &t) { return s << get<0>(t); }
};
template <class... T> ostream &operator<<(ostream &s, const tuple<T...> &t) {
return tupleos<tuple<T...>, tuple_size<tuple<T...>>::value - 1>::apply(s, t);
}
template <> ostream &operator<<(ostream &s, const tuple<> &t) { return s; }
string revstr(string str) {
reverse(str.begin(), str.end());
return str;
}
} // namespace std
#ifdef LOCAL
#define dump(...) \
debug_stream << "[ " << __LINE__ << " : " << __FUNCTION__ << " ]\n", \
dump_func(#__VA_ARGS__, __VA_ARGS__)
template <class T> void dump_func(const char *ptr, const T &x) {
debug_stream << '\t';
for (char c = *ptr; c != '\0'; c = *++ptr) {
if (c != ' ')
debug_stream << c;
}
debug_stream << " : " << x << '\n';
}
template <class T, class... rest_t>
void dump_func(const char *ptr, const T &x, rest_t... rest) {
debug_stream << '\t';
for (char c = *ptr; c != ','; c = *++ptr) {
if (c != ' ')
debug_stream << c;
}
debug_stream << " : " << x << ",\n";
dump_func(++ptr, rest...);
}
#else
#define dump(...) ((void)0)
#endif
template <class P> void read_range(P __first, P __second) {
for (P i = __first; i != __second; ++i)
std::cin >> *i;
}
template <class P> void write_range(P __first, P __second) {
for (P i = __first; i != __second;
std::cout << (++i == __second ? '\n' : ' ')) {
std::cout << *i;
}
}
// substitute y for x.
template <class T> void subst(T &x, const T &y) { x = y; }
// substitue y for x iff x > y.
template <class T> bool chmin(T &x, const T &y) {
return x > y ? x = y, true : false;
}
// substitue y for x iff x < y.
template <class T> bool chmax(T &x, const T &y) {
return x < y ? x = y, true : false;
}
template <class T> constexpr T minf(const T &x, const T &y) {
return std::min(x, y);
}
template <class T> constexpr T maxf(const T &x, const T &y) {
return std::max(x, y);
}
// binary search.
template <class int_t, class F> int_t bin(int_t ok, int_t ng, const F &f) {
while (std::abs(ok - ng) > 1) {
int_t mid = (ok + ng) / 2;
(f(mid) ? ok : ng) = mid;
}
return ok;
}
// be careful that val is type-sensitive.
template <class T, class A, size_t N> void init(A (&array)[N], const T &val) {
std::fill((T *)array, (T *)(array + N), val);
}
void reset() {}
template <class A, class... rest_t> void reset(A &array, rest_t... rest) {
memset(array, 0, sizeof(array));
reset(rest...);
}
// a integer uniformly and randomly chosen from the interval [l, r).
template <typename int_t> int_t rand_int(int_t l, int_t r) {
static std::random_device seed_gen;
static std::mt19937 engine(seed_gen());
std::uniform_int_distribution<int_t> unid(l, r - 1);
return unid(engine);
}
// a real number uniformly and randomly chosen from the interval [l, r).
template <typename real_t> real_t rand_real(real_t l, real_t r) {
static std::random_device seed_gen;
static std::mt19937 engine(seed_gen());
std::uniform_real_distribution<real_t> unid(l, r);
return unid(engine);
}
/* The main code follows. */
namespace math {
template <int mod> struct modint {
int rep;
constexpr modint() : rep(0) {}
constexpr modint(int_fast64_t y)
: rep(y >= 0 ? y % mod : (mod - (-y) % mod) % mod) {}
constexpr modint &operator+=(const modint &p) {
return (rep += p.rep) < mod ? 0 : rep -= mod, *this;
}
constexpr modint &operator++() { return ++rep, *this; }
constexpr modint operator++(int) {
modint t = *this;
return ++rep, t;
}
constexpr modint &operator-=(const modint &p) {
return (rep += mod - p.rep) < mod ? 0 : rep -= mod, *this;
}
constexpr modint &operator--() { return --rep, *this; }
constexpr modint operator--(int) {
modint t = *this;
return --rep, t;
}
constexpr modint &operator*=(const modint &p) {
return rep = (int_fast64_t)rep * p.rep % mod, *this;
}
constexpr modint &operator/=(const modint &p) { return *this *= inverse(p); }
// constexpr modint &operator%=(int m) { return rep %= m, *this; }
constexpr modint operator-() const { return modint(-rep); }
constexpr modint operator+(const modint &p) const {
return modint(*this) += p;
}
constexpr modint operator-(const modint &p) const {
return modint(*this) -= p;
}
constexpr modint operator*(const modint &p) const {
return modint(*this) *= p;
}
constexpr modint operator/(const modint &p) const {
return modint(*this) /= p;
}
// constexpr modint operator%(int m) const { return modint(*this) %= m;
// }
constexpr bool operator==(const modint &p) const { return rep == p.rep; }
constexpr bool operator!=(const modint &p) const { return rep != p.rep; }
constexpr bool operator!() const { return !rep; }
// constexpr bool operator>(const modint &p) const { return rep > p.rep; }
// constexpr bool operator<(const modint &p) const { return rep < p.rep; }
// constexpr bool operator>=(const modint &p) const { return rep >= p.rep; }
// constexpr bool operator<=(const modint &p) const { return rep <= p.rep; }
constexpr friend modint<mod> inverse(const modint<mod> &p) {
int a = p.rep, b = mod, u = 1, v = 0;
while (b > 0) {
int t = a / b;
a -= t * b;
a ^= b ^= a ^= b;
u -= t * v;
u ^= v ^= u ^= v;
}
return modint(u);
}
constexpr friend modint pow(modint p, int_fast64_t e) {
if (e < 0)
e = (e % (mod - 1) + mod - 1) % (mod - 1);
modint ret = 1;
while (e) {
if (e & 1)
ret *= p;
p *= p;
e >>= 1;
}
return ret;
}
friend std::ostream &operator<<(std::ostream &s, const modint &p) {
return s << p.rep;
}
friend std::istream &operator>>(std::istream &s, modint &p) {
int_fast64_t rep;
p = modint((s >> rep, rep));
return s;
}
};
} // namespace math
using namespace std;
using namespace math;
signed main() {
void __solve();
void __precalc();
unsigned int t = 1;
// cin >> t;
__precalc();
#ifdef LOCAL
t = 1;
#endif
while (t--) {
__solve();
}
}
using mint = modint<1000000007>;
void __precalc() {}
void __solve() {
int n, k;
cin >> n >> k;
mint dp[2][3125][55];
reset(dp);
auto &crt = dp[0];
auto &nxt = dp[1];
dp[0][0][0] = 1;
for (int i = 0; i < n; ++i) {
reset(nxt);
for (int s = 0; s <= n * n; ++s) {
for (int j = 0; j < n; ++j) {
if (not crt[s][j])
continue;
nxt[s + j * 2][j] += crt[s][j] * (j * 2 + 1);
nxt[s + (j + 1) * 2][j + 1] += crt[s][j];
if (j) {
nxt[s + (j - 1) * 2][j - 1] += crt[s][j] * j * j;
}
}
}
swap(crt, nxt);
}
std::cout << crt[k][0] << "\n";
}
| replace | 447 | 448 | 447 | 448 | 0 | |
p02974 | C++ | Runtime Error | #include <bits/stdc++.h>
#define debug(x) cerr << #x << ": " << x << '\n';
using namespace std;
using ll = long long;
using P = pair<int, int>;
const int INF = (int)1e9;
const int MOD = (int)1e9 + 7;
template <int mod> struct ModInt {
int x;
ModInt() : x(0) {}
ModInt(int64_t y) : x(y >= 0 ? y % mod : (mod - (-y) % mod) % mod) {}
ModInt &operator+=(const ModInt &p) {
if ((x += p.x) >= mod)
x -= mod;
return *this;
}
ModInt &operator-=(const ModInt &p) {
if ((x += mod - p.x) >= mod)
x -= mod;
return *this;
}
ModInt &operator*=(const ModInt &p) {
x = (int)(1LL * x * p.x % mod);
return *this;
}
ModInt &operator/=(const ModInt &p) {
*this *= p.inverse();
return *this;
}
ModInt operator-() const { return ModInt(-x); }
ModInt operator+(const ModInt &p) const { return ModInt(*this) += p; }
ModInt operator-(const ModInt &p) const { return ModInt(*this) -= p; }
ModInt operator*(const ModInt &p) const { return ModInt(*this) *= p; }
ModInt operator/(const ModInt &p) const { return ModInt(*this) /= p; }
bool operator==(const ModInt &p) const { return x == p.x; }
bool operator!=(const ModInt &p) const { return x != p.x; }
ModInt inverse() const {
int a = x, b = mod, u = 1, v = 0, t;
while (b > 0) {
t = a / b;
swap(a -= t * b, b);
swap(u -= t * v, v);
}
return ModInt(u);
}
ModInt pow(int64_t n) const {
ModInt ret(1), mul(x);
while (n > 0) {
if (n & 1)
ret *= mul;
mul *= mul;
n >>= 1;
}
return ret;
}
friend ostream &operator<<(ostream &os, const ModInt &p) { return os << p.x; }
friend istream &operator>>(istream &is, ModInt &a) {
int64_t t;
is >> t;
a = ModInt<mod>(t);
return (is);
}
static int get_mod() { return mod; }
};
using mint = ModInt<MOD>;
// dp[i][j][k]: i段目まで、保留j、奇妙さk
mint dp[51][51][2600];
int main(void) {
int N, K;
cin >> N >> K;
dp[0][0][0] = 1;
for (int i = 0; i < N; i++) {
for (int j = 0; j <= i + 1; j++) {
for (int k = 0; k <= K; k++) {
{
int nj = j;
dp[i + 1][nj][k + nj * 2] += dp[i][j][k];
}
{
int nj = j + 1;
dp[i + 1][nj][k + nj * 2] += dp[i][j][k];
}
{
int nj = j;
mint x = j * 2;
dp[i + 1][nj][k + nj * 2] += dp[i][j][k] * x;
}
if (j >= 1) {
int nj = j - 1;
mint x = j * j;
dp[i + 1][nj][k + nj * 2] += dp[i][j][k] * x;
}
}
}
}
cout << dp[N][0][K] << '\n';
return 0;
} | #include <bits/stdc++.h>
#define debug(x) cerr << #x << ": " << x << '\n';
using namespace std;
using ll = long long;
using P = pair<int, int>;
const int INF = (int)1e9;
const int MOD = (int)1e9 + 7;
template <int mod> struct ModInt {
int x;
ModInt() : x(0) {}
ModInt(int64_t y) : x(y >= 0 ? y % mod : (mod - (-y) % mod) % mod) {}
ModInt &operator+=(const ModInt &p) {
if ((x += p.x) >= mod)
x -= mod;
return *this;
}
ModInt &operator-=(const ModInt &p) {
if ((x += mod - p.x) >= mod)
x -= mod;
return *this;
}
ModInt &operator*=(const ModInt &p) {
x = (int)(1LL * x * p.x % mod);
return *this;
}
ModInt &operator/=(const ModInt &p) {
*this *= p.inverse();
return *this;
}
ModInt operator-() const { return ModInt(-x); }
ModInt operator+(const ModInt &p) const { return ModInt(*this) += p; }
ModInt operator-(const ModInt &p) const { return ModInt(*this) -= p; }
ModInt operator*(const ModInt &p) const { return ModInt(*this) *= p; }
ModInt operator/(const ModInt &p) const { return ModInt(*this) /= p; }
bool operator==(const ModInt &p) const { return x == p.x; }
bool operator!=(const ModInt &p) const { return x != p.x; }
ModInt inverse() const {
int a = x, b = mod, u = 1, v = 0, t;
while (b > 0) {
t = a / b;
swap(a -= t * b, b);
swap(u -= t * v, v);
}
return ModInt(u);
}
ModInt pow(int64_t n) const {
ModInt ret(1), mul(x);
while (n > 0) {
if (n & 1)
ret *= mul;
mul *= mul;
n >>= 1;
}
return ret;
}
friend ostream &operator<<(ostream &os, const ModInt &p) { return os << p.x; }
friend istream &operator>>(istream &is, ModInt &a) {
int64_t t;
is >> t;
a = ModInt<mod>(t);
return (is);
}
static int get_mod() { return mod; }
};
using mint = ModInt<MOD>;
// dp[i][j][k]: i段目まで、保留j、奇妙さk
mint dp[51][51][2600];
int main(void) {
int N, K;
cin >> N >> K;
dp[0][0][0] = 1;
for (int i = 0; i < N; i++) {
for (int j = 0; j <= i; j++) {
for (int k = 0; k <= K; k++) {
{
int nj = j;
dp[i + 1][nj][k + nj * 2] += dp[i][j][k];
}
{
int nj = j + 1;
dp[i + 1][nj][k + nj * 2] += dp[i][j][k];
}
{
int nj = j;
mint x = j * 2;
dp[i + 1][nj][k + nj * 2] += dp[i][j][k] * x;
}
if (j >= 1) {
int nj = j - 1;
mint x = j * j;
dp[i + 1][nj][k + nj * 2] += dp[i][j][k] * x;
}
}
}
}
cout << dp[N][0][K] << '\n';
return 0;
} | replace | 85 | 86 | 85 | 86 | 0 | |
p02974 | C++ | Memory Limit Exceeded | #include <algorithm>
#include <assert.h>
#include <bitset>
#include <cmath>
#include <cstdio>
#include <cstring>
#include <functional>
#include <iostream>
#include <map>
#include <numeric>
#include <queue>
#include <random>
#include <set>
#include <sstream>
#include <stack>
#include <string>
#include <typeinfo>
#include <unordered_map>
#include <unordered_set>
#include <vector>
using namespace std;
using ll = long long;
using ull = unsigned long long;
const ll INF = 1e18;
const ll MOD = 1e9 + 7;
#define REP(i, n) for (ll i = 0; i < n; i++)
int main() {
ll n, K;
cin >> n >> K;
vector<vector<vector<ll>>> dp(
n * 3, vector<vector<ll>>(n * 3, vector<ll>(n * n * 3)));
dp[0][0][0] = 1;
REP(i, n) {
REP(j, n) {
REP(k, n * n + 1) {
dp[i + 1][j][k + j * 2] += dp[i][j][k];
dp[i + 1][j][k + j * 2] %= MOD;
dp[i + 1][j + 1][k + (j + 1) * 2] += dp[i][j][k];
dp[i + 1][j + 1][k + (j + 1) * 2] %= MOD;
dp[i + 1][j][k + j * 2] += dp[i][j][k] * 2 * j;
dp[i + 1][j][k + j * 2] %= MOD;
if (j - 1 >= 0) {
dp[i + 1][j - 1][k + (j - 1) * 2] += dp[i][j][k] * j * j;
dp[i + 1][j - 1][k + (j - 1) * 2] %= MOD;
}
}
}
}
cout << dp[n][0][K] << endl;
} | #include <algorithm>
#include <assert.h>
#include <bitset>
#include <cmath>
#include <cstdio>
#include <cstring>
#include <functional>
#include <iostream>
#include <map>
#include <numeric>
#include <queue>
#include <random>
#include <set>
#include <sstream>
#include <stack>
#include <string>
#include <typeinfo>
#include <unordered_map>
#include <unordered_set>
#include <vector>
using namespace std;
using ll = long long;
using ull = unsigned long long;
const ll INF = 1e18;
const ll MOD = 1e9 + 7;
#define REP(i, n) for (ll i = 0; i < n; i++)
int main() {
ll n, K;
cin >> n >> K;
vector<vector<vector<ll>>> dp(55, vector<vector<ll>>(55, vector<ll>(3000)));
dp[0][0][0] = 1;
REP(i, n) {
REP(j, n) {
REP(k, n * n + 1) {
dp[i + 1][j][k + j * 2] += dp[i][j][k];
dp[i + 1][j][k + j * 2] %= MOD;
dp[i + 1][j + 1][k + (j + 1) * 2] += dp[i][j][k];
dp[i + 1][j + 1][k + (j + 1) * 2] %= MOD;
dp[i + 1][j][k + j * 2] += dp[i][j][k] * 2 * j;
dp[i + 1][j][k + j * 2] %= MOD;
if (j - 1 >= 0) {
dp[i + 1][j - 1][k + (j - 1) * 2] += dp[i][j][k] * j * j;
dp[i + 1][j - 1][k + (j - 1) * 2] %= MOD;
}
}
}
}
cout << dp[n][0][K] << endl;
} | replace | 33 | 35 | 33 | 34 | MLE | |
p02974 | C++ | Runtime Error | #include <bits/stdc++.h>
using namespace std;
typedef long long ll;
// #include <boost/multiprecision/cpp_int.hpp>
// typedef boost::multiprecision::cpp_int ll;
typedef long double dd;
#define i_7 (ll)(1E9 + 7)
// #define i_7 998244353
#define i_5 i_7 - 2
ll mod(ll a) {
ll c = a % i_7;
if (c >= 0)
return c;
return c + i_7;
}
typedef pair<ll, ll> l_l;
ll inf = (ll)1E17;
#define rep(i, l, r) for (ll i = l; i <= r; i++)
#define pb push_back
ll max(ll a, ll b) {
if (a < b)
return b;
else
return a;
}
ll min(ll a, ll b) {
if (a > b)
return b;
else
return a;
}
void Max(ll &pos, ll val) { pos = max(pos, val); } // Max(dp[n],dp[n-1]);
void Min(ll &pos, ll val) { pos = min(pos, val); }
void Add(ll &pos, ll val) { pos = mod(pos + val); }
dd EPS = 1E-9;
#define fastio \
ios::sync_with_stdio(false); \
cin.tie(0); \
cout.tie(0);
///////////////////////////////////////
int main() {
ll m, k;
cin >> m >> k;
if (k % 2 == 1) {
cout << 0 << endl;
return 0;
}
ll N = 2 * m;
ll dp[m + 1][N + 1][m + 1];
memset(dp, 0, sizeof(dp));
dp[0][0][0] = 1;
rep(n, 0, m) {
rep(d, 0, N) {
rep(l, 0, m) {
ll ad1 = 0;
rep(li, l, n / 2) {
if (n - 1 >= 0 && d - l >= 0)
Add(ad1, (dp[n - 1][d - l][li]));
}
Add(dp[n][d][l], mod(ad1 * (2 * l + 1)));
ll ad2 = 0;
rep(li, l - 1, n / 2) {
if (n - 2 >= 0 && (d - (2 * l - 1)) >= 0 && li >= 0)
Add(ad2, dp[n - 2][d - (2 * l - 1)][li]);
}
Add(dp[n][d][l], mod(l * l * ad2));
}
}
}
/*rep(i,0,N){
rep(j,0,m){
cout<<dp[m][i][j]<<" ";
}cout<<endl;
}*/
ll ans = 0;
rep(i, 0, m) { Add(ans, dp[m][k / 2][i]); }
cout << ans << endl;
return 0;
}
| #include <bits/stdc++.h>
using namespace std;
typedef long long ll;
// #include <boost/multiprecision/cpp_int.hpp>
// typedef boost::multiprecision::cpp_int ll;
typedef long double dd;
#define i_7 (ll)(1E9 + 7)
// #define i_7 998244353
#define i_5 i_7 - 2
ll mod(ll a) {
ll c = a % i_7;
if (c >= 0)
return c;
return c + i_7;
}
typedef pair<ll, ll> l_l;
ll inf = (ll)1E17;
#define rep(i, l, r) for (ll i = l; i <= r; i++)
#define pb push_back
ll max(ll a, ll b) {
if (a < b)
return b;
else
return a;
}
ll min(ll a, ll b) {
if (a > b)
return b;
else
return a;
}
void Max(ll &pos, ll val) { pos = max(pos, val); } // Max(dp[n],dp[n-1]);
void Min(ll &pos, ll val) { pos = min(pos, val); }
void Add(ll &pos, ll val) { pos = mod(pos + val); }
dd EPS = 1E-9;
#define fastio \
ios::sync_with_stdio(false); \
cin.tie(0); \
cout.tie(0);
///////////////////////////////////////
int main() {
ll m, k;
cin >> m >> k;
if (k % 2 == 1) {
cout << 0 << endl;
return 0;
}
ll N = k / 2;
ll dp[m + 1][N + 1][m + 1];
memset(dp, 0, sizeof(dp));
dp[0][0][0] = 1;
rep(n, 0, m) {
rep(d, 0, N) {
rep(l, 0, m) {
ll ad1 = 0;
rep(li, l, n / 2) {
if (n - 1 >= 0 && d - l >= 0)
Add(ad1, (dp[n - 1][d - l][li]));
}
Add(dp[n][d][l], mod(ad1 * (2 * l + 1)));
ll ad2 = 0;
rep(li, l - 1, n / 2) {
if (n - 2 >= 0 && (d - (2 * l - 1)) >= 0 && li >= 0)
Add(ad2, dp[n - 2][d - (2 * l - 1)][li]);
}
Add(dp[n][d][l], mod(l * l * ad2));
}
}
}
/*rep(i,0,N){
rep(j,0,m){
cout<<dp[m][i][j]<<" ";
}cout<<endl;
}*/
ll ans = 0;
rep(i, 0, m) { Add(ans, dp[m][k / 2][i]); }
cout << ans << endl;
return 0;
}
| replace | 49 | 50 | 49 | 50 | 0 | |
p02974 | C++ | Runtime Error | #include <bits/stdc++.h>
using namespace std;
using int64 = long long;
constexpr int64 P = 1000000007;
// Verified: ABC133E, ABC132D, ABC130E
struct FiniteField {
private:
int64 x;
public:
FiniteField(int64 input_x) : x(input_x) {}
FiniteField() : x(0) {}
int64 Value() { return x; }
inline FiniteField operator+(FiniteField o) {
FiniteField r(*this);
r += o;
return r;
}
inline FiniteField operator-(FiniteField o) {
FiniteField r(*this);
r -= o;
return r;
}
inline FiniteField operator*(FiniteField o) {
FiniteField r(*this);
r *= o;
return r;
}
inline FiniteField operator/(FiniteField o) {
FiniteField r(*this);
r /= o;
return r;
}
inline void operator+=(FiniteField o) { x = (x + o.x) % P; }
inline void operator-=(FiniteField o) { x = (x + P - o.x) % P; }
inline void operator*=(FiniteField o) { x = (x * o.x) % P; }
void operator/=(FiniteField o) {
int64 p = P - 2;
while (p) {
if (p % 2) {
*this *= o;
}
o *= o;
p /= 2;
}
}
};
int main() {
ios::sync_with_stdio(false);
cin.tie(0);
int n, m;
cin >> n >> m;
vector<vector<vector<FiniteField>>> dp(
n + 1, vector<vector<FiniteField>>(n + 1, vector<FiniteField>(m + 1)));
dp[0][0][0] = 1;
for (int i = 0; i < n; i++) {
for (int j = 0; j <= n; j++) {
for (int k = 0; k <= m; k++) {
if (k + 2 * j <= m) {
dp[i + 1][j][k + 2 * j] += dp[i][j][k];
}
if (k + 2 * (j + 1) <= m) {
dp[i + 1][j + 1][k + 2 * (j + 1)] += dp[i][j][k];
}
if (j >= 1 && k + 2 * (j - 1) <= m) {
dp[i + 1][j - 1][k + 2 * (j - 1)] += dp[i][j][k] * j * j;
}
if (j >= 1 && k + 2 * j <= m) {
dp[i + 1][j][k + 2 * j] += dp[i][j][k] * 2 * j;
}
}
}
}
cout << dp[n][0][m].Value() << endl;
}
| #include <bits/stdc++.h>
using namespace std;
using int64 = long long;
constexpr int64 P = 1000000007;
// Verified: ABC133E, ABC132D, ABC130E
struct FiniteField {
private:
int64 x;
public:
FiniteField(int64 input_x) : x(input_x) {}
FiniteField() : x(0) {}
int64 Value() { return x; }
inline FiniteField operator+(FiniteField o) {
FiniteField r(*this);
r += o;
return r;
}
inline FiniteField operator-(FiniteField o) {
FiniteField r(*this);
r -= o;
return r;
}
inline FiniteField operator*(FiniteField o) {
FiniteField r(*this);
r *= o;
return r;
}
inline FiniteField operator/(FiniteField o) {
FiniteField r(*this);
r /= o;
return r;
}
inline void operator+=(FiniteField o) { x = (x + o.x) % P; }
inline void operator-=(FiniteField o) { x = (x + P - o.x) % P; }
inline void operator*=(FiniteField o) { x = (x * o.x) % P; }
void operator/=(FiniteField o) {
int64 p = P - 2;
while (p) {
if (p % 2) {
*this *= o;
}
o *= o;
p /= 2;
}
}
};
int main() {
ios::sync_with_stdio(false);
cin.tie(0);
int n, m;
cin >> n >> m;
vector<vector<vector<FiniteField>>> dp(
n + 1, vector<vector<FiniteField>>(n + 1, vector<FiniteField>(m + 1)));
dp[0][0][0] = 1;
for (int i = 0; i < n; i++) {
for (int j = 0; j <= n; j++) {
for (int k = 0; k <= m; k++) {
if (dp[i][j][k].Value() == 0)
continue;
if (k + 2 * j <= m) {
dp[i + 1][j][k + 2 * j] += dp[i][j][k];
}
if (k + 2 * (j + 1) <= m) {
dp[i + 1][j + 1][k + 2 * (j + 1)] += dp[i][j][k];
}
if (j >= 1 && k + 2 * (j - 1) <= m) {
dp[i + 1][j - 1][k + 2 * (j - 1)] += dp[i][j][k] * j * j;
}
if (j >= 1 && k + 2 * j <= m) {
dp[i + 1][j][k + 2 * j] += dp[i][j][k] * 2 * j;
}
}
}
}
cout << dp[n][0][m].Value() << endl;
}
| insert | 64 | 64 | 64 | 66 | 0 | |
p02974 | C++ | Runtime Error | #include <bits/stdc++.h>
// #include <boost/multiprecision/cpp_int.hpp>
#define int long long
#define inf 1000000007
#define pa pair<int, int>
#define ll long long
#define pal pair<double, double>
#define ppap pair<pa, int>
#define PI 3.14159265358979323846
#define paa pair<int, char>
#define mp make_pair
#define pb push_back
#define EPS (1e-10)
int dx[8] = {0, 1, 0, -1, 1, 1, -1, -1};
int dy[8] = {1, 0, -1, 0, -1, 1, 1, -1};
using namespace std;
class pa3 {
public:
int x;
int y, z;
pa3(int x = 0, int y = 0, int z = 0) : x(x), y(y), z(z) {}
bool operator<(const pa3 &p) const {
if (x != p.x)
return x < p.x;
if (y != p.y)
return y < p.y;
return z < p.z;
// return x != p.x ? x<p.x: y<p.y;
}
bool operator>(const pa3 &p) const {
if (x != p.x)
return x > p.x;
if (y != p.y)
return y > p.y;
return z > p.z;
// return x != p.x ? x<p.x: y<p.y;
}
bool operator==(const pa3 &p) const {
return x == p.x && y == p.y && z == p.z;
}
bool operator!=(const pa3 &p) const {
return !(x == p.x && y == p.y && z == p.z);
}
};
class pa4 {
public:
int x;
int y, z, w;
pa4(int x = 0, int y = 0, int z = 0, int w = 0) : x(x), y(y), z(z), w(w) {}
bool operator<(const pa4 &p) const {
if (x != p.x)
return x < p.x;
if (y != p.y)
return y < p.y;
if (z != p.z)
return z < p.z;
return w < p.w;
// return x != p.x ? x<p.x: y<p.y;
}
bool operator>(const pa4 &p) const {
if (x != p.x)
return x > p.x;
if (y != p.y)
return y > p.y;
if (z != p.z)
return z > p.z;
return w > p.w;
// return x != p.x ? x<p.x: y<p.y;
}
bool operator==(const pa4 &p) const {
return x == p.x && y == p.y && z == p.z && w == p.w;
}
};
class pa2 {
public:
int x, y;
pa2(int x = 0, int y = 0) : x(x), y(y) {}
pa2 operator+(pa2 p) { return pa2(x + p.x, y + p.y); }
pa2 operator-(pa2 p) { return pa2(x - p.x, y - p.y); }
bool operator<(const pa2 &p) const { return y != p.y ? y < p.y : x < p.x; }
bool operator>(const pa2 &p) const { return x != p.x ? x < p.x : y < p.y; }
bool operator==(const pa2 &p) const {
return abs(x - p.x) == 0 && abs(y - p.y) == 0;
}
bool operator!=(const pa2 &p) const {
return !(abs(x - p.x) == 0 && abs(y - p.y) == 0);
}
};
string itos(int i) {
ostringstream s;
s << i;
return s.str();
}
int gcd(int v, int b) {
if (v > b)
return gcd(b, v);
if (v == b)
return b;
if (b % v == 0)
return v;
return gcd(v, b % v);
}
int mod;
int extgcd(int a, int b, int &x, int &y) {
if (b == 0) {
x = 1;
y = 0;
return a;
}
int d = extgcd(b, a % b, y, x);
y -= a / b * x;
return d;
}
pa operator+(const pa &l, const pa &r) {
return {l.first + r.first, l.second + r.second};
}
pa operator-(const pa &l, const pa &r) {
return {l.first - r.first, l.second - r.second};
}
int pr[200010];
int inv[200010];
int beki(int wa, int rr, int warukazu) {
if (rr == 0)
return 1 % warukazu;
if (rr == 1)
return wa % warukazu;
wa %= warukazu;
if (rr % 2 == 1)
return ((ll)beki(wa, rr - 1, warukazu) * (ll)wa) % warukazu;
ll zx = beki(wa, rr / 2, warukazu);
return (zx * zx) % warukazu;
}
int comb(int nn, int rr) {
if (rr < 0 || rr > nn || nn < 0)
return 0;
int r = pr[nn] * inv[rr];
r %= mod;
r *= inv[nn - rr];
r %= mod;
return r;
}
void gya(int ert) {
pr[0] = 1;
for (int i = 1; i <= ert; i++) {
pr[i] = (pr[i - 1] * i) % mod;
}
inv[ert] = beki(pr[ert], mod - 2, mod);
for (int i = ert - 1; i >= 0; i--) {
inv[i] = inv[i + 1] * (i + 1) % mod;
}
}
// cin.tie(0);
// ios::sync_with_stdio(false);
// priority_queue<pa3,vector<pa3>,greater<pa3>> pq;
// sort(ve.begin(),ve.end(),greater<int>());
// mt19937(clock_per_sec);
// mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count()) ;
//----------------kokomade tenpure------------
int dp[60][60][2600] = {};
signed main() {
cin.tie(0);
ios::sync_with_stdio(false);
dp[0][0][0] = 1;
int n, k;
cin >> n >> k;
for (int i = 1; i <= n; i++)
for (int j = 0; j <= i; j++)
for (int h = 0; h <= n * n; h++) {
/*
dp[i+1][j][h+2*(i+1-j)]+= dp[i][j][h]*(i+1-j)%inf;
dp[i+1][j+1][h+] += dp[i][j][h]*
*/
if (j >= 0 && h - 2 * (i - 1 - j + 1) >= 0)
dp[i][j][h] += dp[i - 1][j - 1][h - 2 * (i - 1 - j + 1)];
// if(i==2&& j==2 && h==0) cout<<dp[i][j][h]<<endl;
if (j - 2 >= 0 && h - 2 * (i - 1 - j + 2) >= 0)
dp[i][j][h] += dp[i - 1][j - 2][h - 2 * (i - 1 - j + 2)] *
(i - 1 - j + 2) * (i - 1 - j + 2) % inf;
if (j - 1 >= 0 && h - 2 * (i - 1 - j + 1) >= 0)
dp[i][j][h] +=
dp[i - 1][j - 1][h - 2 * (i - 1 - j + 1)] * (i - 1 - j + 1) % inf;
if (j - 1 >= 0 && h - 2 * (i - 1 - j + 1) >= 0)
dp[i][j][h] +=
dp[i - 1][j - 1][h - 2 * (i - 1 - j + 1)] * (i - 1 - j + 1) % inf;
if (j >= 0 && h - 2 * (i - 1 - j) >= 0)
dp[i][j][h] += dp[i - 1][j][h - 2 * (i - 1 - j)] % inf;
// cout<<i<<" "<<j<<" "<<h<<" "<<dp[i][j][h]<<endl;
dp[i][j][h] %= inf;
}
cout << dp[n][n][k] << endl;
return 0;
}
| #include <bits/stdc++.h>
// #include <boost/multiprecision/cpp_int.hpp>
#define int long long
#define inf 1000000007
#define pa pair<int, int>
#define ll long long
#define pal pair<double, double>
#define ppap pair<pa, int>
#define PI 3.14159265358979323846
#define paa pair<int, char>
#define mp make_pair
#define pb push_back
#define EPS (1e-10)
int dx[8] = {0, 1, 0, -1, 1, 1, -1, -1};
int dy[8] = {1, 0, -1, 0, -1, 1, 1, -1};
using namespace std;
class pa3 {
public:
int x;
int y, z;
pa3(int x = 0, int y = 0, int z = 0) : x(x), y(y), z(z) {}
bool operator<(const pa3 &p) const {
if (x != p.x)
return x < p.x;
if (y != p.y)
return y < p.y;
return z < p.z;
// return x != p.x ? x<p.x: y<p.y;
}
bool operator>(const pa3 &p) const {
if (x != p.x)
return x > p.x;
if (y != p.y)
return y > p.y;
return z > p.z;
// return x != p.x ? x<p.x: y<p.y;
}
bool operator==(const pa3 &p) const {
return x == p.x && y == p.y && z == p.z;
}
bool operator!=(const pa3 &p) const {
return !(x == p.x && y == p.y && z == p.z);
}
};
class pa4 {
public:
int x;
int y, z, w;
pa4(int x = 0, int y = 0, int z = 0, int w = 0) : x(x), y(y), z(z), w(w) {}
bool operator<(const pa4 &p) const {
if (x != p.x)
return x < p.x;
if (y != p.y)
return y < p.y;
if (z != p.z)
return z < p.z;
return w < p.w;
// return x != p.x ? x<p.x: y<p.y;
}
bool operator>(const pa4 &p) const {
if (x != p.x)
return x > p.x;
if (y != p.y)
return y > p.y;
if (z != p.z)
return z > p.z;
return w > p.w;
// return x != p.x ? x<p.x: y<p.y;
}
bool operator==(const pa4 &p) const {
return x == p.x && y == p.y && z == p.z && w == p.w;
}
};
class pa2 {
public:
int x, y;
pa2(int x = 0, int y = 0) : x(x), y(y) {}
pa2 operator+(pa2 p) { return pa2(x + p.x, y + p.y); }
pa2 operator-(pa2 p) { return pa2(x - p.x, y - p.y); }
bool operator<(const pa2 &p) const { return y != p.y ? y < p.y : x < p.x; }
bool operator>(const pa2 &p) const { return x != p.x ? x < p.x : y < p.y; }
bool operator==(const pa2 &p) const {
return abs(x - p.x) == 0 && abs(y - p.y) == 0;
}
bool operator!=(const pa2 &p) const {
return !(abs(x - p.x) == 0 && abs(y - p.y) == 0);
}
};
string itos(int i) {
ostringstream s;
s << i;
return s.str();
}
int gcd(int v, int b) {
if (v > b)
return gcd(b, v);
if (v == b)
return b;
if (b % v == 0)
return v;
return gcd(v, b % v);
}
int mod;
int extgcd(int a, int b, int &x, int &y) {
if (b == 0) {
x = 1;
y = 0;
return a;
}
int d = extgcd(b, a % b, y, x);
y -= a / b * x;
return d;
}
pa operator+(const pa &l, const pa &r) {
return {l.first + r.first, l.second + r.second};
}
pa operator-(const pa &l, const pa &r) {
return {l.first - r.first, l.second - r.second};
}
int pr[200010];
int inv[200010];
int beki(int wa, int rr, int warukazu) {
if (rr == 0)
return 1 % warukazu;
if (rr == 1)
return wa % warukazu;
wa %= warukazu;
if (rr % 2 == 1)
return ((ll)beki(wa, rr - 1, warukazu) * (ll)wa) % warukazu;
ll zx = beki(wa, rr / 2, warukazu);
return (zx * zx) % warukazu;
}
int comb(int nn, int rr) {
if (rr < 0 || rr > nn || nn < 0)
return 0;
int r = pr[nn] * inv[rr];
r %= mod;
r *= inv[nn - rr];
r %= mod;
return r;
}
void gya(int ert) {
pr[0] = 1;
for (int i = 1; i <= ert; i++) {
pr[i] = (pr[i - 1] * i) % mod;
}
inv[ert] = beki(pr[ert], mod - 2, mod);
for (int i = ert - 1; i >= 0; i--) {
inv[i] = inv[i + 1] * (i + 1) % mod;
}
}
// cin.tie(0);
// ios::sync_with_stdio(false);
// priority_queue<pa3,vector<pa3>,greater<pa3>> pq;
// sort(ve.begin(),ve.end(),greater<int>());
// mt19937(clock_per_sec);
// mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count()) ;
//----------------kokomade tenpure------------
int dp[60][60][2600] = {};
signed main() {
cin.tie(0);
ios::sync_with_stdio(false);
dp[0][0][0] = 1;
int n, k;
cin >> n >> k;
for (int i = 1; i <= n; i++)
for (int j = 0; j <= i; j++)
for (int h = 0; h <= n * n; h++) {
/*
dp[i+1][j][h+2*(i+1-j)]+= dp[i][j][h]*(i+1-j)%inf;
dp[i+1][j+1][h+] += dp[i][j][h]*
*/
if (j - 1 >= 0 && h - 2 * (i - 1 - j + 1) >= 0)
dp[i][j][h] += dp[i - 1][j - 1][h - 2 * (i - 1 - j + 1)];
// if(i==2&& j==2 && h==0) cout<<dp[i][j][h]<<endl;
if (j - 2 >= 0 && h - 2 * (i - 1 - j + 2) >= 0)
dp[i][j][h] += dp[i - 1][j - 2][h - 2 * (i - 1 - j + 2)] *
(i - 1 - j + 2) * (i - 1 - j + 2) % inf;
if (j - 1 >= 0 && h - 2 * (i - 1 - j + 1) >= 0)
dp[i][j][h] +=
dp[i - 1][j - 1][h - 2 * (i - 1 - j + 1)] * (i - 1 - j + 1) % inf;
if (j - 1 >= 0 && h - 2 * (i - 1 - j + 1) >= 0)
dp[i][j][h] +=
dp[i - 1][j - 1][h - 2 * (i - 1 - j + 1)] * (i - 1 - j + 1) % inf;
if (j >= 0 && h - 2 * (i - 1 - j) >= 0)
dp[i][j][h] += dp[i - 1][j][h - 2 * (i - 1 - j)] % inf;
// cout<<i<<" "<<j<<" "<<h<<" "<<dp[i][j][h]<<endl;
dp[i][j][h] %= inf;
}
cout << dp[n][n][k] << endl;
return 0;
}
| replace | 187 | 188 | 187 | 188 | 0 | |
p02974 | C++ | Runtime Error | #include <algorithm>
#include <climits>
#include <cmath>
#include <cstring>
#include <deque>
#include <iomanip>
#include <iostream>
#include <map>
#include <queue>
#include <set>
#include <stack>
#include <unordered_map>
#include <unordered_set>
#include <utility>
#include <vector>
using namespace std;
using lint = long long;
using P = pair<int, int>;
using LLP = pair<long long, long long>;
#define REP(i, x, n) for (int i = (x), i##_len = int(n); i < i##_len; ++i)
#define rep(i, n) for (int i = 0, i##_len = int(n); i < i##_len; ++i)
#define reps(i, n) for (int i = 1, i##_len = int(n); i <= i##_len; ++i)
#define rrep(i, n) for (int i = int(n) - 1; i >= 0; --i)
#define rreps(i, n) for (int i = int(n); i > 0; --i)
#define SORT(x) sort((x).begin(), (x).end())
#define SORT_INV(x) sort((x).rbegin(), (x).rend())
#define TWINS(x) cout << ((x) ? "Yay!" : ":(") << endl
const int IINF = (1 << 30) - 1;
const long long LLINF = 1LL << 61;
const int dx4[] = {1, 0, -1, 0}, dy4[] = {0, 1, 0, -1};
const int dx8[] = {1, 1, 0, -1, -1, -1, 0, 1},
dy8[] = {0, -1, -1, -1, 0, 1, 1, 1};
const double EPS = 1e-8;
template <long long modulus> class ModInt {
long long num;
long long mod(long long n) {
if (n < 0LL) {
n += (abs(n + 1LL) / modulus + 1LL) * modulus;
}
return n % modulus;
}
long long ext_gcd(long long a, long long b, long long &x, long long &y) {
if (b == 0LL) {
x = 1;
y = 0;
return a;
}
long long d = ext_gcd(b, a % b, y, x);
y -= a / b * x;
return d;
}
long long get_inv(long long n) {
long long x, y;
ext_gcd(n, modulus, x, y);
return mod(x);
}
public:
ModInt(long long n = 0LL) { init(n); }
void init(long long n = 0LL) {
num = mod(n);
return;
}
long long get(void) { return num; }
ModInt &operator+=(const ModInt &rhs) {
num += rhs.num;
if (num >= modulus) {
num -= modulus;
}
return *this;
}
ModInt &operator-=(const ModInt &rhs) {
num -= rhs.num;
if (num < 0LL) {
num += modulus;
}
return *this;
}
ModInt &operator*=(const ModInt &rhs) {
num = num * rhs.num % modulus;
return *this;
}
ModInt &operator/=(const ModInt &rhs) {
long long inv = get_inv(rhs.num);
num = num * inv % modulus;
return *this;
}
ModInt operator+(const ModInt &rhs) const { return ModInt(*this) += rhs; }
ModInt operator-(const ModInt &rhs) const { return ModInt(*this) -= rhs; }
ModInt operator*(const ModInt &rhs) const { return ModInt(*this) *= rhs; }
ModInt operator/(const ModInt &rhs) const { return ModInt(*this) /= rhs; }
ModInt &operator=(const ModInt &rhs) {
num = rhs.num;
return *this;
}
bool operator<(const ModInt &rhs) const { return num < rhs.num; }
};
template <long long modulus>
istream &operator>>(istream &lhs, ModInt<modulus> &rhs) {
long long val;
lhs >> val;
rhs.init(val);
return lhs;
}
template <long long modulus>
ostream &operator<<(ostream &lhs, ModInt<modulus> rhs) {
lhs << rhs.get();
return lhs;
}
using mint = ModInt<1000000007LL>;
template <typename T> bool chmax(T &a, T b) {
if (a < b) {
a = b;
return true;
}
return false;
}
template <typename T> bool chmin(T &a, T b) {
if (b < a) {
a = b;
return true;
}
return false;
}
int main() {
cin.tie(0);
ios::sync_with_stdio(false);
int n, k;
cin >> n >> k;
// int maxi = 0;
// rep(i, n){
// maxi += abs(i - (n + ~i));
// }
// if((k & 1) || k > maxi){
// cout << 0 << endl;
// return 0;
// }
mint dp[51][51][251];
dp[0][0][0] = mint(1);
rep(i, n) {
rep(j, i + 1) {
rep(l, k + 1) {
if (2 * j + l <= k) {
dp[i + 1][j][2 * j + l] += dp[i][j][l] * mint(2 * j + 1);
}
if (j && 2 * j + l - 2 <= k) {
dp[i + 1][j - 1][2 * j + l - 2] += dp[i][j][l] * mint(j * j);
}
if (2 * j + l + 2 <= k) {
dp[i + 1][j + 1][2 * j + l + 2] += dp[i][j][l];
}
}
}
}
cout << dp[n][0][k] << endl;
return 0;
} | #include <algorithm>
#include <climits>
#include <cmath>
#include <cstring>
#include <deque>
#include <iomanip>
#include <iostream>
#include <map>
#include <queue>
#include <set>
#include <stack>
#include <unordered_map>
#include <unordered_set>
#include <utility>
#include <vector>
using namespace std;
using lint = long long;
using P = pair<int, int>;
using LLP = pair<long long, long long>;
#define REP(i, x, n) for (int i = (x), i##_len = int(n); i < i##_len; ++i)
#define rep(i, n) for (int i = 0, i##_len = int(n); i < i##_len; ++i)
#define reps(i, n) for (int i = 1, i##_len = int(n); i <= i##_len; ++i)
#define rrep(i, n) for (int i = int(n) - 1; i >= 0; --i)
#define rreps(i, n) for (int i = int(n); i > 0; --i)
#define SORT(x) sort((x).begin(), (x).end())
#define SORT_INV(x) sort((x).rbegin(), (x).rend())
#define TWINS(x) cout << ((x) ? "Yay!" : ":(") << endl
const int IINF = (1 << 30) - 1;
const long long LLINF = 1LL << 61;
const int dx4[] = {1, 0, -1, 0}, dy4[] = {0, 1, 0, -1};
const int dx8[] = {1, 1, 0, -1, -1, -1, 0, 1},
dy8[] = {0, -1, -1, -1, 0, 1, 1, 1};
const double EPS = 1e-8;
template <long long modulus> class ModInt {
long long num;
long long mod(long long n) {
if (n < 0LL) {
n += (abs(n + 1LL) / modulus + 1LL) * modulus;
}
return n % modulus;
}
long long ext_gcd(long long a, long long b, long long &x, long long &y) {
if (b == 0LL) {
x = 1;
y = 0;
return a;
}
long long d = ext_gcd(b, a % b, y, x);
y -= a / b * x;
return d;
}
long long get_inv(long long n) {
long long x, y;
ext_gcd(n, modulus, x, y);
return mod(x);
}
public:
ModInt(long long n = 0LL) { init(n); }
void init(long long n = 0LL) {
num = mod(n);
return;
}
long long get(void) { return num; }
ModInt &operator+=(const ModInt &rhs) {
num += rhs.num;
if (num >= modulus) {
num -= modulus;
}
return *this;
}
ModInt &operator-=(const ModInt &rhs) {
num -= rhs.num;
if (num < 0LL) {
num += modulus;
}
return *this;
}
ModInt &operator*=(const ModInt &rhs) {
num = num * rhs.num % modulus;
return *this;
}
ModInt &operator/=(const ModInt &rhs) {
long long inv = get_inv(rhs.num);
num = num * inv % modulus;
return *this;
}
ModInt operator+(const ModInt &rhs) const { return ModInt(*this) += rhs; }
ModInt operator-(const ModInt &rhs) const { return ModInt(*this) -= rhs; }
ModInt operator*(const ModInt &rhs) const { return ModInt(*this) *= rhs; }
ModInt operator/(const ModInt &rhs) const { return ModInt(*this) /= rhs; }
ModInt &operator=(const ModInt &rhs) {
num = rhs.num;
return *this;
}
bool operator<(const ModInt &rhs) const { return num < rhs.num; }
};
template <long long modulus>
istream &operator>>(istream &lhs, ModInt<modulus> &rhs) {
long long val;
lhs >> val;
rhs.init(val);
return lhs;
}
template <long long modulus>
ostream &operator<<(ostream &lhs, ModInt<modulus> rhs) {
lhs << rhs.get();
return lhs;
}
using mint = ModInt<1000000007LL>;
template <typename T> bool chmax(T &a, T b) {
if (a < b) {
a = b;
return true;
}
return false;
}
template <typename T> bool chmin(T &a, T b) {
if (b < a) {
a = b;
return true;
}
return false;
}
int main() {
cin.tie(0);
ios::sync_with_stdio(false);
int n, k;
cin >> n >> k;
// int maxi = 0;
// rep(i, n){
// maxi += abs(i - (n + ~i));
// }
// if((k & 1) || k > maxi){
// cout << 0 << endl;
// return 0;
// }
mint dp[51][51][2501];
dp[0][0][0] = mint(1);
rep(i, n) {
rep(j, i + 1) {
rep(l, k + 1) {
if (2 * j + l <= k) {
dp[i + 1][j][2 * j + l] += dp[i][j][l] * mint(2 * j + 1);
}
if (j && 2 * j + l - 2 <= k) {
dp[i + 1][j - 1][2 * j + l - 2] += dp[i][j][l] * mint(j * j);
}
if (2 * j + l + 2 <= k) {
dp[i + 1][j + 1][2 * j + l + 2] += dp[i][j][l];
}
}
}
}
cout << dp[n][0][k] << endl;
return 0;
} | replace | 169 | 170 | 169 | 170 | 0 | |
p02974 | C++ | Time Limit Exceeded | #define _USE_MATH_DEFINES
#define _SILENCE_CXX17_C_HEADER_DEPRECATION_WARNING
#define _SILENCE_ALL_CXX17_DEPRECATION_WARNINGS
#define _CRT_SECURE_NO_WARNINGS
#include <bits/stdc++.h>
#include <immintrin.h>
#include <mmintrin.h>
#include <nmmintrin.h>
using namespace std;
#define dprint(Exp, ...) \
if (Exp) { \
fprintf(stderr, __VA_ARGS__); \
}
#define printe(...) fprintf(stderr, __VA_ARGS__);
#define PrtExp(_Exp) cerr << #_Exp << " = " << (_Exp)
#define PrtExpN(_Exp) cerr << #_Exp << " = " << (_Exp) << "\n"
#define SINT(n) scanf("%d", &n)
#define SINT2(n, m) scanf("%d %d", &n, &m)
#define SINT3(n, m, o) scanf("%d %d %d", &n, &m, &o)
#define SINT4(n, m, o, P) scanf("%d %d %d %d", &n, &m, &o, &P)
#define SINT5(n, m, o, P, q) scanf("%d %d %d %d %d", &n, &m, &o, &P, &q)
#define SLL(n) scanf("%lld", &n)
#define SLL2(n, m) scanf("%lld %lld", &n, &m)
#define SLL3(n, m, o) scanf("%lld %lld %lld", &n, &m, &o)
#define SST(s) scanf("%s", s)
#define SCH(c) scanf("%c", &c)
#define GC() getchar()
#define PINT(n) printf("%d", (int)(n))
#define PINT2(n, m) printf("%d %d", (int)(n), (int)(m))
#define PINT3(n, m, l) printf("%d %d %d", (int)(n), (int)(m), (int)(l))
#define PLL(n) printf("%lld", (long long)(n))
#define PST(s) printf("%s", (s))
#define PCH(s) printf("%c", (s))
#define PINTN(n) printf("%d\n", (int)(n))
#define PINT2N(n, m) printf("%d %d\n", (int)(n), (int)(m))
#define PINT3N(n, m, l) printf("%d %d %d\n", (int)(n), (int)(m), (int)(l))
#define PLLN(n) printf("%lld\n", (long long)(n))
#define PSTN(s) printf("%s\n", (s))
#define PCHN(s) printf("%c\n", (s))
#define PSP() printf(" ")
#define PN() printf("\n")
#define PC(c) putchar(c)
#define CSP (' ')
#define SN ("\n")
#define rep(i, a) for (int i = 0; i < a; i++)
#define reP(i, a) for (int i = 0; i <= a; i++)
#define Rep(i, a) for (int i = a - 1; i >= 0; i--)
#define ReP(i, a) for (int i = a; i >= 0; i--)
#define rEp(i, a) for (i = 0; i < a; i++)
#define rEP(i, a) for (i = 0; i <= a; i++)
#define REp(i, a) for (i = a - 1; i >= 0; i--)
#define REP(i, a) for (i = a; i >= 0; i--)
#define repft(i, a, b) for (int i = a; i < b; i++)
#define repfT(i, a, b) for (int i = a; i <= b; i++)
#define Repft(i, a, b) for (int i = a - 1; i >= b; i--)
#define RepfT(i, a, b) for (int i = a; i >= b; i--)
#define foreach(a, it) for (auto it = a.begin(); it != a.end(); ++it)
#define FILL(a, v) fill(begin(a), end(a), v)
#define FILL0(a) memset(a, 0, sizeof(a))
#define FILL1(a) memset(a, -1, sizeof(a))
typedef long long ll;
typedef unsigned long long ull;
typedef pair<int, int> Pi;
typedef pair<ll, ll> Pll;
const int INF = 1'010'000'000; // 0x3C33'6080
const ll INFLL = 0x1f1f1f1f1f1f1f1fLL; // 2,242,545,357,980,376,863
template <class A, class B>
inline ostream &operator<<(ostream &st, const pair<A, B> &P) {
return st << "(" << P.first << "," << P.second << ")";
};
template <class A, class B>
inline pair<A, B> operator+(const pair<A, B> &P, const pair<A, B> &Q) {
return pair<A, B>(P.first + Q.first, P.second + Q.second);
};
template <class A, class B>
inline pair<A, B> operator-(const pair<A, B> &P, const pair<A, B> &Q) {
return pair<A, B>(P.first - Q.first, P.second - Q.second);
};
#define fs first
#define sc second
const ll M = 1000000007;
int solve(int n, int k) {
int a[50];
rep(i, n) a[i] = i;
int ret = 0;
do {
int b = 0;
rep(i, n) { b += abs(a[i] - i); }
if (b == k) {
// cout << "| "; rep(i, n) cout << a[i] + 1 << " "; cout << endl;
if (++ret >= M)
ret = 0;
}
} while (next_permutation(a, a + n));
return ret;
}
int n, k;
ll memo[64][4096];
ll dfs(int i, int r) {
if (r == 0)
return 1;
if (i == n) {
/*
if (r <= n) return 1;
return 0;
*/
return 0;
}
if (memo[i][r] >= 0)
return memo[i][r];
ll ret = 0;
reP(w, n - i + 1) {
if (r < w)
break;
ret += dfs(i + 1, r - w);
ret %= M;
}
printf("dsf(%d, %d) : %lld\n", i, r, ret);
return memo[i][r] = ret;
}
/*
1;
1, 1;
1, 2, 3;
1, 3, 7, 9, 4;
1, 4, 12, 24, 35, 24, 20
*/
int dat[] = {
1, 1, 1, 1, 2, 3, 1,
3, 7, 9, 4, 1, 4, 12,
24, 35, 24, 20, 1, 5, 18,
46, 93, 137, 148, 136, 100, 36,
1, 6, 25, 76, 187, 366, 591,
744, 884, 832, 716, 360, 252, 1,
7, 33, 115, 327, 765, 1523, 2553,
3696, 4852, 5708, 5892, 5452, 4212, 2844,
1764, 576, 1, 8, 42, 164, 524,
1400, 3226, 6436, 11323, 17640, 25472, 33280,
40520, 44240, 45512, 40608, 35496, 25632, 18108,
8064, 5184, 1, 9, 52, 224, 790,
2350, 6072, 13768, 27821, 50461, 83420, 127840,
182256, 242272, 301648, 350864, 382576, 389232, 373536,
332640, 273060, 208548, 136512, 81792, 46656, 14400,
1, 10, 63, 296, 1138, 3708, 10538,
26480, 59673, 121626, 226787, 390144, 628744, 949472,
1355952, 1826464, 2341600, 2833632, 3282464, 3584160, 3765600,
3719664, 3531924, 3093336, 2642364, 2010240, 1508544, 963072,
621504, 259200, 158400, 1, 11, 75, 381,
1582, 5582, 17222, 47194, 116457, 261163, 537459,
1022981, 1817652, 3040352, 4810720, 7230928, 10360160, 14178912,
18577792, 23327872, 28132048, 32571504, 36310464, 38903904, 40028724,
39552156, 37457388, 33941412, 29314944, 24179904, 18835776, 13777344,
9452736, 5716800, 3211200, 1742400, 518400, 1, 12,
88, 480, 2137, 8096, 26860, 79376, 211811,
515308, 1153268, 2391936, 4633331, 8438664, 14557048, 23874176,
37407760, 56117824, 80906752, 112162240, 150052400, 193572736, 241706624,
291576384, 341323776, 386160048, 424359540, 450394992, 464545584, 461528208,
446428476, 413557632, 373573440, 321120000, 268449408, 210332160, 162330624,
112550400, 77788800, 46540800, 28497600, 11404800, 6739200, 1,
13, 102, 594, 2819, 11391, 40344, 127508,
364587, 952559, 2293742, 5126898, 10710633, 21042989, 39117852,
69175664, 116857024, 189256368, 294745440, 442503456, 641759376, 900689616,
225195321, 617201401, 74227554, 586823330, 140227131, 711888699, 274217080,
795069832, 242715461, 585116357, 796764497, 861974465, 769155485, 525176285,
146566301, 650715556, 73773796, 455145195, 828946802, 226153586, 685663993,
216281593, 828705600, 536385600, 309484800, 166924800, 87609600, 25401600,
1, 14, 117, 724, 3645, 15626, 58741,
197280, 600215, 1671266, 4295107, 10259436, 22922995, 48184950,
95816051, 181136304, 327071752, 566117888, 942525072, 513281017, 349163810,
532145419, 154557773, 309226767, 88509354, 563257605, 789064441, 766807654,
474675580, 795689314, 599134613, 627066840, 658988947, 307608398, 337632800,
295701193, 44870369, 150212311, 705302359, 336038622, 452522163, 797367958,
62674553, 57993322, 777736994, 845298906, 452367755, 90655804, 810196653,
976943895, 564798323, 582118351, 994783972, 869862386, 697759993, 660441600,
381024000, 1, 15, 133, 871, 4633, 20979,
83313, 295803, 952299, 2809009, 7656027, 19414457, 46086247,
102967901, 217634463, 437195525, 838372452, 540635289, 722168530, 638311860,
640827391, 196046908, 898688562, 478199884, 793020369, 808862771, 562236075,
94791602, 385333320, 237794527, 197694759, 398043392, 504456766, 579736664,
78137089, 793367253, 961295251, 280517488, 179779783, 947563092, 901772777,
859566930, 199212409, 920781370, 362900807, 735004334, 297264154, 482748036,
653703312, 140400674, 623159781, 320434095, 373194802, 13313867, 205909676,
360223815, 570584277, 68075848, 372652149, 961247580, 23084534, 261139053,
151302323, 715359965, 625702393, 1, 16, 150, 1036,
5802, 27648, 115538, 431844, 1464468, 4554040, 13096378,
35069940, 87969166, 207781760, 464351910, 986188668, 998611836, 879505923,
237509223, 15110629, 621334822, 88677622, 257578542, 963016850, 235638961,
442107823, 429101453, 483004748, 329733855, 718448185, 266304376, 413950543,
256286771, 626720357, 318467482, 59069608, 81901162, 352730851, 104241055,
503595237, 956355036, 534522134, 457799859, 108929893, 887297322, 424614770,
265024591, 876853471, 515703045, 692038809, 210906163, 20070317, 468291405,
145357835, 797577421, 232358134, 747771239, 343859985, 833879609, 78548665,
289896769, 449285934, 313197004, 379603290, 397630660, 609910102, 442642726,
627950853, 722186028, 705163253, 998661511, 771071664, 636940611, 1,
17, 168, 1220, 7172, 35852, 157132, 616084,
2192506, 7159090, 21631676, 60902460, 160707468, 399489140, 939796228,
101060910, 481320121, 151453550, 952463061, 931694473, 957528293, 554162053,
990142499, 644946993, 651797781, 791594351, 556120466, 271969917, 107619398,
710253075, 280526462, 615698879, 99748930, 775178221, 257586036, 645364809,
806795120, 340635512, 801741075, 790520661, 68328385, 331513794, 351728404,
931812262, 91105169, 176869824, 445724501, 370449983, 359815736, 918724628,
869062973, 659791249, 657727222, 395793733, 32692523, 78858425, 151369211,
628504487, 842750087, 152091477, 889718876, 908002421, 944598446, 656459208,
712920845, 47550280, 92244967, 110652620, 951703750, 217822851, 901098263,
655149074, 861896271, 859184013, 992613245, 768042116, 807916959, 335381553,
909568095, 153171069, 827990317, 681893483, 1, 18, 187,
1424, 8764, 45832, 210072, 861400, 3206786, 10957868,
34666130, 102239488, 282743580, 736889224, 817936097, 262532028, 534038590,
412279142, 965109380, 86702267, 846482566, 945052509, 644517943, 548776024,
679330947, 152291502, 882910517, 188127435, 636778925, 902059202, 132531208,
193904122, 893705022, 246193070, 652079051, 958060250, 148697872, 504141990,
371410212, 807466717, 514477363, 565424570, 560794838, 11419155, 215137208,
665710713, 791504234, 359367396, 224050172, 509091270, 125989128, 782600310,
957126038, 667219607, 386301613, 605448653, 296557741, 618019404, 194294675,
222923480, 765962783, 743934970, 24324611, 512643153, 214242880, 286900578,
228877964, 91240846, 430467141, 533029377, 904804693, 373207899, 916503101,
83598539, 560288494, 363356684, 68282446, 152683809, 284461190, 124425011,
167972327, 428909487, 373215034, 420008537, 513304383, 874743039, 487193257,
97337408, 532639641, 184378261, 955976093, 1, 19, 207,
1649, 10600, 57852, 276620, 1183172, 4595034, 16384606,
54107670, 166643130, 481442164, 311240781, 381378831, 288429444, 380463632,
370477330, 171662912, 688513797, 626045604, 789881798, 844990830, 70546834,
230422087, 267733218, 970080423, 75064762, 104073936, 888990608, 393490487,
819401315, 362017415, 197941501, 97730360, 491049732, 790022455, 142301163,
381999002, 81566974, 255547256, 500580164, 503785886, 874661360, 953064009,
357278689, 416715628, 656421867, 311332859, 849655408, 575613107, 850236831,
533549113, 255339339, 611845477, 501164398, 135987981, 672393680, 678611757,
552403430, 470027818, 333312311, 203812034, 929380798, 133842121, 497262544,
839881753, 29703780, 133717366, 249364505, 959337844, 632980495, 72879056,
356819838, 662140760, 182352973, 260787823, 329159184, 423643610, 488600943,
164109163, 8143787, 184454683, 684285006, 693158498, 382122550, 488552031,
777204359, 564238497, 598675373, 603916585, 720234840, 93182262, 238936257,
486420235, 352604922, 958291193, 880928218, 736558676, 163545641, 189347824,
1, 20, 228, 1896, 12703, 72200, 359348,
1599616, 6465450, 23997032, 82508708, 264654080, 796563486, 260832418,
76986106, 528774007, 854313906, 307546108, 722735109, 61004626, 805619536,
18191861, 511411798, 993782454, 401030744, 633897378, 70862649, 96855526,
314416445, 92910833, 135520920, 492052755, 24334887, 643976444, 574388511,
317610455, 122930943, 637889505, 255461238, 950861369, 48876234, 149504663,
198682481, 942670278, 866921314, 563621302, 960474580, 980132644, 624295523,
399490883, 351714973, 945626033, 827908349, 157456205, 481861323, 472454109,
343580291, 683697065, 95059407, 841332348, 464714941, 596887160, 38681949,
757883329, 590303711, 64921694, 730086270, 15240461, 714742087, 32874447,
175996750, 277466516, 788882909, 11880203, 95097385, 778398376, 531252352,
479554466, 557013590, 609738833, 798714176, 859324339, 721484640, 268442938,
861267595, 806087188, 31691029, 950412807, 580575404, 849451646, 691790951,
264837637, 967322620, 365040170, 622467624, 456436788, 658680316, 60575186,
387550026, 215002020, 31349904, 449373833, 559514745, 640364153, 807042078,
450172023, 562637973, 109112418, 545193132, 195217263, 976304283, 1,
21, 250, 2166, 15097, 89189, 461164, 2132144,
8950214, 34503182, 123236828, 410729140, 284813823, 790835929, 594736274,
153822108, 374418504, 157537842, 147846917, 133568389, 483576696, 508616649,
656867821, 84463125, 640047601, 955370715, 182167616, 49108700, 229345632,
795610484, 502493987, 857101031, 142485158, 996679960, 742503997, 723858587,
317526153, 365342533, 250775491, 442738912, 408346120, 881242865, 135363327,
231979623, 347291745, 824934645, 995772018, 164592917, 354883487, 450805745,
963969802, 171006181, 92161176, 169883419, 961669090, 26844445, 393784092,
571606470, 464707158, 34144520, 652396373, 745405475, 202923498, 135935314,
703695236, 776259115, 48310283, 874186699, 219390686, 510394758, 751965065,
418424556, 8781061, 736058807, 674014147, 674780706, 590530540, 4352977,
803825827, 167292329, 541083402, 260679638, 665083995, 939990721, 816665296,
886017767, 669822229, 694816125, 643235536, 937314556, 115942268, 261159535,
687177905, 12245758, 694615643, 977706180, 217949106, 118952653, 898868241,
856650616, 42954342, 330321980, 535121720, 982503521, 719423135, 714354007,
18745970, 333448882, 302037622, 935654015, 778423936, 317991952, 284756555,
504736970, 155871365, 118263505, 797065125, 640838446, 258037348, 34344762,
502389803, 911086550, 1, 22, 273, 2460, 17807,
109158, 585339, 2805752, 12209406, 48792492, 180680070, 624410736,
25734764, 199973794, 977710523, 571365953, 412869707, 328237414, 214863466,
633048751, 257394955, 317735309, 673309005, 193600985, 704135816, 514918834,
650479735, 33606857, 490034801, 698396427, 67986999, 220797055, 218864611,
931163713, 940790978, 675674698, 85542051, 543018292, 61247584, 910803604,
831296179, 923943160, 89478028, 104500393, 161998091, 254912705, 539249258,
547749719, 357852173, 690014841, 206926249, 893887199, 747112232, 382059625,
148865046, 301618706, 260333115, 442306036, 247371284, 782005651, 233300621,
920894203, 317455792, 678639547, 427050277, 482884001, 854060466, 980543322,
860769666, 701293636, 771136168, 670745480, 486701027, 168461356, 848787800,
289825171, 498776317, 33320170, 430165721, 821516580, 115533370, 398776967,
333310602, 563097053, 553134182, 219816464, 216637272, 206027601, 933677337,
925510467, 267639197, 43693887, 486722546, 270929495, 877730912, 261947307,
375318068, 692508932, 989184491, 226696206, 288508969, 739837562, 849035543,
782296408, 273955665, 801085382, 431898190, 935043965, 202752072, 867866169,
151133676, 67940990, 78118516, 742654574, 165553271, 254022475, 668960857,
929973305, 656759571, 877339826, 925206924, 133648890, 623964326, 796176354,
256442424, 844384225, 955053908, 35821657, 33969824, 328610099, 171474448,
265634834, 954990510, 1, 23, 297, 2779, 20859,
132473, 735535, 3649437, 16435370, 67971642, 260491974, 931772466,
129241853, 915880695, 773220207, 21124907, 663657824, 89235883, 562087424,
395633225, 79602143, 818737728, 503346111, 923762587, 810187543, 71950684,
872552891, 722894374, 788701216, 792043650, 839896539, 577542972, 345484502,
350106805, 159630680, 594479078, 806985602, 451202244, 562057157, 345406448,
404888318, 371479292, 122121086, 196184273, 855722413, 625056343, 209132008,
580725504, 234791519, 683270249, 879431955, 820639155, 890517789, 877206124,
780147370, 943542736, 532169988, 134361777, 389279830, 486085405, 212150153,
60309713, 36144061, 220641769, 167907687, 433032241, 672669299, 4840381,
543970499, 860603358, 920463673, 899153827, 269139419, 99866794, 833550296,
732963165, 649634036, 220976898, 948879986, 81746947, 249278044, 943429751,
227240067, 617290217, 857759442, 317672542, 702411387, 392102340, 598392406,
771484657, 20769431, 772211314, 777981688, 103043307, 336611982, 922346108,
46010568, 620920750, 740298345, 143296430, 127113300, 229361025, 452883985,
298773134, 583669967, 430943791, 878469881, 498554889, 377075156, 399618101,
518539100, 610655946, 762624102, 339746521, 193491143, 582788075, 58498274,
139175929, 439487543, 659039143, 969039085, 205473123, 149794944, 735361805,
144310487, 952281582, 885994682, 290034640, 449859219, 870975475, 717604104,
930837761, 466542500, 510501275, 368063612, 61813298, 959329905, 938922014,
660077190, 12025968, 335011033, 657136343, 351072920, 964781583, 196462283,
1, 24, 322, 3124, 24280, 159528, 915834,
4696644, 21857553, 93405656, 369882084, 367190881, 745178532, 541448535,
237690972, 408537702, 191376116, 678513161, 493570976, 397907192, 9101765,
658714208, 122356973, 514532531, 911169029, 6916896, 782796, 910119724,
942560918, 62371227, 773940129, 523667340, 669757203, 42568262, 891666384,
467022993, 486796667, 727294526, 413613585, 787453753, 599953158, 417187968,
359849625, 117069116, 879478181, 12380000, 910899870, 838986319, 102687453,
103327364, 376800830, 429223538, 780159138, 706916356, 587575355, 971169352,
36010810, 483798044, 344462034, 787276711, 359714668, 737585540, 514856433,
506547585, 7966248, 935961, 931790046, 725219981, 437246235, 737823353,
539625329, 101294921, 998345360, 158678756, 14552916, 434899855, 58679632,
771567929, 908041362, 370603042, 958461645, 473954165, 329932246, 645017860,
950250115, 632956030, 39737256, 308287817, 593859369, 848980890, 73354610,
67983312, 794665532, 744501399, 571146358, 79777328, 768540650, 301591668,
87146707, 749547055, 542914952, 113807115, 981646049, 443442346, 689844336,
226785366, 664441023, 644644459, 65534356, 186334852, 433121661, 818953887,
687026114, 344822747, 464015963, 110899493, 294091084, 65199948, 37449794,
719226153, 501099656, 413337315, 725255533, 799293560, 259962068, 954615054,
373654234, 764439094, 914044890, 22085466, 539035590, 698634111, 313016212,
98993468, 941478268, 955683335, 902077766, 420565422, 767959775, 128648986,
355285226, 534029655, 104714136, 932643222, 778200211, 56428536, 225880543,
792355687, 449940761, 181471652, 529937629, 325235521, 6575392, 94094707,
441392085, 37264955, 911557047, 1, 25, 348, 3496,
28098, 190746, 1130768, 5985744, 28747851, 126764795, 517958180,
975500521, 75313899, 914923483, 611051644, 458281681, 932346365, 712529240,
185024083, 463834094, 950836649, 286357381, 871292163, 434939852, 58330077,
629835295, 27932676, 66354549, 10923173, 590226200, 526183672, 176005584,
809584977, 222348292, 260397896, 396327746, 178971085, 774808076, 78650222,
507195902, 144802453, 299847298, 581537053, 724817078, 350425193, 503589319,
654904119, 595937600, 992781673, 82554146, 868891604, 769490422, 119334199,
287573489, 85347169, 118147346, 949694675, 540939467, 927324362, 545027201,
610310429, 769058023, 21423, 262519735, 786795808, 240407039, 428554518,
447092428, 788617633, 367724192, 374279457, 343082569, 856162651, 150954733,
962857235, 700751807, 895999415, 533537747, 537990547, 268357366, 869434038,
633081543, 603452058, 947934680, 987367826, 743179254, 710352935, 835787228,
706586787, 845202323, 238777269, 405136472, 480736674, 155194042, 871452828,
677921910, 616952227, 984554304, 602482844, 894952109, 161534829, 782737895,
850072208, 670793244, 828100052, 222399146, 284700626, 231919567, 306545173,
673216888, 772842480, 314744315, 347738200, 25002680, 730048408, 649455506,
745857274, 196252843, 529935260, 419302767, 276709210, 732855171, 343508231,
624945362, 861002432, 484757974, 367927715, 209929226, 661865936, 531107025,
413469524, 479519565, 741904536, 610072165, 606639245, 934344602, 716197790,
587584177, 185414563, 306822687, 841034662, 971868532, 919896238, 158358640,
773475266, 936203252, 665923149, 911486615, 197651366, 774528535, 82937079,
883806524, 130206852, 774201811, 995994000, 245370199, 842572718, 793423605,
740588350, 687616120, 657690139, 857790226, 37323118, 88399209, 523321086,
117621631, 71036645, 222192424, 788926021, 202125596, 1, 26,
375, 3896, 32342, 226580, 1385350, 7560544, 37426495,
170077814, 716127109, 814596482, 388283574, 187079164, 480126707, 290089727,
38629756, 54115650, 64891257, 901599546, 718222041, 911275669, 323565019,
817912019, 805459451, 803612364, 201797073, 732830955, 80380678, 23464457,
701195891, 272214917, 913862649, 132026200, 669751010, 759341231, 973676755,
794065196, 967438659, 308299894, 10712690, 949669597, 781686555, 88559004,
727530543, 318751597, 278470531, 434911202, 804701133, 324324750, 981099143,
232682614, 987104568, 776649739, 786487389, 442468777, 569068005, 663709268,
881510700, 203686642, 57967683, 568729400, 236001193, 623959074, 703861418,
908672716, 70204475, 867825588, 827103298, 241630317, 362696969, 415618616,
805038660, 598704556, 10082872, 643477587, 415164213, 703084166, 477367476,
20036406, 629980785, 802614294, 952521645, 17601466, 311433959, 830294700,
548394039, 535645146, 521413012, 929141249, 283365227, 727229980, 443388093,
410708269, 286618040, 319768543, 938841603, 93475597, 394693465, 931196821,
495806189, 902879580, 707905623, 303901454, 576396872, 484544924, 486011674,
564305854, 311518869, 856442237, 372745088, 366968335, 813470622, 720542245,
551543931, 596748971, 778551123, 354920979, 984250497, 691689872, 327423759,
52302396, 920309409, 457393341, 162758194, 401889329, 760192486, 361045291,
58998809, 845800809, 8575285, 649668894, 501939170, 542308042, 574502757,
192463535, 690505425, 204738512, 689813836, 483570629, 525148782, 216925832,
952334594, 68584858, 946061868, 229986068, 113082103, 705545851, 563504064,
430610853, 209937938, 608555345, 578039088, 750439353, 944169681, 417934823,
74422181, 960090808, 568355902, 435674968, 894299009, 15861008, 618713868,
509911155, 168869978, 339481775, 369451744, 600513141, 71634326, 781507214,
857107917, 106564183, 736233715, 362800524, 615467708, 519437498, 342065337,
206666492, 505918934, 308299385, 20927738, 106279730, 457391057, 1,
27, 403, 4325, 37042, 267514, 1685106, 9470830,
48268511, 225792189, 978561725, 958557158, 38052071, 919433401, 254995547,
546697380, 704487939, 32839999, 508901654, 551556389, 663564198, 695178769,
814009554, 547143595, 371559020, 945387943, 670094820, 616330760, 976064124,
607380120, 8699769, 998280938, 580008436, 958036252, 912203574, 544195790,
396609897, 954428754, 708902921, 801338681, 431017191, 381717232, 344144422,
131861617, 874277396, 830300192, 596462835, 318671397, 244894238, 904557382,
834593756, 283869037, 697514761, 969250693, 509524190, 913260759, 384371901,
692021356, 509945770, 32685910, 505430483, 907189201, 193340383, 693205397,
603006308, 305262013, 925218957, 968092842, 27052064, 47727228, 477199307,
293774777, 98292616, 663047137, 995897620, 288543890, 998081856, 524487172,
892499155, 556044593, 972323813, 578208602, 933674462, 509188659, 985492681,
986901126, 628028841, 519717277, 311965185, 897395442, 829761538, 9680527,
161715155, 343759581, 402616197, 861303980, 911400557, 358697993, 515548395,
553147014, 892738525, 205604013, 762111690, 442223169, 7841804, 517369986,
84729818, 152655938, 700957258, 898706126, 75157861, 271201265, 543855670,
440588279, 204308612, 236683234, 208667572, 404506592, 809547310, 853106482,
518815458, 16491026, 491832633, 360120645, 923872102, 602086347, 641452842,
18221609, 229080666, 428455406, 569262655, 856993308, 230900297, 490066099,
367669571, 96292417, 52365382, 469261002, 374633464, 900617667, 182287939,
49700390, 796588976, 949085023, 222503562, 658471212, 94278399, 66098044,
72459139, 603916441, 257635815, 234793049, 951525459, 549173423, 938321308,
13662267, 288258509, 65326301, 11071916, 364716823, 929353581, 839483911,
199241395, 29486252, 482468148, 829994735, 370892643, 687560607, 531658704,
568187724, 486108828, 475403750, 227529481, 124500798, 228110006, 56292488,
958873404, 963718586, 481659835, 183136868, 593123751, 622015148, 469053734,
211587807, 928091671, 481375722, 612130911, 134707706, 334981252, 784422204,
712253942, 698883770, 390222722, 25478322, 28778175, 349558455, 616616543,
1, 28, 432, 4784, 42229, 314064, 2036108,
11772944, 61710789, 296841956, 322742117, 501368237, 486564198, 208215103,
787564548, 236938424, 301578523, 866593178, 461034739, 153403692, 741061604,
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899399938, 781528108, 656359733, 551706967, 845829828, 900357325, 1,
31, 525, 6351, 61037, 493071, 3466221, 21705119,
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558277910, 169666679, 941915597, 277380477, 270070849, 652088255, 549544085,
1, 34, 627, 8224, 85440, 744480, 5635892,
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279951259, 412871815, 881913054, 268261177, 575207129, 196951994, 610045829,
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622554727, 966234587, 1715755, 884432882, 186517679, 414057470, 559202957,
356291776, 440462056, 76496043, 54502936, 82793754, 693820485, 333532789,
139408482, 538301356, 908601203, 663844984, 277481039, 494620179, 126148065,
101563902, 543304970, 40138848, 255494176, 250466774, 181548534, 183041503,
553027506, 468172977, 571880068, 685135214, 70030015, 431414252, 965377675,
285528459, 577690235, 3039911, 424468115, 149219671, 315258608, 442938842,
340124780, 620577523, 697442435, 606981307, 195766252, 513624332, 160814831,
144529981, 626344971, 929525101, 167384034, 985564306, 757660450, 674490248,
404160553, 218780132, 253152109, 588527766, 276135385, 293545669, 229980166,
406532593, 544661736, 944987368, 74067610, 979465423, 367319108, 691015763,
308068787, 270297211, 892899529, 571121326, 682341094, 508186314, 992592910,
570463576, 551864557, 443417375, 102996223, 180706669, 66278518, 547390018,
97982020, 377733797, 642211092, 809569594, 442856622, 912786312, 563198351,
549331531, 576357131, 891027263, 77805689, 816522985, 731749256, 313952972,
411776160, 795006290, 22615421, 348238413, 716260746, 223962550, 78670864,
47765882, 267128253, 587371111, 927656165, 192469863, 806624234, 136996971,
759497678, 646978177, 833527505, 472805550, 754214240, 960030895, 232746388,
490616131, 420542303, 904038549, 210637836, 74285318, 144447351, 742135765,
244372617, 87595635, 852731251, 594678505, 794681848, 228154101, 363702627,
673985808, 239196945, 836249623, 602064792, 462168907, 430511049, 331217937,
84426505, 529390112, 953694258, 768941491, 296949641, 617567965, 759210871,
554347066, 314959464, 855978152, 459336095, 416019714, 554419893, 643616814,
307318600, 193723511, 342506504, 737708842, 961578294, 644413804, 283651295,
449519877, 262823100, 438065978, 195660179, 15479674, 929627357, 712657286,
867475048, 618979059, 615899609, 290553872, 46585860, 675146342, 899293157,
138576244, 932939832, 413352510, 228638502, 577046541, 52412367, 271101119,
704058715, 716195674, 113738084, 976781966, 417637854, 201849275, 137988263,
703452509, 833173534, 774723430, 98520292, 647910333, 702073064, 101667724,
93613248, 4773372, 993672667, 598539625, 298728331, 547262186, 609550837,
42278975, 203431476, 764589375, 791435299, 273439277, 15186943, 247517820,
332116413, 672582410, 88991345, 573172714, 370502342, 495515460, 486357723,
529038430, 112617630, 9655079, 54905538, 630913486, 94540925, 694069860,
101033114, 601510215, 405093272, 877399916, 606786230, 712700446, 365826653,
440611748, 222502187, 628732942, 260127071, 415183336, 331627148, 603111841,
484627861, 252203062, 603610758, 918118836, 775502591, 558836403, 458735214,
903545723, 229008632, 239177179, 70767308, 751925156, 652119146, 980361868,
450630793, 63075950, 714904102, 795480239, 196855664, 446357279, 343343138,
751184330, 353543327, 265335039, 291055365, 141693974, 952501609, 772988967,
982806649, 295006336, 142133453, 389243658, 551050114, 837354729, 288032982,
926886748, 940810321, 996269340, 544323652, 123254721, 449847916, 164321665,
408440169, 540527971, 235735087, 384560805, 888470688, 711171300, 414716347,
219479361, 559050803, 610845133, 321258507, 296543705, 253557800, 771631909,
466270561, 966519146, 100544233, 474799959, 147649345, 956135303, 808272257,
279282920, 472357219, 422709994, 530025514, 999788009, 64593897, 709199531,
479060735, 311654131, 943520011, 427742758, 799287390, 782392773, 191335024,
830990096, 336010037, 237942831, 237453992, 695887098, 398366572, 529644737,
344086296, 862051533, 684436865, 317549101, 968659087, 366641438, 1,
49, 1272, 23124, 329180, 3895908, 39783804, 359447204,
925733384, 746545659, 165655001, 158091124, 719304162, 111160209, 171158550,
935012406, 874008903, 988755604, 608336289, 351327718, 211049418, 970686245,
441380023, 920727544, 396494781, 218114186, 934368772, 753990221, 203263446,
488226646, 946324350, 642441651, 816607227, 122420091, 629716118, 498106515,
488881569, 100763230, 814241373, 430998026, 986590664, 188596813, 238499794,
887765759, 719310391, 819612870, 840885905, 584773429, 811468143, 396065785,
368868801, 299761844, 617462619, 308704442, 206242421, 833439007, 106715469,
970135543, 972244832, 66232618, 207050932, 577078708, 955731123, 103929249,
632790957, 297717977, 280927805, 856143814, 140717794, 889342899, 570959166,
553036683, 311778062, 833874032, 321035571, 629235909, 60666525, 19636232,
889773198, 837811568, 283828621, 499062871, 459250525, 468391935, 389843786,
80632526, 462481073, 859711240, 66143264, 831825780, 518914304, 998480225,
496960804, 480385724, 483317701, 923742113, 771054094, 630267330, 478946945,
527928962, 674723787, 882998613, 123711144, 324674723, 964132061, 961988031,
65215295, 858250635, 924300325, 577545014, 241841560, 172586320, 726876085,
210684082, 897202470, 742850020, 161301259, 120853804, 344539574, 836860211,
667275920, 72688787, 930704832, 179668299, 861726583, 168665810, 834696469,
672920894, 419563732, 302874180, 454615268, 934181182, 119694911, 779976833,
216225187, 244379028, 586838513, 942544272, 397970796, 155525782, 435250288,
609294947, 697035870, 790138207, 313089121, 451259481, 904475234, 15500998,
428233316, 352796372, 805867626, 355791012, 191743365, 390372515, 86113794,
224579645, 34292553, 472538607, 244805809, 799547326, 350596592, 550928379,
248605526, 858957317, 809083222, 418025439, 717379009, 843111164, 748566980,
795763411, 344249103, 246799165, 468081584, 533360568, 97839725, 814208152,
370784820, 149643652, 648814350, 586462723, 179226570, 323415874, 413399345,
830824722, 901264775, 785155020, 673315179, 883230707, 320461657, 209574161,
896187167, 641537195, 580708044, 615201169, 907420567, 226969633, 44823693,
653925850, 618905940, 556249274, 683808190, 595045606, 406684866, 817926872,
498013040, 741888764, 255307898, 750076370, 226664326, 45791371, 138249186,
182084615, 925519009, 32002450, 507648904, 36302093, 164244320, 134446595,
176304234, 443232913, 204696272, 377207389, 330407781, 317016375, 255990328,
346121343, 776903928, 865285835, 180645765, 94169320, 523805568, 66571932,
958229276, 706032441, 157122799, 174128102, 265560802, 960871567, 814597354,
840895548, 702037, 848074074, 17426708, 276377856, 55696613, 206160180,
32721003, 453495162, 587538197, 204676036, 610254246, 936113705, 842825687,
202272844, 145230437, 624393323, 739106533, 700708897, 523328161, 691038973,
656087189, 213848962, 927815456, 921255504, 609475698, 113463094, 529085932,
807792149, 579407091, 163833313, 694176222, 471399591, 346973697, 718259544,
297359882, 892552532, 451373341, 120883534, 8029910, 624607649, 606649877,
815313728, 231664869, 673443919, 615486405, 94571095, 110823650, 950289120,
646876432, 928906934, 684469503, 297251947, 919054473, 285157267, 967739040,
274416446, 465229888, 656873003, 825576691, 53305194, 539107135, 609069516,
669008004, 585520763, 526072937, 91836656, 101778461, 538228891, 424599066,
719851020, 234795290, 701214554, 914481398, 497763115, 504286064, 212679726,
409710596, 134500525, 154608785, 554889670, 267547678, 851784437, 749366191,
681515762, 587313005, 604179607, 297539881, 51380469, 30897443, 988568867,
430543091, 168358864, 325894509, 131217074, 122226126, 289735266, 2541560,
697428098, 339809826, 339814711, 568813016, 256466301, 865405619, 710940331,
7424767, 660900037, 729644940, 444, 450105203, 690939247, 459755659,
92556107, 42398758, 782901298, 483436309, 73995240, 784415989, 602791285,
655683750, 744368335, 684929720, 939318197, 1937536, 94209990, 544006669,
195169186, 297173575, 151918090, 559870646, 425964491, 818978660, 571568643,
60393204, 415731654, 547756555, 991386612, 383053326, 997830526, 963081859,
107336308, 898219937, 906988404, 550036125, 981857264, 691293427, 481189647,
501756531, 316529056, 476096058, 168221459, 165690115, 553028411, 960794528,
453386272, 963889156, 71983103, 494867184, 462967097, 635240847, 989817132,
23786457, 968645733, 163475174, 884798755, 971346358, 8231228, 947835970,
751371876, 21594745, 702982989, 997528759, 30899466, 874470660, 839706683,
64336797, 183002010, 415355406, 851375333, 802315034, 662347966, 459017349,
83113197, 807783874, 686211775, 665742332, 548408223, 38712773, 947065654,
224142524, 544199777, 554457822, 161813447, 59932464, 324817969, 826816639,
159675767, 610260222, 802832692, 962264291, 230527850, 654881259, 493134625,
56109407, 491401533, 163680598, 892934948, 889185132, 78662275, 741528574,
616484511, 204394884, 120980232, 4959172, 884202370, 468625389, 987185268,
797914336, 292935354, 542176515, 965256954, 25044127, 701524209, 669825969,
264620823, 983915826, 463815578, 325409981, 142164710, 946513145, 626025918,
890502327, 456729879, 921471703, 889764153, 10834930, 550258959, 888111963,
456661896, 560525119, 254574198, 379302005, 359197537, 748972811, 432885247,
174603143, 495215302, 304225805, 499574, 89067439, 956588800, 479903186,
900293862, 918419160, 874312513, 779518268, 750190343, 34999197, 204187488,
29703716, 310295240, 212734818, 705461990, 880565621, 542764103, 578132976,
871657196, 920555643, 635330221, 603836039, 905337022, 446003049, 531829391,
914627500, 109964459, 793773872, 883594493, 588890899, 761763418, 850946563,
47045637, 406265955, 398330580, 175033998, 98562597, 74022406, 109783010,
888406279, 62923507, 851720727, 920064661, 659715101, 731241623, 740764931,
68490942, 26861674, 832409630, 156628069, 65837301, 277330611, 504531610,
621094682, 513712789, 824543274, 863846088, 522929299, 50674845, 205053841,
391074024, 703020653, 598865065, 977680558, 126857946, 571772915, 596794646,
195429545, 328266420, 36051456, 451216030, 522276964, 948367998, 561406981,
389510759, 585943971, 108053297, 459413669, 288907310, 136029766, 802792879,
520247265, 414339912, 337619243, 597859489, 40005835, 350918, 321070418,
199829979, 141119131, 515535428, 350920730, 314377413, 808898947, 900198037,
799762368, 570476717, 244997759, 402733111, 626061442, 103647198, 938528989,
898060580, 652361018, 641847472, 149112119, 134262079, 887185896, 606038263,
859408453, 950373236, 692335861, 405660442, 565431386, 959094106, 393940636,
423632434, 612413824, 143336067, 663257107, 9730523, 471491852, 112828340,
936303905, 998673093, 55233966, 416039620, 144081002, 565258672, 539355694,
202448366, 14002378, 539019751, 307827209, 288622328, 788194350, 570120788,
965430343, 472467292};
int main() {
while (cin >> n >> k) {
if (k % 2 == 1 || k > n * n / 2) {
cout << 0 << endl;
} else {
int x = 0;
// rep(N, 60) {
for (int N = 1; N < 60; ++N) {
for (int K = 0; K <= N * N / 2; K += 2) {
if (N == n && K == k) {
N = 100;
break;
}
++x;
}
}
// cout << x << endl;
cout << dat[x] << endl;
}
}
rep(n, 20) {
// reP(k, n*n / 2) {
for (int k = 0; k <= n * n / 2; k += 2) {
int N = n;
int K = k;
ll s = solve(N, K);
// cout << "" << s << endl;
printf("[%d, %d]: %lld\n", N, K, s);
}
}
while (cin >> n >> k) {
int N = n;
int K = k;
ll s = solve(N, K);
// cout << "" << s << endl;
printf("[%d, %d]: %lld\n", N, K, s);
}
while (cin >> n >> k) {
int N = n;
int K = k;
k /= 2;
FILL1(memo);
ll d = dfs(1, k);
cout << "# " << d << endl;
ll s = solve(N, K);
cout << "$ " << s << endl;
}
}
/*
1 2 3 4
1 2 4 3 2 (+2)
1 4 2 3 4 (+2)
4 1 2 3 6 (+2)
/////
1 2 3 ... 48 49 50
50 49 48 ... 3 2 1
49 47 45
Sum : 1250
*/
/*
# -*- coding: utf-8 -*-
# 整数の入力
while 1:
b, c = map(int, input().split())
# 出力
print("{}".format(c%1000000007))
*/ | #define _USE_MATH_DEFINES
#define _SILENCE_CXX17_C_HEADER_DEPRECATION_WARNING
#define _SILENCE_ALL_CXX17_DEPRECATION_WARNINGS
#define _CRT_SECURE_NO_WARNINGS
#include <bits/stdc++.h>
#include <immintrin.h>
#include <mmintrin.h>
#include <nmmintrin.h>
using namespace std;
#define dprint(Exp, ...) \
if (Exp) { \
fprintf(stderr, __VA_ARGS__); \
}
#define printe(...) fprintf(stderr, __VA_ARGS__);
#define PrtExp(_Exp) cerr << #_Exp << " = " << (_Exp)
#define PrtExpN(_Exp) cerr << #_Exp << " = " << (_Exp) << "\n"
#define SINT(n) scanf("%d", &n)
#define SINT2(n, m) scanf("%d %d", &n, &m)
#define SINT3(n, m, o) scanf("%d %d %d", &n, &m, &o)
#define SINT4(n, m, o, P) scanf("%d %d %d %d", &n, &m, &o, &P)
#define SINT5(n, m, o, P, q) scanf("%d %d %d %d %d", &n, &m, &o, &P, &q)
#define SLL(n) scanf("%lld", &n)
#define SLL2(n, m) scanf("%lld %lld", &n, &m)
#define SLL3(n, m, o) scanf("%lld %lld %lld", &n, &m, &o)
#define SST(s) scanf("%s", s)
#define SCH(c) scanf("%c", &c)
#define GC() getchar()
#define PINT(n) printf("%d", (int)(n))
#define PINT2(n, m) printf("%d %d", (int)(n), (int)(m))
#define PINT3(n, m, l) printf("%d %d %d", (int)(n), (int)(m), (int)(l))
#define PLL(n) printf("%lld", (long long)(n))
#define PST(s) printf("%s", (s))
#define PCH(s) printf("%c", (s))
#define PINTN(n) printf("%d\n", (int)(n))
#define PINT2N(n, m) printf("%d %d\n", (int)(n), (int)(m))
#define PINT3N(n, m, l) printf("%d %d %d\n", (int)(n), (int)(m), (int)(l))
#define PLLN(n) printf("%lld\n", (long long)(n))
#define PSTN(s) printf("%s\n", (s))
#define PCHN(s) printf("%c\n", (s))
#define PSP() printf(" ")
#define PN() printf("\n")
#define PC(c) putchar(c)
#define CSP (' ')
#define SN ("\n")
#define rep(i, a) for (int i = 0; i < a; i++)
#define reP(i, a) for (int i = 0; i <= a; i++)
#define Rep(i, a) for (int i = a - 1; i >= 0; i--)
#define ReP(i, a) for (int i = a; i >= 0; i--)
#define rEp(i, a) for (i = 0; i < a; i++)
#define rEP(i, a) for (i = 0; i <= a; i++)
#define REp(i, a) for (i = a - 1; i >= 0; i--)
#define REP(i, a) for (i = a; i >= 0; i--)
#define repft(i, a, b) for (int i = a; i < b; i++)
#define repfT(i, a, b) for (int i = a; i <= b; i++)
#define Repft(i, a, b) for (int i = a - 1; i >= b; i--)
#define RepfT(i, a, b) for (int i = a; i >= b; i--)
#define foreach(a, it) for (auto it = a.begin(); it != a.end(); ++it)
#define FILL(a, v) fill(begin(a), end(a), v)
#define FILL0(a) memset(a, 0, sizeof(a))
#define FILL1(a) memset(a, -1, sizeof(a))
typedef long long ll;
typedef unsigned long long ull;
typedef pair<int, int> Pi;
typedef pair<ll, ll> Pll;
const int INF = 1'010'000'000; // 0x3C33'6080
const ll INFLL = 0x1f1f1f1f1f1f1f1fLL; // 2,242,545,357,980,376,863
template <class A, class B>
inline ostream &operator<<(ostream &st, const pair<A, B> &P) {
return st << "(" << P.first << "," << P.second << ")";
};
template <class A, class B>
inline pair<A, B> operator+(const pair<A, B> &P, const pair<A, B> &Q) {
return pair<A, B>(P.first + Q.first, P.second + Q.second);
};
template <class A, class B>
inline pair<A, B> operator-(const pair<A, B> &P, const pair<A, B> &Q) {
return pair<A, B>(P.first - Q.first, P.second - Q.second);
};
#define fs first
#define sc second
const ll M = 1000000007;
int solve(int n, int k) {
int a[50];
rep(i, n) a[i] = i;
int ret = 0;
do {
int b = 0;
rep(i, n) { b += abs(a[i] - i); }
if (b == k) {
// cout << "| "; rep(i, n) cout << a[i] + 1 << " "; cout << endl;
if (++ret >= M)
ret = 0;
}
} while (next_permutation(a, a + n));
return ret;
}
int n, k;
ll memo[64][4096];
ll dfs(int i, int r) {
if (r == 0)
return 1;
if (i == n) {
/*
if (r <= n) return 1;
return 0;
*/
return 0;
}
if (memo[i][r] >= 0)
return memo[i][r];
ll ret = 0;
reP(w, n - i + 1) {
if (r < w)
break;
ret += dfs(i + 1, r - w);
ret %= M;
}
printf("dsf(%d, %d) : %lld\n", i, r, ret);
return memo[i][r] = ret;
}
/*
1;
1, 1;
1, 2, 3;
1, 3, 7, 9, 4;
1, 4, 12, 24, 35, 24, 20
*/
int dat[] = {
1, 1, 1, 1, 2, 3, 1,
3, 7, 9, 4, 1, 4, 12,
24, 35, 24, 20, 1, 5, 18,
46, 93, 137, 148, 136, 100, 36,
1, 6, 25, 76, 187, 366, 591,
744, 884, 832, 716, 360, 252, 1,
7, 33, 115, 327, 765, 1523, 2553,
3696, 4852, 5708, 5892, 5452, 4212, 2844,
1764, 576, 1, 8, 42, 164, 524,
1400, 3226, 6436, 11323, 17640, 25472, 33280,
40520, 44240, 45512, 40608, 35496, 25632, 18108,
8064, 5184, 1, 9, 52, 224, 790,
2350, 6072, 13768, 27821, 50461, 83420, 127840,
182256, 242272, 301648, 350864, 382576, 389232, 373536,
332640, 273060, 208548, 136512, 81792, 46656, 14400,
1, 10, 63, 296, 1138, 3708, 10538,
26480, 59673, 121626, 226787, 390144, 628744, 949472,
1355952, 1826464, 2341600, 2833632, 3282464, 3584160, 3765600,
3719664, 3531924, 3093336, 2642364, 2010240, 1508544, 963072,
621504, 259200, 158400, 1, 11, 75, 381,
1582, 5582, 17222, 47194, 116457, 261163, 537459,
1022981, 1817652, 3040352, 4810720, 7230928, 10360160, 14178912,
18577792, 23327872, 28132048, 32571504, 36310464, 38903904, 40028724,
39552156, 37457388, 33941412, 29314944, 24179904, 18835776, 13777344,
9452736, 5716800, 3211200, 1742400, 518400, 1, 12,
88, 480, 2137, 8096, 26860, 79376, 211811,
515308, 1153268, 2391936, 4633331, 8438664, 14557048, 23874176,
37407760, 56117824, 80906752, 112162240, 150052400, 193572736, 241706624,
291576384, 341323776, 386160048, 424359540, 450394992, 464545584, 461528208,
446428476, 413557632, 373573440, 321120000, 268449408, 210332160, 162330624,
112550400, 77788800, 46540800, 28497600, 11404800, 6739200, 1,
13, 102, 594, 2819, 11391, 40344, 127508,
364587, 952559, 2293742, 5126898, 10710633, 21042989, 39117852,
69175664, 116857024, 189256368, 294745440, 442503456, 641759376, 900689616,
225195321, 617201401, 74227554, 586823330, 140227131, 711888699, 274217080,
795069832, 242715461, 585116357, 796764497, 861974465, 769155485, 525176285,
146566301, 650715556, 73773796, 455145195, 828946802, 226153586, 685663993,
216281593, 828705600, 536385600, 309484800, 166924800, 87609600, 25401600,
1, 14, 117, 724, 3645, 15626, 58741,
197280, 600215, 1671266, 4295107, 10259436, 22922995, 48184950,
95816051, 181136304, 327071752, 566117888, 942525072, 513281017, 349163810,
532145419, 154557773, 309226767, 88509354, 563257605, 789064441, 766807654,
474675580, 795689314, 599134613, 627066840, 658988947, 307608398, 337632800,
295701193, 44870369, 150212311, 705302359, 336038622, 452522163, 797367958,
62674553, 57993322, 777736994, 845298906, 452367755, 90655804, 810196653,
976943895, 564798323, 582118351, 994783972, 869862386, 697759993, 660441600,
381024000, 1, 15, 133, 871, 4633, 20979,
83313, 295803, 952299, 2809009, 7656027, 19414457, 46086247,
102967901, 217634463, 437195525, 838372452, 540635289, 722168530, 638311860,
640827391, 196046908, 898688562, 478199884, 793020369, 808862771, 562236075,
94791602, 385333320, 237794527, 197694759, 398043392, 504456766, 579736664,
78137089, 793367253, 961295251, 280517488, 179779783, 947563092, 901772777,
859566930, 199212409, 920781370, 362900807, 735004334, 297264154, 482748036,
653703312, 140400674, 623159781, 320434095, 373194802, 13313867, 205909676,
360223815, 570584277, 68075848, 372652149, 961247580, 23084534, 261139053,
151302323, 715359965, 625702393, 1, 16, 150, 1036,
5802, 27648, 115538, 431844, 1464468, 4554040, 13096378,
35069940, 87969166, 207781760, 464351910, 986188668, 998611836, 879505923,
237509223, 15110629, 621334822, 88677622, 257578542, 963016850, 235638961,
442107823, 429101453, 483004748, 329733855, 718448185, 266304376, 413950543,
256286771, 626720357, 318467482, 59069608, 81901162, 352730851, 104241055,
503595237, 956355036, 534522134, 457799859, 108929893, 887297322, 424614770,
265024591, 876853471, 515703045, 692038809, 210906163, 20070317, 468291405,
145357835, 797577421, 232358134, 747771239, 343859985, 833879609, 78548665,
289896769, 449285934, 313197004, 379603290, 397630660, 609910102, 442642726,
627950853, 722186028, 705163253, 998661511, 771071664, 636940611, 1,
17, 168, 1220, 7172, 35852, 157132, 616084,
2192506, 7159090, 21631676, 60902460, 160707468, 399489140, 939796228,
101060910, 481320121, 151453550, 952463061, 931694473, 957528293, 554162053,
990142499, 644946993, 651797781, 791594351, 556120466, 271969917, 107619398,
710253075, 280526462, 615698879, 99748930, 775178221, 257586036, 645364809,
806795120, 340635512, 801741075, 790520661, 68328385, 331513794, 351728404,
931812262, 91105169, 176869824, 445724501, 370449983, 359815736, 918724628,
869062973, 659791249, 657727222, 395793733, 32692523, 78858425, 151369211,
628504487, 842750087, 152091477, 889718876, 908002421, 944598446, 656459208,
712920845, 47550280, 92244967, 110652620, 951703750, 217822851, 901098263,
655149074, 861896271, 859184013, 992613245, 768042116, 807916959, 335381553,
909568095, 153171069, 827990317, 681893483, 1, 18, 187,
1424, 8764, 45832, 210072, 861400, 3206786, 10957868,
34666130, 102239488, 282743580, 736889224, 817936097, 262532028, 534038590,
412279142, 965109380, 86702267, 846482566, 945052509, 644517943, 548776024,
679330947, 152291502, 882910517, 188127435, 636778925, 902059202, 132531208,
193904122, 893705022, 246193070, 652079051, 958060250, 148697872, 504141990,
371410212, 807466717, 514477363, 565424570, 560794838, 11419155, 215137208,
665710713, 791504234, 359367396, 224050172, 509091270, 125989128, 782600310,
957126038, 667219607, 386301613, 605448653, 296557741, 618019404, 194294675,
222923480, 765962783, 743934970, 24324611, 512643153, 214242880, 286900578,
228877964, 91240846, 430467141, 533029377, 904804693, 373207899, 916503101,
83598539, 560288494, 363356684, 68282446, 152683809, 284461190, 124425011,
167972327, 428909487, 373215034, 420008537, 513304383, 874743039, 487193257,
97337408, 532639641, 184378261, 955976093, 1, 19, 207,
1649, 10600, 57852, 276620, 1183172, 4595034, 16384606,
54107670, 166643130, 481442164, 311240781, 381378831, 288429444, 380463632,
370477330, 171662912, 688513797, 626045604, 789881798, 844990830, 70546834,
230422087, 267733218, 970080423, 75064762, 104073936, 888990608, 393490487,
819401315, 362017415, 197941501, 97730360, 491049732, 790022455, 142301163,
381999002, 81566974, 255547256, 500580164, 503785886, 874661360, 953064009,
357278689, 416715628, 656421867, 311332859, 849655408, 575613107, 850236831,
533549113, 255339339, 611845477, 501164398, 135987981, 672393680, 678611757,
552403430, 470027818, 333312311, 203812034, 929380798, 133842121, 497262544,
839881753, 29703780, 133717366, 249364505, 959337844, 632980495, 72879056,
356819838, 662140760, 182352973, 260787823, 329159184, 423643610, 488600943,
164109163, 8143787, 184454683, 684285006, 693158498, 382122550, 488552031,
777204359, 564238497, 598675373, 603916585, 720234840, 93182262, 238936257,
486420235, 352604922, 958291193, 880928218, 736558676, 163545641, 189347824,
1, 20, 228, 1896, 12703, 72200, 359348,
1599616, 6465450, 23997032, 82508708, 264654080, 796563486, 260832418,
76986106, 528774007, 854313906, 307546108, 722735109, 61004626, 805619536,
18191861, 511411798, 993782454, 401030744, 633897378, 70862649, 96855526,
314416445, 92910833, 135520920, 492052755, 24334887, 643976444, 574388511,
317610455, 122930943, 637889505, 255461238, 950861369, 48876234, 149504663,
198682481, 942670278, 866921314, 563621302, 960474580, 980132644, 624295523,
399490883, 351714973, 945626033, 827908349, 157456205, 481861323, 472454109,
343580291, 683697065, 95059407, 841332348, 464714941, 596887160, 38681949,
757883329, 590303711, 64921694, 730086270, 15240461, 714742087, 32874447,
175996750, 277466516, 788882909, 11880203, 95097385, 778398376, 531252352,
479554466, 557013590, 609738833, 798714176, 859324339, 721484640, 268442938,
861267595, 806087188, 31691029, 950412807, 580575404, 849451646, 691790951,
264837637, 967322620, 365040170, 622467624, 456436788, 658680316, 60575186,
387550026, 215002020, 31349904, 449373833, 559514745, 640364153, 807042078,
450172023, 562637973, 109112418, 545193132, 195217263, 976304283, 1,
21, 250, 2166, 15097, 89189, 461164, 2132144,
8950214, 34503182, 123236828, 410729140, 284813823, 790835929, 594736274,
153822108, 374418504, 157537842, 147846917, 133568389, 483576696, 508616649,
656867821, 84463125, 640047601, 955370715, 182167616, 49108700, 229345632,
795610484, 502493987, 857101031, 142485158, 996679960, 742503997, 723858587,
317526153, 365342533, 250775491, 442738912, 408346120, 881242865, 135363327,
231979623, 347291745, 824934645, 995772018, 164592917, 354883487, 450805745,
963969802, 171006181, 92161176, 169883419, 961669090, 26844445, 393784092,
571606470, 464707158, 34144520, 652396373, 745405475, 202923498, 135935314,
703695236, 776259115, 48310283, 874186699, 219390686, 510394758, 751965065,
418424556, 8781061, 736058807, 674014147, 674780706, 590530540, 4352977,
803825827, 167292329, 541083402, 260679638, 665083995, 939990721, 816665296,
886017767, 669822229, 694816125, 643235536, 937314556, 115942268, 261159535,
687177905, 12245758, 694615643, 977706180, 217949106, 118952653, 898868241,
856650616, 42954342, 330321980, 535121720, 982503521, 719423135, 714354007,
18745970, 333448882, 302037622, 935654015, 778423936, 317991952, 284756555,
504736970, 155871365, 118263505, 797065125, 640838446, 258037348, 34344762,
502389803, 911086550, 1, 22, 273, 2460, 17807,
109158, 585339, 2805752, 12209406, 48792492, 180680070, 624410736,
25734764, 199973794, 977710523, 571365953, 412869707, 328237414, 214863466,
633048751, 257394955, 317735309, 673309005, 193600985, 704135816, 514918834,
650479735, 33606857, 490034801, 698396427, 67986999, 220797055, 218864611,
931163713, 940790978, 675674698, 85542051, 543018292, 61247584, 910803604,
831296179, 923943160, 89478028, 104500393, 161998091, 254912705, 539249258,
547749719, 357852173, 690014841, 206926249, 893887199, 747112232, 382059625,
148865046, 301618706, 260333115, 442306036, 247371284, 782005651, 233300621,
920894203, 317455792, 678639547, 427050277, 482884001, 854060466, 980543322,
860769666, 701293636, 771136168, 670745480, 486701027, 168461356, 848787800,
289825171, 498776317, 33320170, 430165721, 821516580, 115533370, 398776967,
333310602, 563097053, 553134182, 219816464, 216637272, 206027601, 933677337,
925510467, 267639197, 43693887, 486722546, 270929495, 877730912, 261947307,
375318068, 692508932, 989184491, 226696206, 288508969, 739837562, 849035543,
782296408, 273955665, 801085382, 431898190, 935043965, 202752072, 867866169,
151133676, 67940990, 78118516, 742654574, 165553271, 254022475, 668960857,
929973305, 656759571, 877339826, 925206924, 133648890, 623964326, 796176354,
256442424, 844384225, 955053908, 35821657, 33969824, 328610099, 171474448,
265634834, 954990510, 1, 23, 297, 2779, 20859,
132473, 735535, 3649437, 16435370, 67971642, 260491974, 931772466,
129241853, 915880695, 773220207, 21124907, 663657824, 89235883, 562087424,
395633225, 79602143, 818737728, 503346111, 923762587, 810187543, 71950684,
872552891, 722894374, 788701216, 792043650, 839896539, 577542972, 345484502,
350106805, 159630680, 594479078, 806985602, 451202244, 562057157, 345406448,
404888318, 371479292, 122121086, 196184273, 855722413, 625056343, 209132008,
580725504, 234791519, 683270249, 879431955, 820639155, 890517789, 877206124,
780147370, 943542736, 532169988, 134361777, 389279830, 486085405, 212150153,
60309713, 36144061, 220641769, 167907687, 433032241, 672669299, 4840381,
543970499, 860603358, 920463673, 899153827, 269139419, 99866794, 833550296,
732963165, 649634036, 220976898, 948879986, 81746947, 249278044, 943429751,
227240067, 617290217, 857759442, 317672542, 702411387, 392102340, 598392406,
771484657, 20769431, 772211314, 777981688, 103043307, 336611982, 922346108,
46010568, 620920750, 740298345, 143296430, 127113300, 229361025, 452883985,
298773134, 583669967, 430943791, 878469881, 498554889, 377075156, 399618101,
518539100, 610655946, 762624102, 339746521, 193491143, 582788075, 58498274,
139175929, 439487543, 659039143, 969039085, 205473123, 149794944, 735361805,
144310487, 952281582, 885994682, 290034640, 449859219, 870975475, 717604104,
930837761, 466542500, 510501275, 368063612, 61813298, 959329905, 938922014,
660077190, 12025968, 335011033, 657136343, 351072920, 964781583, 196462283,
1, 24, 322, 3124, 24280, 159528, 915834,
4696644, 21857553, 93405656, 369882084, 367190881, 745178532, 541448535,
237690972, 408537702, 191376116, 678513161, 493570976, 397907192, 9101765,
658714208, 122356973, 514532531, 911169029, 6916896, 782796, 910119724,
942560918, 62371227, 773940129, 523667340, 669757203, 42568262, 891666384,
467022993, 486796667, 727294526, 413613585, 787453753, 599953158, 417187968,
359849625, 117069116, 879478181, 12380000, 910899870, 838986319, 102687453,
103327364, 376800830, 429223538, 780159138, 706916356, 587575355, 971169352,
36010810, 483798044, 344462034, 787276711, 359714668, 737585540, 514856433,
506547585, 7966248, 935961, 931790046, 725219981, 437246235, 737823353,
539625329, 101294921, 998345360, 158678756, 14552916, 434899855, 58679632,
771567929, 908041362, 370603042, 958461645, 473954165, 329932246, 645017860,
950250115, 632956030, 39737256, 308287817, 593859369, 848980890, 73354610,
67983312, 794665532, 744501399, 571146358, 79777328, 768540650, 301591668,
87146707, 749547055, 542914952, 113807115, 981646049, 443442346, 689844336,
226785366, 664441023, 644644459, 65534356, 186334852, 433121661, 818953887,
687026114, 344822747, 464015963, 110899493, 294091084, 65199948, 37449794,
719226153, 501099656, 413337315, 725255533, 799293560, 259962068, 954615054,
373654234, 764439094, 914044890, 22085466, 539035590, 698634111, 313016212,
98993468, 941478268, 955683335, 902077766, 420565422, 767959775, 128648986,
355285226, 534029655, 104714136, 932643222, 778200211, 56428536, 225880543,
792355687, 449940761, 181471652, 529937629, 325235521, 6575392, 94094707,
441392085, 37264955, 911557047, 1, 25, 348, 3496,
28098, 190746, 1130768, 5985744, 28747851, 126764795, 517958180,
975500521, 75313899, 914923483, 611051644, 458281681, 932346365, 712529240,
185024083, 463834094, 950836649, 286357381, 871292163, 434939852, 58330077,
629835295, 27932676, 66354549, 10923173, 590226200, 526183672, 176005584,
809584977, 222348292, 260397896, 396327746, 178971085, 774808076, 78650222,
507195902, 144802453, 299847298, 581537053, 724817078, 350425193, 503589319,
654904119, 595937600, 992781673, 82554146, 868891604, 769490422, 119334199,
287573489, 85347169, 118147346, 949694675, 540939467, 927324362, 545027201,
610310429, 769058023, 21423, 262519735, 786795808, 240407039, 428554518,
447092428, 788617633, 367724192, 374279457, 343082569, 856162651, 150954733,
962857235, 700751807, 895999415, 533537747, 537990547, 268357366, 869434038,
633081543, 603452058, 947934680, 987367826, 743179254, 710352935, 835787228,
706586787, 845202323, 238777269, 405136472, 480736674, 155194042, 871452828,
677921910, 616952227, 984554304, 602482844, 894952109, 161534829, 782737895,
850072208, 670793244, 828100052, 222399146, 284700626, 231919567, 306545173,
673216888, 772842480, 314744315, 347738200, 25002680, 730048408, 649455506,
745857274, 196252843, 529935260, 419302767, 276709210, 732855171, 343508231,
624945362, 861002432, 484757974, 367927715, 209929226, 661865936, 531107025,
413469524, 479519565, 741904536, 610072165, 606639245, 934344602, 716197790,
587584177, 185414563, 306822687, 841034662, 971868532, 919896238, 158358640,
773475266, 936203252, 665923149, 911486615, 197651366, 774528535, 82937079,
883806524, 130206852, 774201811, 995994000, 245370199, 842572718, 793423605,
740588350, 687616120, 657690139, 857790226, 37323118, 88399209, 523321086,
117621631, 71036645, 222192424, 788926021, 202125596, 1, 26,
375, 3896, 32342, 226580, 1385350, 7560544, 37426495,
170077814, 716127109, 814596482, 388283574, 187079164, 480126707, 290089727,
38629756, 54115650, 64891257, 901599546, 718222041, 911275669, 323565019,
817912019, 805459451, 803612364, 201797073, 732830955, 80380678, 23464457,
701195891, 272214917, 913862649, 132026200, 669751010, 759341231, 973676755,
794065196, 967438659, 308299894, 10712690, 949669597, 781686555, 88559004,
727530543, 318751597, 278470531, 434911202, 804701133, 324324750, 981099143,
232682614, 987104568, 776649739, 786487389, 442468777, 569068005, 663709268,
881510700, 203686642, 57967683, 568729400, 236001193, 623959074, 703861418,
908672716, 70204475, 867825588, 827103298, 241630317, 362696969, 415618616,
805038660, 598704556, 10082872, 643477587, 415164213, 703084166, 477367476,
20036406, 629980785, 802614294, 952521645, 17601466, 311433959, 830294700,
548394039, 535645146, 521413012, 929141249, 283365227, 727229980, 443388093,
410708269, 286618040, 319768543, 938841603, 93475597, 394693465, 931196821,
495806189, 902879580, 707905623, 303901454, 576396872, 484544924, 486011674,
564305854, 311518869, 856442237, 372745088, 366968335, 813470622, 720542245,
551543931, 596748971, 778551123, 354920979, 984250497, 691689872, 327423759,
52302396, 920309409, 457393341, 162758194, 401889329, 760192486, 361045291,
58998809, 845800809, 8575285, 649668894, 501939170, 542308042, 574502757,
192463535, 690505425, 204738512, 689813836, 483570629, 525148782, 216925832,
952334594, 68584858, 946061868, 229986068, 113082103, 705545851, 563504064,
430610853, 209937938, 608555345, 578039088, 750439353, 944169681, 417934823,
74422181, 960090808, 568355902, 435674968, 894299009, 15861008, 618713868,
509911155, 168869978, 339481775, 369451744, 600513141, 71634326, 781507214,
857107917, 106564183, 736233715, 362800524, 615467708, 519437498, 342065337,
206666492, 505918934, 308299385, 20927738, 106279730, 457391057, 1,
27, 403, 4325, 37042, 267514, 1685106, 9470830,
48268511, 225792189, 978561725, 958557158, 38052071, 919433401, 254995547,
546697380, 704487939, 32839999, 508901654, 551556389, 663564198, 695178769,
814009554, 547143595, 371559020, 945387943, 670094820, 616330760, 976064124,
607380120, 8699769, 998280938, 580008436, 958036252, 912203574, 544195790,
396609897, 954428754, 708902921, 801338681, 431017191, 381717232, 344144422,
131861617, 874277396, 830300192, 596462835, 318671397, 244894238, 904557382,
834593756, 283869037, 697514761, 969250693, 509524190, 913260759, 384371901,
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1, 38, 777, 11244, 128419, 1226846, 10161959,
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711611694, 275529831, 657391663, 618370464, 182199238, 863262145, 671572410,
926093081, 964697471, 20599847, 886336884, 976845790, 332330830, 936899217,
469444206, 333826539, 382006323, 404644652, 86283892, 711449573, 711524895,
240243757, 137744674, 52585102, 502954368, 568353873, 424768720, 673699213,
453807002, 277591996, 614231800, 858886730, 933633627, 855960053, 795294602,
320736325, 160050137, 741837408, 875372187, 933116510, 439299086, 339530899,
998809886, 988163112, 414204450, 626581582, 425958595, 547450689, 257877182,
25212376, 487090639, 693248108, 736165691, 261048117, 530252319, 667332870,
224234420, 283256778, 493030047, 381167115, 959191937, 567700201, 408470930,
456733167, 877572444, 640070139, 177231251, 53889209, 630925282, 764167042,
903138510, 822950867, 161878067, 741376139, 620673064, 828400388, 989198090,
398235498, 335164252, 650259410, 895482301, 288920533, 986020511, 960531109,
692510577, 743863232, 159848129, 639142915, 658806616, 286815941, 569150064,
996156909, 474086872, 377428234, 108191201, 968576455, 934066962, 520785392,
648351310, 322768543, 500047228, 717012630, 366640002, 617370336, 747113890,
647615517, 420668064, 485924194, 28548015, 242698362, 20265134, 481161073,
780894508, 716872330, 925052871, 809234518, 209608950, 454869307, 42621234,
266915957, 548835092, 11648368, 200676498, 803279760, 609790836, 522043768,
787672824, 264643232, 571421826, 762085826, 854807719, 119023111, 660310435,
945098645, 838260736, 592383406, 728604232, 586121308, 18945549, 62079587,
8000021, 137221342, 936745518, 867913927, 937623778, 183088542, 624248829,
606106136, 815005922, 728188591, 164502140, 885086995, 646575964, 60630781,
250914884, 619961376, 835493684, 1794097, 350786557, 222634027, 605402916,
871984975, 140157610, 784428245, 701028584, 784157139, 199990301, 49282014,
806191394, 544636448, 696393844, 625422532, 306981977, 200109353, 819880255,
622554727, 966234587, 1715755, 884432882, 186517679, 414057470, 559202957,
356291776, 440462056, 76496043, 54502936, 82793754, 693820485, 333532789,
139408482, 538301356, 908601203, 663844984, 277481039, 494620179, 126148065,
101563902, 543304970, 40138848, 255494176, 250466774, 181548534, 183041503,
553027506, 468172977, 571880068, 685135214, 70030015, 431414252, 965377675,
285528459, 577690235, 3039911, 424468115, 149219671, 315258608, 442938842,
340124780, 620577523, 697442435, 606981307, 195766252, 513624332, 160814831,
144529981, 626344971, 929525101, 167384034, 985564306, 757660450, 674490248,
404160553, 218780132, 253152109, 588527766, 276135385, 293545669, 229980166,
406532593, 544661736, 944987368, 74067610, 979465423, 367319108, 691015763,
308068787, 270297211, 892899529, 571121326, 682341094, 508186314, 992592910,
570463576, 551864557, 443417375, 102996223, 180706669, 66278518, 547390018,
97982020, 377733797, 642211092, 809569594, 442856622, 912786312, 563198351,
549331531, 576357131, 891027263, 77805689, 816522985, 731749256, 313952972,
411776160, 795006290, 22615421, 348238413, 716260746, 223962550, 78670864,
47765882, 267128253, 587371111, 927656165, 192469863, 806624234, 136996971,
759497678, 646978177, 833527505, 472805550, 754214240, 960030895, 232746388,
490616131, 420542303, 904038549, 210637836, 74285318, 144447351, 742135765,
244372617, 87595635, 852731251, 594678505, 794681848, 228154101, 363702627,
673985808, 239196945, 836249623, 602064792, 462168907, 430511049, 331217937,
84426505, 529390112, 953694258, 768941491, 296949641, 617567965, 759210871,
554347066, 314959464, 855978152, 459336095, 416019714, 554419893, 643616814,
307318600, 193723511, 342506504, 737708842, 961578294, 644413804, 283651295,
449519877, 262823100, 438065978, 195660179, 15479674, 929627357, 712657286,
867475048, 618979059, 615899609, 290553872, 46585860, 675146342, 899293157,
138576244, 932939832, 413352510, 228638502, 577046541, 52412367, 271101119,
704058715, 716195674, 113738084, 976781966, 417637854, 201849275, 137988263,
703452509, 833173534, 774723430, 98520292, 647910333, 702073064, 101667724,
93613248, 4773372, 993672667, 598539625, 298728331, 547262186, 609550837,
42278975, 203431476, 764589375, 791435299, 273439277, 15186943, 247517820,
332116413, 672582410, 88991345, 573172714, 370502342, 495515460, 486357723,
529038430, 112617630, 9655079, 54905538, 630913486, 94540925, 694069860,
101033114, 601510215, 405093272, 877399916, 606786230, 712700446, 365826653,
440611748, 222502187, 628732942, 260127071, 415183336, 331627148, 603111841,
484627861, 252203062, 603610758, 918118836, 775502591, 558836403, 458735214,
903545723, 229008632, 239177179, 70767308, 751925156, 652119146, 980361868,
450630793, 63075950, 714904102, 795480239, 196855664, 446357279, 343343138,
751184330, 353543327, 265335039, 291055365, 141693974, 952501609, 772988967,
982806649, 295006336, 142133453, 389243658, 551050114, 837354729, 288032982,
926886748, 940810321, 996269340, 544323652, 123254721, 449847916, 164321665,
408440169, 540527971, 235735087, 384560805, 888470688, 711171300, 414716347,
219479361, 559050803, 610845133, 321258507, 296543705, 253557800, 771631909,
466270561, 966519146, 100544233, 474799959, 147649345, 956135303, 808272257,
279282920, 472357219, 422709994, 530025514, 999788009, 64593897, 709199531,
479060735, 311654131, 943520011, 427742758, 799287390, 782392773, 191335024,
830990096, 336010037, 237942831, 237453992, 695887098, 398366572, 529644737,
344086296, 862051533, 684436865, 317549101, 968659087, 366641438, 1,
49, 1272, 23124, 329180, 3895908, 39783804, 359447204,
925733384, 746545659, 165655001, 158091124, 719304162, 111160209, 171158550,
935012406, 874008903, 988755604, 608336289, 351327718, 211049418, 970686245,
441380023, 920727544, 396494781, 218114186, 934368772, 753990221, 203263446,
488226646, 946324350, 642441651, 816607227, 122420091, 629716118, 498106515,
488881569, 100763230, 814241373, 430998026, 986590664, 188596813, 238499794,
887765759, 719310391, 819612870, 840885905, 584773429, 811468143, 396065785,
368868801, 299761844, 617462619, 308704442, 206242421, 833439007, 106715469,
970135543, 972244832, 66232618, 207050932, 577078708, 955731123, 103929249,
632790957, 297717977, 280927805, 856143814, 140717794, 889342899, 570959166,
553036683, 311778062, 833874032, 321035571, 629235909, 60666525, 19636232,
889773198, 837811568, 283828621, 499062871, 459250525, 468391935, 389843786,
80632526, 462481073, 859711240, 66143264, 831825780, 518914304, 998480225,
496960804, 480385724, 483317701, 923742113, 771054094, 630267330, 478946945,
527928962, 674723787, 882998613, 123711144, 324674723, 964132061, 961988031,
65215295, 858250635, 924300325, 577545014, 241841560, 172586320, 726876085,
210684082, 897202470, 742850020, 161301259, 120853804, 344539574, 836860211,
667275920, 72688787, 930704832, 179668299, 861726583, 168665810, 834696469,
672920894, 419563732, 302874180, 454615268, 934181182, 119694911, 779976833,
216225187, 244379028, 586838513, 942544272, 397970796, 155525782, 435250288,
609294947, 697035870, 790138207, 313089121, 451259481, 904475234, 15500998,
428233316, 352796372, 805867626, 355791012, 191743365, 390372515, 86113794,
224579645, 34292553, 472538607, 244805809, 799547326, 350596592, 550928379,
248605526, 858957317, 809083222, 418025439, 717379009, 843111164, 748566980,
795763411, 344249103, 246799165, 468081584, 533360568, 97839725, 814208152,
370784820, 149643652, 648814350, 586462723, 179226570, 323415874, 413399345,
830824722, 901264775, 785155020, 673315179, 883230707, 320461657, 209574161,
896187167, 641537195, 580708044, 615201169, 907420567, 226969633, 44823693,
653925850, 618905940, 556249274, 683808190, 595045606, 406684866, 817926872,
498013040, 741888764, 255307898, 750076370, 226664326, 45791371, 138249186,
182084615, 925519009, 32002450, 507648904, 36302093, 164244320, 134446595,
176304234, 443232913, 204696272, 377207389, 330407781, 317016375, 255990328,
346121343, 776903928, 865285835, 180645765, 94169320, 523805568, 66571932,
958229276, 706032441, 157122799, 174128102, 265560802, 960871567, 814597354,
840895548, 702037, 848074074, 17426708, 276377856, 55696613, 206160180,
32721003, 453495162, 587538197, 204676036, 610254246, 936113705, 842825687,
202272844, 145230437, 624393323, 739106533, 700708897, 523328161, 691038973,
656087189, 213848962, 927815456, 921255504, 609475698, 113463094, 529085932,
807792149, 579407091, 163833313, 694176222, 471399591, 346973697, 718259544,
297359882, 892552532, 451373341, 120883534, 8029910, 624607649, 606649877,
815313728, 231664869, 673443919, 615486405, 94571095, 110823650, 950289120,
646876432, 928906934, 684469503, 297251947, 919054473, 285157267, 967739040,
274416446, 465229888, 656873003, 825576691, 53305194, 539107135, 609069516,
669008004, 585520763, 526072937, 91836656, 101778461, 538228891, 424599066,
719851020, 234795290, 701214554, 914481398, 497763115, 504286064, 212679726,
409710596, 134500525, 154608785, 554889670, 267547678, 851784437, 749366191,
681515762, 587313005, 604179607, 297539881, 51380469, 30897443, 988568867,
430543091, 168358864, 325894509, 131217074, 122226126, 289735266, 2541560,
697428098, 339809826, 339814711, 568813016, 256466301, 865405619, 710940331,
7424767, 660900037, 729644940, 444, 450105203, 690939247, 459755659,
92556107, 42398758, 782901298, 483436309, 73995240, 784415989, 602791285,
655683750, 744368335, 684929720, 939318197, 1937536, 94209990, 544006669,
195169186, 297173575, 151918090, 559870646, 425964491, 818978660, 571568643,
60393204, 415731654, 547756555, 991386612, 383053326, 997830526, 963081859,
107336308, 898219937, 906988404, 550036125, 981857264, 691293427, 481189647,
501756531, 316529056, 476096058, 168221459, 165690115, 553028411, 960794528,
453386272, 963889156, 71983103, 494867184, 462967097, 635240847, 989817132,
23786457, 968645733, 163475174, 884798755, 971346358, 8231228, 947835970,
751371876, 21594745, 702982989, 997528759, 30899466, 874470660, 839706683,
64336797, 183002010, 415355406, 851375333, 802315034, 662347966, 459017349,
83113197, 807783874, 686211775, 665742332, 548408223, 38712773, 947065654,
224142524, 544199777, 554457822, 161813447, 59932464, 324817969, 826816639,
159675767, 610260222, 802832692, 962264291, 230527850, 654881259, 493134625,
56109407, 491401533, 163680598, 892934948, 889185132, 78662275, 741528574,
616484511, 204394884, 120980232, 4959172, 884202370, 468625389, 987185268,
797914336, 292935354, 542176515, 965256954, 25044127, 701524209, 669825969,
264620823, 983915826, 463815578, 325409981, 142164710, 946513145, 626025918,
890502327, 456729879, 921471703, 889764153, 10834930, 550258959, 888111963,
456661896, 560525119, 254574198, 379302005, 359197537, 748972811, 432885247,
174603143, 495215302, 304225805, 499574, 89067439, 956588800, 479903186,
900293862, 918419160, 874312513, 779518268, 750190343, 34999197, 204187488,
29703716, 310295240, 212734818, 705461990, 880565621, 542764103, 578132976,
871657196, 920555643, 635330221, 603836039, 905337022, 446003049, 531829391,
914627500, 109964459, 793773872, 883594493, 588890899, 761763418, 850946563,
47045637, 406265955, 398330580, 175033998, 98562597, 74022406, 109783010,
888406279, 62923507, 851720727, 920064661, 659715101, 731241623, 740764931,
68490942, 26861674, 832409630, 156628069, 65837301, 277330611, 504531610,
621094682, 513712789, 824543274, 863846088, 522929299, 50674845, 205053841,
391074024, 703020653, 598865065, 977680558, 126857946, 571772915, 596794646,
195429545, 328266420, 36051456, 451216030, 522276964, 948367998, 561406981,
389510759, 585943971, 108053297, 459413669, 288907310, 136029766, 802792879,
520247265, 414339912, 337619243, 597859489, 40005835, 350918, 321070418,
199829979, 141119131, 515535428, 350920730, 314377413, 808898947, 900198037,
799762368, 570476717, 244997759, 402733111, 626061442, 103647198, 938528989,
898060580, 652361018, 641847472, 149112119, 134262079, 887185896, 606038263,
859408453, 950373236, 692335861, 405660442, 565431386, 959094106, 393940636,
423632434, 612413824, 143336067, 663257107, 9730523, 471491852, 112828340,
936303905, 998673093, 55233966, 416039620, 144081002, 565258672, 539355694,
202448366, 14002378, 539019751, 307827209, 288622328, 788194350, 570120788,
965430343, 472467292};
int main() {
while (cin >> n >> k) {
if (k % 2 == 1 || k > n * n / 2) {
cout << 0 << endl;
} else {
int x = 0;
// rep(N, 60) {
for (int N = 1; N < 60; ++N) {
for (int K = 0; K <= N * N / 2; K += 2) {
if (N == n && K == k) {
N = 100;
break;
}
++x;
}
}
// cout << x << endl;
cout << dat[x] << endl;
}
}
}
/*
1 2 3 4
1 2 4 3 2 (+2)
1 4 2 3 4 (+2)
4 1 2 3 6 (+2)
/////
1 2 3 ... 48 49 50
50 49 48 ... 3 2 1
49 47 45
Sum : 1250
*/
/*
# -*- coding: utf-8 -*-
# 整数の入力
while 1:
b, c = map(int, input().split())
# 出力
print("{}".format(c%1000000007))
*/ | delete | 1,716 | 1,746 | 1,716 | 1,716 | TLE | |
p02974 | Python | Runtime Error | import sys
input = sys.stdin.readline
sys.setrecursionlimit(100000)
mod = 10**9 + 7
def read_values():
return map(int, input().split())
def read_index():
return map(lambda x: int(x) - 1, input().split())
def read_list():
return list(read_values())
def read_lists(N):
return [read_list() for n in range(N)]
class V:
def __init__(self, f, v=None):
self.f = f
self.v = v
def __str__(self):
return str(self.v)
def ud(self, n):
if n is None:
return
if self.v is None:
self.v = n
return
self.v = self.f(self.v, n)
def main():
N, K = read_values()
dp = [
[[0 for i in range(N**2 + 1)] for ii in range(N + 1)] for iii in range(N + 1)
]
dp[0][0][0] = 1
for i in range(1, N + 1):
for j in range(N + 1):
for k in range(K + 1):
if k - 2 * j < 0:
continue
dp[i][j][k] = (
(2 * j + 1) * dp[i - 1][j][k - 2 * j]
+ (j + 1) * (j + 1) * dp[i - 1][j + 1][k - 2 * j]
+ dp[i - 1][j - 1][k - 2 * j]
) % mod
print(dp[N][0][K])
if __name__ == "__main__":
main()
| import sys
input = sys.stdin.readline
sys.setrecursionlimit(100000)
mod = 10**9 + 7
def read_values():
return map(int, input().split())
def read_index():
return map(lambda x: int(x) - 1, input().split())
def read_list():
return list(read_values())
def read_lists(N):
return [read_list() for n in range(N)]
class V:
def __init__(self, f, v=None):
self.f = f
self.v = v
def __str__(self):
return str(self.v)
def ud(self, n):
if n is None:
return
if self.v is None:
self.v = n
return
self.v = self.f(self.v, n)
def main():
N, K = read_values()
dp = [
[[0 for i in range(N**2 + 1)] for ii in range(N + 1)] for iii in range(N + 1)
]
dp[0][0][0] = 1
for i in range(1, N + 1):
for j in range(N + 1):
for k in range(K + 1):
if k - 2 * j < 0:
continue
dp[i][j][k] = (
(2 * j + 1) * dp[i - 1][j][k - 2 * j]
+ (
(j + 1) * (j + 1) * dp[i - 1][j + 1][k - 2 * j]
if j + 1 <= N
else 0
)
+ dp[i - 1][j - 1][k - 2 * j]
) % mod
print(dp[N][0][K])
if __name__ == "__main__":
main()
| replace | 56 | 57 | 56 | 61 | 0 | |
p02974 | C++ | Runtime Error | #include <bits/stdc++.h>
using namespace std;
#define int long long
#ifdef LOCAL_DEBUG
#include "LOCAL_DEBUG.hpp"
#endif
int pos[] = {0, 1, 3, 6, 11, 18, 28, 41, 58, 79, 105,
136, 173, 216, 266, 323, 388, 461, 543, 634, 735, 846,
968, 1101, 1246, 1403, 1573, 1756, 1953, 2164, 2390, 2631, 2888,
3161, 3451, 3758, 4083, 4426, 4788, 5169, 5570, 5991, 6433, 6896,
7381, 7888, 8418, 8971, 9548, 10149, 10775};
int ans[] = {
1, 1, 1, 1, 2, 3, 1,
3, 7, 9, 4, 1, 4, 12,
24, 35, 24, 20, 1, 5, 18,
46, 93, 137, 148, 136, 100, 36,
1, 6, 25, 76, 187, 366, 591,
744, 884, 832, 716, 360, 252, 1,
7, 33, 115, 327, 765, 1523, 2553,
3696, 4852, 5708, 5892, 5452, 4212, 2844,
1764, 576, 1, 8, 42, 164, 524,
1400, 3226, 6436, 11323, 17640, 25472, 33280,
40520, 44240, 45512, 40608, 35496, 25632, 18108,
8064, 5184, 1, 9, 52, 224, 790,
2350, 6072, 13768, 27821, 50461, 83420, 127840,
182256, 242272, 301648, 350864, 382576, 389232, 373536,
332640, 273060, 208548, 136512, 81792, 46656, 14400,
1, 10, 63, 296, 1138, 3708, 10538,
26480, 59673, 121626, 226787, 390144, 628744, 949472,
1355952, 1826464, 2341600, 2833632, 3282464, 3584160, 3765600,
3719664, 3531924, 3093336, 2642364, 2010240, 1508544, 963072,
621504, 259200, 158400, 1, 11, 75, 381,
1582, 5582, 17222, 47194, 116457, 261163, 537459,
1022981, 1817652, 3040352, 4810720, 7230928, 10360160, 14178912,
18577792, 23327872, 28132048, 32571504, 36310464, 38903904, 40028724,
39552156, 37457388, 33941412, 29314944, 24179904, 18835776, 13777344,
9452736, 5716800, 3211200, 1742400, 518400, 1, 12,
88, 480, 2137, 8096, 26860, 79376, 211811,
515308, 1153268, 2391936, 4633331, 8438664, 14557048, 23874176,
37407760, 56117824, 80906752, 112162240, 150052400, 193572736, 241706624,
291576384, 341323776, 386160048, 424359540, 450394992, 464545584, 461528208,
446428476, 413557632, 373573440, 321120000, 268449408, 210332160, 162330624,
112550400, 77788800, 46540800, 28497600, 11404800, 6739200, 1,
13, 102, 594, 2819, 11391, 40344, 127508,
364587, 952559, 2293742, 5126898, 10710633, 21042989, 39117852,
69175664, 116857024, 189256368, 294745440, 442503456, 641759376, 900689616,
225195321, 617201401, 74227554, 586823330, 140227131, 711888699, 274217080,
795069832, 242715461, 585116357, 796764497, 861974465, 769155485, 525176285,
146566301, 650715556, 73773796, 455145195, 828946802, 226153586, 685663993,
216281593, 828705600, 536385600, 309484800, 166924800, 87609600, 25401600,
1, 14, 117, 724, 3645, 15626, 58741,
197280, 600215, 1671266, 4295107, 10259436, 22922995, 48184950,
95816051, 181136304, 327071752, 566117888, 942525072, 513281017, 349163810,
532145419, 154557773, 309226767, 88509354, 563257605, 789064441, 766807654,
474675580, 795689314, 599134613, 627066840, 658988947, 307608398, 337632800,
295701193, 44870369, 150212311, 705302359, 336038622, 452522163, 797367958,
62674553, 57993322, 777736994, 845298906, 452367755, 90655804, 810196653,
976943895, 564798323, 582118351, 994783972, 869862386, 697759993, 660441600,
381024000, 1, 15, 133, 871, 4633, 20979,
83313, 295803, 952299, 2809009, 7656027, 19414457, 46086247,
102967901, 217634463, 437195525, 838372452, 540635289, 722168530, 638311860,
640827391, 196046908, 898688562, 478199884, 793020369, 808862771, 562236075,
94791602, 385333320, 237794527, 197694759, 398043392, 504456766, 579736664,
78137089, 793367253, 961295251, 280517488, 179779783, 947563092, 901772777,
859566930, 199212409, 920781370, 362900807, 735004334, 297264154, 482748036,
653703312, 140400674, 623159781, 320434095, 373194802, 13313867, 205909676,
360223815, 570584277, 68075848, 372652149, 961247580, 23084534, 261139053,
151302323, 715359965, 625702393, 1, 16, 150, 1036,
5802, 27648, 115538, 431844, 1464468, 4554040, 13096378,
35069940, 87969166, 207781760, 464351910, 986188668, 998611836, 879505923,
237509223, 15110629, 621334822, 88677622, 257578542, 963016850, 235638961,
442107823, 429101453, 483004748, 329733855, 718448185, 266304376, 413950543,
256286771, 626720357, 318467482, 59069608, 81901162, 352730851, 104241055,
503595237, 956355036, 534522134, 457799859, 108929893, 887297322, 424614770,
265024591, 876853471, 515703045, 692038809, 210906163, 20070317, 468291405,
145357835, 797577421, 232358134, 747771239, 343859985, 833879609, 78548665,
289896769, 449285934, 313197004, 379603290, 397630660, 609910102, 442642726,
627950853, 722186028, 705163253, 998661511, 771071664, 636940611, 1,
17, 168, 1220, 7172, 35852, 157132, 616084,
2192506, 7159090, 21631676, 60902460, 160707468, 399489140, 939796228,
101060910, 481320121, 151453550, 952463061, 931694473, 957528293, 554162053,
990142499, 644946993, 651797781, 791594351, 556120466, 271969917, 107619398,
710253075, 280526462, 615698879, 99748930, 775178221, 257586036, 645364809,
806795120, 340635512, 801741075, 790520661, 68328385, 331513794, 351728404,
931812262, 91105169, 176869824, 445724501, 370449983, 359815736, 918724628,
869062973, 659791249, 657727222, 395793733, 32692523, 78858425, 151369211,
628504487, 842750087, 152091477, 889718876, 908002421, 944598446, 656459208,
712920845, 47550280, 92244967, 110652620, 951703750, 217822851, 901098263,
655149074, 861896271, 859184013, 992613245, 768042116, 807916959, 335381553,
909568095, 153171069, 827990317, 681893483, 1, 18, 187,
1424, 8764, 45832, 210072, 861400, 3206786, 10957868,
34666130, 102239488, 282743580, 736889224, 817936097, 262532028, 534038590,
412279142, 965109380, 86702267, 846482566, 945052509, 644517943, 548776024,
679330947, 152291502, 882910517, 188127435, 636778925, 902059202, 132531208,
193904122, 893705022, 246193070, 652079051, 958060250, 148697872, 504141990,
371410212, 807466717, 514477363, 565424570, 560794838, 11419155, 215137208,
665710713, 791504234, 359367396, 224050172, 509091270, 125989128, 782600310,
957126038, 667219607, 386301613, 605448653, 296557741, 618019404, 194294675,
222923480, 765962783, 743934970, 24324611, 512643153, 214242880, 286900578,
228877964, 91240846, 430467141, 533029377, 904804693, 373207899, 916503101,
83598539, 560288494, 363356684, 68282446, 152683809, 284461190, 124425011,
167972327, 428909487, 373215034, 420008537, 513304383, 874743039, 487193257,
97337408, 532639641, 184378261, 955976093, 1, 19, 207,
1649, 10600, 57852, 276620, 1183172, 4595034, 16384606,
54107670, 166643130, 481442164, 311240781, 381378831, 288429444, 380463632,
370477330, 171662912, 688513797, 626045604, 789881798, 844990830, 70546834,
230422087, 267733218, 970080423, 75064762, 104073936, 888990608, 393490487,
819401315, 362017415, 197941501, 97730360, 491049732, 790022455, 142301163,
381999002, 81566974, 255547256, 500580164, 503785886, 874661360, 953064009,
357278689, 416715628, 656421867, 311332859, 849655408, 575613107, 850236831,
533549113, 255339339, 611845477, 501164398, 135987981, 672393680, 678611757,
552403430, 470027818, 333312311, 203812034, 929380798, 133842121, 497262544,
839881753, 29703780, 133717366, 249364505, 959337844, 632980495, 72879056,
356819838, 662140760, 182352973, 260787823, 329159184, 423643610, 488600943,
164109163, 8143787, 184454683, 684285006, 693158498, 382122550, 488552031,
777204359, 564238497, 598675373, 603916585, 720234840, 93182262, 238936257,
486420235, 352604922, 958291193, 880928218, 736558676, 163545641, 189347824,
1, 20, 228, 1896, 12703, 72200, 359348,
1599616, 6465450, 23997032, 82508708, 264654080, 796563486, 260832418,
76986106, 528774007, 854313906, 307546108, 722735109, 61004626, 805619536,
18191861, 511411798, 993782454, 401030744, 633897378, 70862649, 96855526,
314416445, 92910833, 135520920, 492052755, 24334887, 643976444, 574388511,
317610455, 122930943, 637889505, 255461238, 950861369, 48876234, 149504663,
198682481, 942670278, 866921314, 563621302, 960474580, 980132644, 624295523,
399490883, 351714973, 945626033, 827908349, 157456205, 481861323, 472454109,
343580291, 683697065, 95059407, 841332348, 464714941, 596887160, 38681949,
757883329, 590303711, 64921694, 730086270, 15240461, 714742087, 32874447,
175996750, 277466516, 788882909, 11880203, 95097385, 778398376, 531252352,
479554466, 557013590, 609738833, 798714176, 859324339, 721484640, 268442938,
861267595, 806087188, 31691029, 950412807, 580575404, 849451646, 691790951,
264837637, 967322620, 365040170, 622467624, 456436788, 658680316, 60575186,
387550026, 215002020, 31349904, 449373833, 559514745, 640364153, 807042078,
450172023, 562637973, 109112418, 545193132, 195217263, 976304283, 1,
21, 250, 2166, 15097, 89189, 461164, 2132144,
8950214, 34503182, 123236828, 410729140, 284813823, 790835929, 594736274,
153822108, 374418504, 157537842, 147846917, 133568389, 483576696, 508616649,
656867821, 84463125, 640047601, 955370715, 182167616, 49108700, 229345632,
795610484, 502493987, 857101031, 142485158, 996679960, 742503997, 723858587,
317526153, 365342533, 250775491, 442738912, 408346120, 881242865, 135363327,
231979623, 347291745, 824934645, 995772018, 164592917, 354883487, 450805745,
963969802, 171006181, 92161176, 169883419, 961669090, 26844445, 393784092,
571606470, 464707158, 34144520, 652396373, 745405475, 202923498, 135935314,
703695236, 776259115, 48310283, 874186699, 219390686, 510394758, 751965065,
418424556, 8781061, 736058807, 674014147, 674780706, 590530540, 4352977,
803825827, 167292329, 541083402, 260679638, 665083995, 939990721, 816665296,
886017767, 669822229, 694816125, 643235536, 937314556, 115942268, 261159535,
687177905, 12245758, 694615643, 977706180, 217949106, 118952653, 898868241,
856650616, 42954342, 330321980, 535121720, 982503521, 719423135, 714354007,
18745970, 333448882, 302037622, 935654015, 778423936, 317991952, 284756555,
504736970, 155871365, 118263505, 797065125, 640838446, 258037348, 34344762,
502389803, 911086550, 1, 22, 273, 2460, 17807,
109158, 585339, 2805752, 12209406, 48792492, 180680070, 624410736,
25734764, 199973794, 977710523, 571365953, 412869707, 328237414, 214863466,
633048751, 257394955, 317735309, 673309005, 193600985, 704135816, 514918834,
650479735, 33606857, 490034801, 698396427, 67986999, 220797055, 218864611,
931163713, 940790978, 675674698, 85542051, 543018292, 61247584, 910803604,
831296179, 923943160, 89478028, 104500393, 161998091, 254912705, 539249258,
547749719, 357852173, 690014841, 206926249, 893887199, 747112232, 382059625,
148865046, 301618706, 260333115, 442306036, 247371284, 782005651, 233300621,
920894203, 317455792, 678639547, 427050277, 482884001, 854060466, 980543322,
860769666, 701293636, 771136168, 670745480, 486701027, 168461356, 848787800,
289825171, 498776317, 33320170, 430165721, 821516580, 115533370, 398776967,
333310602, 563097053, 553134182, 219816464, 216637272, 206027601, 933677337,
925510467, 267639197, 43693887, 486722546, 270929495, 877730912, 261947307,
375318068, 692508932, 989184491, 226696206, 288508969, 739837562, 849035543,
782296408, 273955665, 801085382, 431898190, 935043965, 202752072, 867866169,
151133676, 67940990, 78118516, 742654574, 165553271, 254022475, 668960857,
929973305, 656759571, 877339826, 925206924, 133648890, 623964326, 796176354,
256442424, 844384225, 955053908, 35821657, 33969824, 328610099, 171474448,
265634834, 954990510, 1, 23, 297, 2779, 20859,
132473, 735535, 3649437, 16435370, 67971642, 260491974, 931772466,
129241853, 915880695, 773220207, 21124907, 663657824, 89235883, 562087424,
395633225, 79602143, 818737728, 503346111, 923762587, 810187543, 71950684,
872552891, 722894374, 788701216, 792043650, 839896539, 577542972, 345484502,
350106805, 159630680, 594479078, 806985602, 451202244, 562057157, 345406448,
404888318, 371479292, 122121086, 196184273, 855722413, 625056343, 209132008,
580725504, 234791519, 683270249, 879431955, 820639155, 890517789, 877206124,
780147370, 943542736, 532169988, 134361777, 389279830, 486085405, 212150153,
60309713, 36144061, 220641769, 167907687, 433032241, 672669299, 4840381,
543970499, 860603358, 920463673, 899153827, 269139419, 99866794, 833550296,
732963165, 649634036, 220976898, 948879986, 81746947, 249278044, 943429751,
227240067, 617290217, 857759442, 317672542, 702411387, 392102340, 598392406,
771484657, 20769431, 772211314, 777981688, 103043307, 336611982, 922346108,
46010568, 620920750, 740298345, 143296430, 127113300, 229361025, 452883985,
298773134, 583669967, 430943791, 878469881, 498554889, 377075156, 399618101,
518539100, 610655946, 762624102, 339746521, 193491143, 582788075, 58498274,
139175929, 439487543, 659039143, 969039085, 205473123, 149794944, 735361805,
144310487, 952281582, 885994682, 290034640, 449859219, 870975475, 717604104,
930837761, 466542500, 510501275, 368063612, 61813298, 959329905, 938922014,
660077190, 12025968, 335011033, 657136343, 351072920, 964781583, 196462283,
1, 24, 322, 3124, 24280, 159528, 915834,
4696644, 21857553, 93405656, 369882084, 367190881, 745178532, 541448535,
237690972, 408537702, 191376116, 678513161, 493570976, 397907192, 9101765,
658714208, 122356973, 514532531, 911169029, 6916896, 782796, 910119724,
942560918, 62371227, 773940129, 523667340, 669757203, 42568262, 891666384,
467022993, 486796667, 727294526, 413613585, 787453753, 599953158, 417187968,
359849625, 117069116, 879478181, 12380000, 910899870, 838986319, 102687453,
103327364, 376800830, 429223538, 780159138, 706916356, 587575355, 971169352,
36010810, 483798044, 344462034, 787276711, 359714668, 737585540, 514856433,
506547585, 7966248, 935961, 931790046, 725219981, 437246235, 737823353,
539625329, 101294921, 998345360, 158678756, 14552916, 434899855, 58679632,
771567929, 908041362, 370603042, 958461645, 473954165, 329932246, 645017860,
950250115, 632956030, 39737256, 308287817, 593859369, 848980890, 73354610,
67983312, 794665532, 744501399, 571146358, 79777328, 768540650, 301591668,
87146707, 749547055, 542914952, 113807115, 981646049, 443442346, 689844336,
226785366, 664441023, 644644459, 65534356, 186334852, 433121661, 818953887,
687026114, 344822747, 464015963, 110899493, 294091084, 65199948, 37449794,
719226153, 501099656, 413337315, 725255533, 799293560, 259962068, 954615054,
373654234, 764439094, 914044890, 22085466, 539035590, 698634111, 313016212,
98993468, 941478268, 955683335, 902077766, 420565422, 767959775, 128648986,
355285226, 534029655, 104714136, 932643222, 778200211, 56428536, 225880543,
792355687, 449940761, 181471652, 529937629, 325235521, 6575392, 94094707,
441392085, 37264955, 911557047, 1, 25, 348, 3496,
28098, 190746, 1130768, 5985744, 28747851, 126764795, 517958180,
975500521, 75313899, 914923483, 611051644, 458281681, 932346365, 712529240,
185024083, 463834094, 950836649, 286357381, 871292163, 434939852, 58330077,
629835295, 27932676, 66354549, 10923173, 590226200, 526183672, 176005584,
809584977, 222348292, 260397896, 396327746, 178971085, 774808076, 78650222,
507195902, 144802453, 299847298, 581537053, 724817078, 350425193, 503589319,
654904119, 595937600, 992781673, 82554146, 868891604, 769490422, 119334199,
287573489, 85347169, 118147346, 949694675, 540939467, 927324362, 545027201,
610310429, 769058023, 21423, 262519735, 786795808, 240407039, 428554518,
447092428, 788617633, 367724192, 374279457, 343082569, 856162651, 150954733,
962857235, 700751807, 895999415, 533537747, 537990547, 268357366, 869434038,
633081543, 603452058, 947934680, 987367826, 743179254, 710352935, 835787228,
706586787, 845202323, 238777269, 405136472, 480736674, 155194042, 871452828,
677921910, 616952227, 984554304, 602482844, 894952109, 161534829, 782737895,
850072208, 670793244, 828100052, 222399146, 284700626, 231919567, 306545173,
673216888, 772842480, 314744315, 347738200, 25002680, 730048408, 649455506,
745857274, 196252843, 529935260, 419302767, 276709210, 732855171, 343508231,
624945362, 861002432, 484757974, 367927715, 209929226, 661865936, 531107025,
413469524, 479519565, 741904536, 610072165, 606639245, 934344602, 716197790,
587584177, 185414563, 306822687, 841034662, 971868532, 919896238, 158358640,
773475266, 936203252, 665923149, 911486615, 197651366, 774528535, 82937079,
883806524, 130206852, 774201811, 995994000, 245370199, 842572718, 793423605,
740588350, 687616120, 657690139, 857790226, 37323118, 88399209, 523321086,
117621631, 71036645, 222192424, 788926021, 202125596, 1, 26,
375, 3896, 32342, 226580, 1385350, 7560544, 37426495,
170077814, 716127109, 814596482, 388283574, 187079164, 480126707, 290089727,
38629756, 54115650, 64891257, 901599546, 718222041, 911275669, 323565019,
817912019, 805459451, 803612364, 201797073, 732830955, 80380678, 23464457,
701195891, 272214917, 913862649, 132026200, 669751010, 759341231, 973676755,
794065196, 967438659, 308299894, 10712690, 949669597, 781686555, 88559004,
727530543, 318751597, 278470531, 434911202, 804701133, 324324750, 981099143,
232682614, 987104568, 776649739, 786487389, 442468777, 569068005, 663709268,
881510700, 203686642, 57967683, 568729400, 236001193, 623959074, 703861418,
908672716, 70204475, 867825588, 827103298, 241630317, 362696969, 415618616,
805038660, 598704556, 10082872, 643477587, 415164213, 703084166, 477367476,
20036406, 629980785, 802614294, 952521645, 17601466, 311433959, 830294700,
548394039, 535645146, 521413012, 929141249, 283365227, 727229980, 443388093,
410708269, 286618040, 319768543, 938841603, 93475597, 394693465, 931196821,
495806189, 902879580, 707905623, 303901454, 576396872, 484544924, 486011674,
564305854, 311518869, 856442237, 372745088, 366968335, 813470622, 720542245,
551543931, 596748971, 778551123, 354920979, 984250497, 691689872, 327423759,
52302396, 920309409, 457393341, 162758194, 401889329, 760192486, 361045291,
58998809, 845800809, 8575285, 649668894, 501939170, 542308042, 574502757,
192463535, 690505425, 204738512, 689813836, 483570629, 525148782, 216925832,
952334594, 68584858, 946061868, 229986068, 113082103, 705545851, 563504064,
430610853, 209937938, 608555345, 578039088, 750439353, 944169681, 417934823,
74422181, 960090808, 568355902, 435674968, 894299009, 15861008, 618713868,
509911155, 168869978, 339481775, 369451744, 600513141, 71634326, 781507214,
857107917, 106564183, 736233715, 362800524, 615467708, 519437498, 342065337,
206666492, 505918934, 308299385, 20927738, 106279730, 457391057, 1,
27, 403, 4325, 37042, 267514, 1685106, 9470830,
48268511, 225792189, 978561725, 958557158, 38052071, 919433401, 254995547,
546697380, 704487939, 32839999, 508901654, 551556389, 663564198, 695178769,
814009554, 547143595, 371559020, 945387943, 670094820, 616330760, 976064124,
607380120, 8699769, 998280938, 580008436, 958036252, 912203574, 544195790,
396609897, 954428754, 708902921, 801338681, 431017191, 381717232, 344144422,
131861617, 874277396, 830300192, 596462835, 318671397, 244894238, 904557382,
834593756, 283869037, 697514761, 969250693, 509524190, 913260759, 384371901,
692021356, 509945770, 32685910, 505430483, 907189201, 193340383, 693205397,
603006308, 305262013, 925218957, 968092842, 27052064, 47727228, 477199307,
293774777, 98292616, 663047137, 995897620, 288543890, 998081856, 524487172,
892499155, 556044593, 972323813, 578208602, 933674462, 509188659, 985492681,
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31, 525, 6351, 61037, 493071, 3466221, 21705119,
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1, 38, 777, 11244, 128419, 1226846, 10161959,
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453807002, 277591996, 614231800, 858886730, 933633627, 855960053, 795294602,
320736325, 160050137, 741837408, 875372187, 933116510, 439299086, 339530899,
998809886, 988163112, 414204450, 626581582, 425958595, 547450689, 257877182,
25212376, 487090639, 693248108, 736165691, 261048117, 530252319, 667332870,
224234420, 283256778, 493030047, 381167115, 959191937, 567700201, 408470930,
456733167, 877572444, 640070139, 177231251, 53889209, 630925282, 764167042,
903138510, 822950867, 161878067, 741376139, 620673064, 828400388, 989198090,
398235498, 335164252, 650259410, 895482301, 288920533, 986020511, 960531109,
692510577, 743863232, 159848129, 639142915, 658806616, 286815941, 569150064,
996156909, 474086872, 377428234, 108191201, 968576455, 934066962, 520785392,
648351310, 322768543, 500047228, 717012630, 366640002, 617370336, 747113890,
647615517, 420668064, 485924194, 28548015, 242698362, 20265134, 481161073,
780894508, 716872330, 925052871, 809234518, 209608950, 454869307, 42621234,
266915957, 548835092, 11648368, 200676498, 803279760, 609790836, 522043768,
787672824, 264643232, 571421826, 762085826, 854807719, 119023111, 660310435,
945098645, 838260736, 592383406, 728604232, 586121308, 18945549, 62079587,
8000021, 137221342, 936745518, 867913927, 937623778, 183088542, 624248829,
606106136, 815005922, 728188591, 164502140, 885086995, 646575964, 60630781,
250914884, 619961376, 835493684, 1794097, 350786557, 222634027, 605402916,
871984975, 140157610, 784428245, 701028584, 784157139, 199990301, 49282014,
806191394, 544636448, 696393844, 625422532, 306981977, 200109353, 819880255,
622554727, 966234587, 1715755, 884432882, 186517679, 414057470, 559202957,
356291776, 440462056, 76496043, 54502936, 82793754, 693820485, 333532789,
139408482, 538301356, 908601203, 663844984, 277481039, 494620179, 126148065,
101563902, 543304970, 40138848, 255494176, 250466774, 181548534, 183041503,
553027506, 468172977, 571880068, 685135214, 70030015, 431414252, 965377675,
285528459, 577690235, 3039911, 424468115, 149219671, 315258608, 442938842,
340124780, 620577523, 697442435, 606981307, 195766252, 513624332, 160814831,
144529981, 626344971, 929525101, 167384034, 985564306, 757660450, 674490248,
404160553, 218780132, 253152109, 588527766, 276135385, 293545669, 229980166,
406532593, 544661736, 944987368, 74067610, 979465423, 367319108, 691015763,
308068787, 270297211, 892899529, 571121326, 682341094, 508186314, 992592910,
570463576, 551864557, 443417375, 102996223, 180706669, 66278518, 547390018,
97982020, 377733797, 642211092, 809569594, 442856622, 912786312, 563198351,
549331531, 576357131, 891027263, 77805689, 816522985, 731749256, 313952972,
411776160, 795006290, 22615421, 348238413, 716260746, 223962550, 78670864,
47765882, 267128253, 587371111, 927656165, 192469863, 806624234, 136996971,
759497678, 646978177, 833527505, 472805550, 754214240, 960030895, 232746388,
490616131, 420542303, 904038549, 210637836, 74285318, 144447351, 742135765,
244372617, 87595635, 852731251, 594678505, 794681848, 228154101, 363702627,
673985808, 239196945, 836249623, 602064792, 462168907, 430511049, 331217937,
84426505, 529390112, 953694258, 768941491, 296949641, 617567965, 759210871,
554347066, 314959464, 855978152, 459336095, 416019714, 554419893, 643616814,
307318600, 193723511, 342506504, 737708842, 961578294, 644413804, 283651295,
449519877, 262823100, 438065978, 195660179, 15479674, 929627357, 712657286,
867475048, 618979059, 615899609, 290553872, 46585860, 675146342, 899293157,
138576244, 932939832, 413352510, 228638502, 577046541, 52412367, 271101119,
704058715, 716195674, 113738084, 976781966, 417637854, 201849275, 137988263,
703452509, 833173534, 774723430, 98520292, 647910333, 702073064, 101667724,
93613248, 4773372, 993672667, 598539625, 298728331, 547262186, 609550837,
42278975, 203431476, 764589375, 791435299, 273439277, 15186943, 247517820,
332116413, 672582410, 88991345, 573172714, 370502342, 495515460, 486357723,
529038430, 112617630, 9655079, 54905538, 630913486, 94540925, 694069860,
101033114, 601510215, 405093272, 877399916, 606786230, 712700446, 365826653,
440611748, 222502187, 628732942, 260127071, 415183336, 331627148, 603111841,
484627861, 252203062, 603610758, 918118836, 775502591, 558836403, 458735214,
903545723, 229008632, 239177179, 70767308, 751925156, 652119146, 980361868,
450630793, 63075950, 714904102, 795480239, 196855664, 446357279, 343343138,
751184330, 353543327, 265335039, 291055365, 141693974, 952501609, 772988967,
982806649, 295006336, 142133453, 389243658, 551050114, 837354729, 288032982,
926886748, 940810321, 996269340, 544323652, 123254721, 449847916, 164321665,
408440169, 540527971, 235735087, 384560805, 888470688, 711171300, 414716347,
219479361, 559050803, 610845133, 321258507, 296543705, 253557800, 771631909,
466270561, 966519146, 100544233, 474799959, 147649345, 956135303, 808272257,
279282920, 472357219, 422709994, 530025514, 999788009, 64593897, 709199531,
479060735, 311654131, 943520011, 427742758, 799287390, 782392773, 191335024,
830990096, 336010037, 237942831, 237453992, 695887098, 398366572, 529644737,
344086296, 862051533, 684436865, 317549101, 968659087, 366641438, 1,
49, 1272, 23124, 329180, 3895908, 39783804, 359447204,
925733384, 746545659, 165655001, 158091124, 719304162, 111160209, 171158550,
935012406, 874008903, 988755604, 608336289, 351327718, 211049418, 970686245,
441380023, 920727544, 396494781, 218114186, 934368772, 753990221, 203263446,
488226646, 946324350, 642441651, 816607227, 122420091, 629716118, 498106515,
488881569, 100763230, 814241373, 430998026, 986590664, 188596813, 238499794,
887765759, 719310391, 819612870, 840885905, 584773429, 811468143, 396065785,
368868801, 299761844, 617462619, 308704442, 206242421, 833439007, 106715469,
970135543, 972244832, 66232618, 207050932, 577078708, 955731123, 103929249,
632790957, 297717977, 280927805, 856143814, 140717794, 889342899, 570959166,
553036683, 311778062, 833874032, 321035571, 629235909, 60666525, 19636232,
889773198, 837811568, 283828621, 499062871, 459250525, 468391935, 389843786,
80632526, 462481073, 859711240, 66143264, 831825780, 518914304, 998480225,
496960804, 480385724, 483317701, 923742113, 771054094, 630267330, 478946945,
527928962, 674723787, 882998613, 123711144, 324674723, 964132061, 961988031,
65215295, 858250635, 924300325, 577545014, 241841560, 172586320, 726876085,
210684082, 897202470, 742850020, 161301259, 120853804, 344539574, 836860211,
667275920, 72688787, 930704832, 179668299, 861726583, 168665810, 834696469,
672920894, 419563732, 302874180, 454615268, 934181182, 119694911, 779976833,
216225187, 244379028, 586838513, 942544272, 397970796, 155525782, 435250288,
609294947, 697035870, 790138207, 313089121, 451259481, 904475234, 15500998,
428233316, 352796372, 805867626, 355791012, 191743365, 390372515, 86113794,
224579645, 34292553, 472538607, 244805809, 799547326, 350596592, 550928379,
248605526, 858957317, 809083222, 418025439, 717379009, 843111164, 748566980,
795763411, 344249103, 246799165, 468081584, 533360568, 97839725, 814208152,
370784820, 149643652, 648814350, 586462723, 179226570, 323415874, 413399345,
830824722, 901264775, 785155020, 673315179, 883230707, 320461657, 209574161,
896187167, 641537195, 580708044, 615201169, 907420567, 226969633, 44823693,
653925850, 618905940, 556249274, 683808190, 595045606, 406684866, 817926872,
498013040, 741888764, 255307898, 750076370, 226664326, 45791371, 138249186,
182084615, 925519009, 32002450, 507648904, 36302093, 164244320, 134446595,
176304234, 443232913, 204696272, 377207389, 330407781, 317016375, 255990328,
346121343, 776903928, 865285835, 180645765, 94169320, 523805568, 66571932,
958229276, 706032441, 157122799, 174128102, 265560802, 960871567, 814597354,
840895548, 702037, 848074074, 17426708, 276377856, 55696613, 206160180,
32721003, 453495162, 587538197, 204676036, 610254246, 936113705, 842825687,
202272844, 145230437, 624393323, 739106533, 700708897, 523328161, 691038973,
656087189, 213848962, 927815456, 921255504, 609475698, 113463094, 529085932,
807792149, 579407091, 163833313, 694176222, 471399591, 346973697, 718259544,
297359882, 892552532, 451373341, 120883534, 8029910, 624607649, 606649877,
815313728, 231664869, 673443919, 615486405, 94571095, 110823650, 950289120,
646876432, 928906934, 684469503, 297251947, 919054473, 285157267, 967739040,
274416446, 465229888, 656873003, 825576691, 53305194, 539107135, 609069516,
669008004, 585520763, 526072937, 91836656, 101778461, 538228891, 424599066,
719851020, 234795290, 701214554, 914481398, 497763115, 504286064, 212679726,
409710596, 134500525, 154608785, 554889670, 267547678, 851784437, 749366191,
681515762, 587313005, 604179607, 297539881, 51380469, 30897443, 988568867,
430543091, 168358864, 325894509, 131217074, 122226126, 289735266, 2541560,
697428098, 339809826, 339814711, 568813016, 256466301, 865405619, 710940331,
7424767, 660900037, 729644940, 444, 450105203, 690939247, 459755659,
92556107, 42398758, 782901298, 483436309, 73995240, 784415989, 602791285,
655683750, 744368335, 684929720, 939318197, 1937536, 94209990, 544006669,
195169186, 297173575, 151918090, 559870646, 425964491, 818978660, 571568643,
60393204, 415731654, 547756555, 991386612, 383053326, 997830526, 963081859,
107336308, 898219937, 906988404, 550036125, 981857264, 691293427, 481189647,
501756531, 316529056, 476096058, 168221459, 165690115, 553028411, 960794528,
453386272, 963889156, 71983103, 494867184, 462967097, 635240847, 989817132,
23786457, 968645733, 163475174, 884798755, 971346358, 8231228, 947835970,
751371876, 21594745, 702982989, 997528759, 30899466, 874470660, 839706683,
64336797, 183002010, 415355406, 851375333, 802315034, 662347966, 459017349,
83113197, 807783874, 686211775, 665742332, 548408223, 38712773, 947065654,
224142524, 544199777, 554457822, 161813447, 59932464, 324817969, 826816639,
159675767, 610260222, 802832692, 962264291, 230527850, 654881259, 493134625,
56109407, 491401533, 163680598, 892934948, 889185132, 78662275, 741528574,
616484511, 204394884, 120980232, 4959172, 884202370, 468625389, 987185268,
797914336, 292935354, 542176515, 965256954, 25044127, 701524209, 669825969,
264620823, 983915826, 463815578, 325409981, 142164710, 946513145, 626025918,
890502327, 456729879, 921471703, 889764153, 10834930, 550258959, 888111963,
456661896, 560525119, 254574198, 379302005, 359197537, 748972811, 432885247,
174603143, 495215302, 304225805, 499574, 89067439, 956588800, 479903186,
900293862, 918419160, 874312513, 779518268, 750190343, 34999197, 204187488,
29703716, 310295240, 212734818, 705461990, 880565621, 542764103, 578132976,
871657196, 920555643, 635330221, 603836039, 905337022, 446003049, 531829391,
914627500, 109964459, 793773872, 883594493, 588890899, 761763418, 850946563,
47045637, 406265955, 398330580, 175033998, 98562597, 74022406, 109783010,
888406279, 62923507, 851720727, 920064661, 659715101, 731241623, 740764931,
68490942, 26861674, 832409630, 156628069, 65837301, 277330611, 504531610,
621094682, 513712789, 824543274, 863846088, 522929299, 50674845, 205053841,
391074024, 703020653, 598865065, 977680558, 126857946, 571772915, 596794646,
195429545, 328266420, 36051456, 451216030, 522276964, 948367998, 561406981,
389510759, 585943971, 108053297, 459413669, 288907310, 136029766, 802792879,
520247265, 414339912, 337619243, 597859489, 40005835, 350918, 321070418,
199829979, 141119131, 515535428, 350920730, 314377413, 808898947, 900198037,
799762368, 570476717, 244997759, 402733111, 626061442, 103647198, 938528989,
898060580, 652361018, 641847472, 149112119, 134262079, 887185896, 606038263,
859408453, 950373236, 692335861, 405660442, 565431386, 959094106, 393940636,
423632434, 612413824, 143336067, 663257107, 9730523, 471491852, 112828340,
936303905, 998673093, 55233966, 416039620, 144081002, 565258672, 539355694,
202448366, 14002378, 539019751, 307827209, 288622328, 788194350, 570120788,
965430343, 472467292};
signed main() {
int n, k;
cin >> n >> k;
if (k % 2 == 1 || n == 0)
cout << 0 << endl;
else
cout << ans[pos[n - 1] + k / 2] << endl;
return 0;
}
| #include <bits/stdc++.h>
using namespace std;
#define int long long
#ifdef LOCAL_DEBUG
#include "LOCAL_DEBUG.hpp"
#endif
int pos[] = {0, 1, 3, 6, 11, 18, 28, 41, 58, 79, 105,
136, 173, 216, 266, 323, 388, 461, 543, 634, 735, 846,
968, 1101, 1246, 1403, 1573, 1756, 1953, 2164, 2390, 2631, 2888,
3161, 3451, 3758, 4083, 4426, 4788, 5169, 5570, 5991, 6433, 6896,
7381, 7888, 8418, 8971, 9548, 10149, 10775};
int ans[] = {
1, 1, 1, 1, 2, 3, 1,
3, 7, 9, 4, 1, 4, 12,
24, 35, 24, 20, 1, 5, 18,
46, 93, 137, 148, 136, 100, 36,
1, 6, 25, 76, 187, 366, 591,
744, 884, 832, 716, 360, 252, 1,
7, 33, 115, 327, 765, 1523, 2553,
3696, 4852, 5708, 5892, 5452, 4212, 2844,
1764, 576, 1, 8, 42, 164, 524,
1400, 3226, 6436, 11323, 17640, 25472, 33280,
40520, 44240, 45512, 40608, 35496, 25632, 18108,
8064, 5184, 1, 9, 52, 224, 790,
2350, 6072, 13768, 27821, 50461, 83420, 127840,
182256, 242272, 301648, 350864, 382576, 389232, 373536,
332640, 273060, 208548, 136512, 81792, 46656, 14400,
1, 10, 63, 296, 1138, 3708, 10538,
26480, 59673, 121626, 226787, 390144, 628744, 949472,
1355952, 1826464, 2341600, 2833632, 3282464, 3584160, 3765600,
3719664, 3531924, 3093336, 2642364, 2010240, 1508544, 963072,
621504, 259200, 158400, 1, 11, 75, 381,
1582, 5582, 17222, 47194, 116457, 261163, 537459,
1022981, 1817652, 3040352, 4810720, 7230928, 10360160, 14178912,
18577792, 23327872, 28132048, 32571504, 36310464, 38903904, 40028724,
39552156, 37457388, 33941412, 29314944, 24179904, 18835776, 13777344,
9452736, 5716800, 3211200, 1742400, 518400, 1, 12,
88, 480, 2137, 8096, 26860, 79376, 211811,
515308, 1153268, 2391936, 4633331, 8438664, 14557048, 23874176,
37407760, 56117824, 80906752, 112162240, 150052400, 193572736, 241706624,
291576384, 341323776, 386160048, 424359540, 450394992, 464545584, 461528208,
446428476, 413557632, 373573440, 321120000, 268449408, 210332160, 162330624,
112550400, 77788800, 46540800, 28497600, 11404800, 6739200, 1,
13, 102, 594, 2819, 11391, 40344, 127508,
364587, 952559, 2293742, 5126898, 10710633, 21042989, 39117852,
69175664, 116857024, 189256368, 294745440, 442503456, 641759376, 900689616,
225195321, 617201401, 74227554, 586823330, 140227131, 711888699, 274217080,
795069832, 242715461, 585116357, 796764497, 861974465, 769155485, 525176285,
146566301, 650715556, 73773796, 455145195, 828946802, 226153586, 685663993,
216281593, 828705600, 536385600, 309484800, 166924800, 87609600, 25401600,
1, 14, 117, 724, 3645, 15626, 58741,
197280, 600215, 1671266, 4295107, 10259436, 22922995, 48184950,
95816051, 181136304, 327071752, 566117888, 942525072, 513281017, 349163810,
532145419, 154557773, 309226767, 88509354, 563257605, 789064441, 766807654,
474675580, 795689314, 599134613, 627066840, 658988947, 307608398, 337632800,
295701193, 44870369, 150212311, 705302359, 336038622, 452522163, 797367958,
62674553, 57993322, 777736994, 845298906, 452367755, 90655804, 810196653,
976943895, 564798323, 582118351, 994783972, 869862386, 697759993, 660441600,
381024000, 1, 15, 133, 871, 4633, 20979,
83313, 295803, 952299, 2809009, 7656027, 19414457, 46086247,
102967901, 217634463, 437195525, 838372452, 540635289, 722168530, 638311860,
640827391, 196046908, 898688562, 478199884, 793020369, 808862771, 562236075,
94791602, 385333320, 237794527, 197694759, 398043392, 504456766, 579736664,
78137089, 793367253, 961295251, 280517488, 179779783, 947563092, 901772777,
859566930, 199212409, 920781370, 362900807, 735004334, 297264154, 482748036,
653703312, 140400674, 623159781, 320434095, 373194802, 13313867, 205909676,
360223815, 570584277, 68075848, 372652149, 961247580, 23084534, 261139053,
151302323, 715359965, 625702393, 1, 16, 150, 1036,
5802, 27648, 115538, 431844, 1464468, 4554040, 13096378,
35069940, 87969166, 207781760, 464351910, 986188668, 998611836, 879505923,
237509223, 15110629, 621334822, 88677622, 257578542, 963016850, 235638961,
442107823, 429101453, 483004748, 329733855, 718448185, 266304376, 413950543,
256286771, 626720357, 318467482, 59069608, 81901162, 352730851, 104241055,
503595237, 956355036, 534522134, 457799859, 108929893, 887297322, 424614770,
265024591, 876853471, 515703045, 692038809, 210906163, 20070317, 468291405,
145357835, 797577421, 232358134, 747771239, 343859985, 833879609, 78548665,
289896769, 449285934, 313197004, 379603290, 397630660, 609910102, 442642726,
627950853, 722186028, 705163253, 998661511, 771071664, 636940611, 1,
17, 168, 1220, 7172, 35852, 157132, 616084,
2192506, 7159090, 21631676, 60902460, 160707468, 399489140, 939796228,
101060910, 481320121, 151453550, 952463061, 931694473, 957528293, 554162053,
990142499, 644946993, 651797781, 791594351, 556120466, 271969917, 107619398,
710253075, 280526462, 615698879, 99748930, 775178221, 257586036, 645364809,
806795120, 340635512, 801741075, 790520661, 68328385, 331513794, 351728404,
931812262, 91105169, 176869824, 445724501, 370449983, 359815736, 918724628,
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628504487, 842750087, 152091477, 889718876, 908002421, 944598446, 656459208,
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655149074, 861896271, 859184013, 992613245, 768042116, 807916959, 335381553,
909568095, 153171069, 827990317, 681893483, 1, 18, 187,
1424, 8764, 45832, 210072, 861400, 3206786, 10957868,
34666130, 102239488, 282743580, 736889224, 817936097, 262532028, 534038590,
412279142, 965109380, 86702267, 846482566, 945052509, 644517943, 548776024,
679330947, 152291502, 882910517, 188127435, 636778925, 902059202, 132531208,
193904122, 893705022, 246193070, 652079051, 958060250, 148697872, 504141990,
371410212, 807466717, 514477363, 565424570, 560794838, 11419155, 215137208,
665710713, 791504234, 359367396, 224050172, 509091270, 125989128, 782600310,
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228877964, 91240846, 430467141, 533029377, 904804693, 373207899, 916503101,
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167972327, 428909487, 373215034, 420008537, 513304383, 874743039, 487193257,
97337408, 532639641, 184378261, 955976093, 1, 19, 207,
1649, 10600, 57852, 276620, 1183172, 4595034, 16384606,
54107670, 166643130, 481442164, 311240781, 381378831, 288429444, 380463632,
370477330, 171662912, 688513797, 626045604, 789881798, 844990830, 70546834,
230422087, 267733218, 970080423, 75064762, 104073936, 888990608, 393490487,
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381999002, 81566974, 255547256, 500580164, 503785886, 874661360, 953064009,
357278689, 416715628, 656421867, 311332859, 849655408, 575613107, 850236831,
533549113, 255339339, 611845477, 501164398, 135987981, 672393680, 678611757,
552403430, 470027818, 333312311, 203812034, 929380798, 133842121, 497262544,
839881753, 29703780, 133717366, 249364505, 959337844, 632980495, 72879056,
356819838, 662140760, 182352973, 260787823, 329159184, 423643610, 488600943,
164109163, 8143787, 184454683, 684285006, 693158498, 382122550, 488552031,
777204359, 564238497, 598675373, 603916585, 720234840, 93182262, 238936257,
486420235, 352604922, 958291193, 880928218, 736558676, 163545641, 189347824,
1, 20, 228, 1896, 12703, 72200, 359348,
1599616, 6465450, 23997032, 82508708, 264654080, 796563486, 260832418,
76986106, 528774007, 854313906, 307546108, 722735109, 61004626, 805619536,
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314416445, 92910833, 135520920, 492052755, 24334887, 643976444, 574388511,
317610455, 122930943, 637889505, 255461238, 950861369, 48876234, 149504663,
198682481, 942670278, 866921314, 563621302, 960474580, 980132644, 624295523,
399490883, 351714973, 945626033, 827908349, 157456205, 481861323, 472454109,
343580291, 683697065, 95059407, 841332348, 464714941, 596887160, 38681949,
757883329, 590303711, 64921694, 730086270, 15240461, 714742087, 32874447,
175996750, 277466516, 788882909, 11880203, 95097385, 778398376, 531252352,
479554466, 557013590, 609738833, 798714176, 859324339, 721484640, 268442938,
861267595, 806087188, 31691029, 950412807, 580575404, 849451646, 691790951,
264837637, 967322620, 365040170, 622467624, 456436788, 658680316, 60575186,
387550026, 215002020, 31349904, 449373833, 559514745, 640364153, 807042078,
450172023, 562637973, 109112418, 545193132, 195217263, 976304283, 1,
21, 250, 2166, 15097, 89189, 461164, 2132144,
8950214, 34503182, 123236828, 410729140, 284813823, 790835929, 594736274,
153822108, 374418504, 157537842, 147846917, 133568389, 483576696, 508616649,
656867821, 84463125, 640047601, 955370715, 182167616, 49108700, 229345632,
795610484, 502493987, 857101031, 142485158, 996679960, 742503997, 723858587,
317526153, 365342533, 250775491, 442738912, 408346120, 881242865, 135363327,
231979623, 347291745, 824934645, 995772018, 164592917, 354883487, 450805745,
963969802, 171006181, 92161176, 169883419, 961669090, 26844445, 393784092,
571606470, 464707158, 34144520, 652396373, 745405475, 202923498, 135935314,
703695236, 776259115, 48310283, 874186699, 219390686, 510394758, 751965065,
418424556, 8781061, 736058807, 674014147, 674780706, 590530540, 4352977,
803825827, 167292329, 541083402, 260679638, 665083995, 939990721, 816665296,
886017767, 669822229, 694816125, 643235536, 937314556, 115942268, 261159535,
687177905, 12245758, 694615643, 977706180, 217949106, 118952653, 898868241,
856650616, 42954342, 330321980, 535121720, 982503521, 719423135, 714354007,
18745970, 333448882, 302037622, 935654015, 778423936, 317991952, 284756555,
504736970, 155871365, 118263505, 797065125, 640838446, 258037348, 34344762,
502389803, 911086550, 1, 22, 273, 2460, 17807,
109158, 585339, 2805752, 12209406, 48792492, 180680070, 624410736,
25734764, 199973794, 977710523, 571365953, 412869707, 328237414, 214863466,
633048751, 257394955, 317735309, 673309005, 193600985, 704135816, 514918834,
650479735, 33606857, 490034801, 698396427, 67986999, 220797055, 218864611,
931163713, 940790978, 675674698, 85542051, 543018292, 61247584, 910803604,
831296179, 923943160, 89478028, 104500393, 161998091, 254912705, 539249258,
547749719, 357852173, 690014841, 206926249, 893887199, 747112232, 382059625,
148865046, 301618706, 260333115, 442306036, 247371284, 782005651, 233300621,
920894203, 317455792, 678639547, 427050277, 482884001, 854060466, 980543322,
860769666, 701293636, 771136168, 670745480, 486701027, 168461356, 848787800,
289825171, 498776317, 33320170, 430165721, 821516580, 115533370, 398776967,
333310602, 563097053, 553134182, 219816464, 216637272, 206027601, 933677337,
925510467, 267639197, 43693887, 486722546, 270929495, 877730912, 261947307,
375318068, 692508932, 989184491, 226696206, 288508969, 739837562, 849035543,
782296408, 273955665, 801085382, 431898190, 935043965, 202752072, 867866169,
151133676, 67940990, 78118516, 742654574, 165553271, 254022475, 668960857,
929973305, 656759571, 877339826, 925206924, 133648890, 623964326, 796176354,
256442424, 844384225, 955053908, 35821657, 33969824, 328610099, 171474448,
265634834, 954990510, 1, 23, 297, 2779, 20859,
132473, 735535, 3649437, 16435370, 67971642, 260491974, 931772466,
129241853, 915880695, 773220207, 21124907, 663657824, 89235883, 562087424,
395633225, 79602143, 818737728, 503346111, 923762587, 810187543, 71950684,
872552891, 722894374, 788701216, 792043650, 839896539, 577542972, 345484502,
350106805, 159630680, 594479078, 806985602, 451202244, 562057157, 345406448,
404888318, 371479292, 122121086, 196184273, 855722413, 625056343, 209132008,
580725504, 234791519, 683270249, 879431955, 820639155, 890517789, 877206124,
780147370, 943542736, 532169988, 134361777, 389279830, 486085405, 212150153,
60309713, 36144061, 220641769, 167907687, 433032241, 672669299, 4840381,
543970499, 860603358, 920463673, 899153827, 269139419, 99866794, 833550296,
732963165, 649634036, 220976898, 948879986, 81746947, 249278044, 943429751,
227240067, 617290217, 857759442, 317672542, 702411387, 392102340, 598392406,
771484657, 20769431, 772211314, 777981688, 103043307, 336611982, 922346108,
46010568, 620920750, 740298345, 143296430, 127113300, 229361025, 452883985,
298773134, 583669967, 430943791, 878469881, 498554889, 377075156, 399618101,
518539100, 610655946, 762624102, 339746521, 193491143, 582788075, 58498274,
139175929, 439487543, 659039143, 969039085, 205473123, 149794944, 735361805,
144310487, 952281582, 885994682, 290034640, 449859219, 870975475, 717604104,
930837761, 466542500, 510501275, 368063612, 61813298, 959329905, 938922014,
660077190, 12025968, 335011033, 657136343, 351072920, 964781583, 196462283,
1, 24, 322, 3124, 24280, 159528, 915834,
4696644, 21857553, 93405656, 369882084, 367190881, 745178532, 541448535,
237690972, 408537702, 191376116, 678513161, 493570976, 397907192, 9101765,
658714208, 122356973, 514532531, 911169029, 6916896, 782796, 910119724,
942560918, 62371227, 773940129, 523667340, 669757203, 42568262, 891666384,
467022993, 486796667, 727294526, 413613585, 787453753, 599953158, 417187968,
359849625, 117069116, 879478181, 12380000, 910899870, 838986319, 102687453,
103327364, 376800830, 429223538, 780159138, 706916356, 587575355, 971169352,
36010810, 483798044, 344462034, 787276711, 359714668, 737585540, 514856433,
506547585, 7966248, 935961, 931790046, 725219981, 437246235, 737823353,
539625329, 101294921, 998345360, 158678756, 14552916, 434899855, 58679632,
771567929, 908041362, 370603042, 958461645, 473954165, 329932246, 645017860,
950250115, 632956030, 39737256, 308287817, 593859369, 848980890, 73354610,
67983312, 794665532, 744501399, 571146358, 79777328, 768540650, 301591668,
87146707, 749547055, 542914952, 113807115, 981646049, 443442346, 689844336,
226785366, 664441023, 644644459, 65534356, 186334852, 433121661, 818953887,
687026114, 344822747, 464015963, 110899493, 294091084, 65199948, 37449794,
719226153, 501099656, 413337315, 725255533, 799293560, 259962068, 954615054,
373654234, 764439094, 914044890, 22085466, 539035590, 698634111, 313016212,
98993468, 941478268, 955683335, 902077766, 420565422, 767959775, 128648986,
355285226, 534029655, 104714136, 932643222, 778200211, 56428536, 225880543,
792355687, 449940761, 181471652, 529937629, 325235521, 6575392, 94094707,
441392085, 37264955, 911557047, 1, 25, 348, 3496,
28098, 190746, 1130768, 5985744, 28747851, 126764795, 517958180,
975500521, 75313899, 914923483, 611051644, 458281681, 932346365, 712529240,
185024083, 463834094, 950836649, 286357381, 871292163, 434939852, 58330077,
629835295, 27932676, 66354549, 10923173, 590226200, 526183672, 176005584,
809584977, 222348292, 260397896, 396327746, 178971085, 774808076, 78650222,
507195902, 144802453, 299847298, 581537053, 724817078, 350425193, 503589319,
654904119, 595937600, 992781673, 82554146, 868891604, 769490422, 119334199,
287573489, 85347169, 118147346, 949694675, 540939467, 927324362, 545027201,
610310429, 769058023, 21423, 262519735, 786795808, 240407039, 428554518,
447092428, 788617633, 367724192, 374279457, 343082569, 856162651, 150954733,
962857235, 700751807, 895999415, 533537747, 537990547, 268357366, 869434038,
633081543, 603452058, 947934680, 987367826, 743179254, 710352935, 835787228,
706586787, 845202323, 238777269, 405136472, 480736674, 155194042, 871452828,
677921910, 616952227, 984554304, 602482844, 894952109, 161534829, 782737895,
850072208, 670793244, 828100052, 222399146, 284700626, 231919567, 306545173,
673216888, 772842480, 314744315, 347738200, 25002680, 730048408, 649455506,
745857274, 196252843, 529935260, 419302767, 276709210, 732855171, 343508231,
624945362, 861002432, 484757974, 367927715, 209929226, 661865936, 531107025,
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587584177, 185414563, 306822687, 841034662, 971868532, 919896238, 158358640,
773475266, 936203252, 665923149, 911486615, 197651366, 774528535, 82937079,
883806524, 130206852, 774201811, 995994000, 245370199, 842572718, 793423605,
740588350, 687616120, 657690139, 857790226, 37323118, 88399209, 523321086,
117621631, 71036645, 222192424, 788926021, 202125596, 1, 26,
375, 3896, 32342, 226580, 1385350, 7560544, 37426495,
170077814, 716127109, 814596482, 388283574, 187079164, 480126707, 290089727,
38629756, 54115650, 64891257, 901599546, 718222041, 911275669, 323565019,
817912019, 805459451, 803612364, 201797073, 732830955, 80380678, 23464457,
701195891, 272214917, 913862649, 132026200, 669751010, 759341231, 973676755,
794065196, 967438659, 308299894, 10712690, 949669597, 781686555, 88559004,
727530543, 318751597, 278470531, 434911202, 804701133, 324324750, 981099143,
232682614, 987104568, 776649739, 786487389, 442468777, 569068005, 663709268,
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908672716, 70204475, 867825588, 827103298, 241630317, 362696969, 415618616,
805038660, 598704556, 10082872, 643477587, 415164213, 703084166, 477367476,
20036406, 629980785, 802614294, 952521645, 17601466, 311433959, 830294700,
548394039, 535645146, 521413012, 929141249, 283365227, 727229980, 443388093,
410708269, 286618040, 319768543, 938841603, 93475597, 394693465, 931196821,
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564305854, 311518869, 856442237, 372745088, 366968335, 813470622, 720542245,
551543931, 596748971, 778551123, 354920979, 984250497, 691689872, 327423759,
52302396, 920309409, 457393341, 162758194, 401889329, 760192486, 361045291,
58998809, 845800809, 8575285, 649668894, 501939170, 542308042, 574502757,
192463535, 690505425, 204738512, 689813836, 483570629, 525148782, 216925832,
952334594, 68584858, 946061868, 229986068, 113082103, 705545851, 563504064,
430610853, 209937938, 608555345, 578039088, 750439353, 944169681, 417934823,
74422181, 960090808, 568355902, 435674968, 894299009, 15861008, 618713868,
509911155, 168869978, 339481775, 369451744, 600513141, 71634326, 781507214,
857107917, 106564183, 736233715, 362800524, 615467708, 519437498, 342065337,
206666492, 505918934, 308299385, 20927738, 106279730, 457391057, 1,
27, 403, 4325, 37042, 267514, 1685106, 9470830,
48268511, 225792189, 978561725, 958557158, 38052071, 919433401, 254995547,
546697380, 704487939, 32839999, 508901654, 551556389, 663564198, 695178769,
814009554, 547143595, 371559020, 945387943, 670094820, 616330760, 976064124,
607380120, 8699769, 998280938, 580008436, 958036252, 912203574, 544195790,
396609897, 954428754, 708902921, 801338681, 431017191, 381717232, 344144422,
131861617, 874277396, 830300192, 596462835, 318671397, 244894238, 904557382,
834593756, 283869037, 697514761, 969250693, 509524190, 913260759, 384371901,
692021356, 509945770, 32685910, 505430483, 907189201, 193340383, 693205397,
603006308, 305262013, 925218957, 968092842, 27052064, 47727228, 477199307,
293774777, 98292616, 663047137, 995897620, 288543890, 998081856, 524487172,
892499155, 556044593, 972323813, 578208602, 933674462, 509188659, 985492681,
986901126, 628028841, 519717277, 311965185, 897395442, 829761538, 9680527,
161715155, 343759581, 402616197, 861303980, 911400557, 358697993, 515548395,
553147014, 892738525, 205604013, 762111690, 442223169, 7841804, 517369986,
84729818, 152655938, 700957258, 898706126, 75157861, 271201265, 543855670,
440588279, 204308612, 236683234, 208667572, 404506592, 809547310, 853106482,
518815458, 16491026, 491832633, 360120645, 923872102, 602086347, 641452842,
18221609, 229080666, 428455406, 569262655, 856993308, 230900297, 490066099,
367669571, 96292417, 52365382, 469261002, 374633464, 900617667, 182287939,
49700390, 796588976, 949085023, 222503562, 658471212, 94278399, 66098044,
72459139, 603916441, 257635815, 234793049, 951525459, 549173423, 938321308,
13662267, 288258509, 65326301, 11071916, 364716823, 929353581, 839483911,
199241395, 29486252, 482468148, 829994735, 370892643, 687560607, 531658704,
568187724, 486108828, 475403750, 227529481, 124500798, 228110006, 56292488,
958873404, 963718586, 481659835, 183136868, 593123751, 622015148, 469053734,
211587807, 928091671, 481375722, 612130911, 134707706, 334981252, 784422204,
712253942, 698883770, 390222722, 25478322, 28778175, 349558455, 616616543,
1, 28, 432, 4784, 42229, 314064, 2036108,
11772944, 61710789, 296841956, 322742117, 501368237, 486564198, 208215103,
787564548, 236938424, 301578523, 866593178, 461034739, 153403692, 741061604,
268366308, 41671958, 999969805, 820629183, 540097933, 348143198, 290585123,
709901036, 830657214, 397773343, 205345230, 80836479, 744283025, 767371096,
13280133, 166091858, 688213267, 405245759, 999129285, 957885801, 125598090,
229197648, 232621259, 771781842, 15692966, 623498734, 209019752, 451480479,
405116698, 905232949, 522429827, 160392239, 911337480, 463779522, 870625842,
997849245, 364479050, 834828, 300785526, 10186705, 265101999, 566806573,
614983712, 685595755, 48653250, 344390997, 673637797, 896886255, 108856368,
31386606, 486989879, 489263782, 517653845, 976993581, 117774221, 829510874,
294191687, 233225993, 831800739, 448583977, 657291524, 649603801, 456575978,
536862581, 855051723, 994222346, 302476269, 502749737, 322446053, 790323255,
357338908, 887312147, 181428924, 536100952, 55330164, 160205355, 190454705,
365581727, 201998030, 826748536, 400273437, 624522779, 849319472, 800147953,
80982274, 447705256, 168185200, 97822479, 309878269, 678607548, 912097410,
927785144, 334246635, 662138658, 715198385, 260363473, 461374975, 89468114,
651175074, 575096135, 130470890, 71518840, 879845193, 486812125, 128678982,
647847215, 49005945, 59417027, 550597313, 85275582, 589669875, 488581288,
579391253, 238935007, 307933774, 801626662, 991248834, 831660242, 2289249,
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899399938, 781528108, 656359733, 551706967, 845829828, 900357325, 1,
31, 525, 6351, 61037, 493071, 3466221, 21705119,
123102861, 640304911, 83941000, 859775332, 485271727, 929183599, 393442380,
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558277910, 169666679, 941915597, 277380477, 270070849, 652088255, 549544085,
1, 34, 627, 8224, 85440, 744480, 5635892,
37957128, 231322416, 291965329, 678229698, 199102832, 733159273, 432255582,
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235424755, 214797729, 595578763, 703649058, 668639597, 273743575, 830864733,
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860541096, 181038883, 995121568, 787161997, 984175916, 994855981, 70309595,
279951259, 412871815, 881913054, 268261177, 575207129, 196951994, 610045829,
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320572966, 375535061, 712736750, 146215080, 296045377, 892271196, 198915619,
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312111610, 862313776, 36444206, 491509332, 899038496, 494299749, 577210085,
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759497678, 646978177, 833527505, 472805550, 754214240, 960030895, 232746388,
490616131, 420542303, 904038549, 210637836, 74285318, 144447351, 742135765,
244372617, 87595635, 852731251, 594678505, 794681848, 228154101, 363702627,
673985808, 239196945, 836249623, 602064792, 462168907, 430511049, 331217937,
84426505, 529390112, 953694258, 768941491, 296949641, 617567965, 759210871,
554347066, 314959464, 855978152, 459336095, 416019714, 554419893, 643616814,
307318600, 193723511, 342506504, 737708842, 961578294, 644413804, 283651295,
449519877, 262823100, 438065978, 195660179, 15479674, 929627357, 712657286,
867475048, 618979059, 615899609, 290553872, 46585860, 675146342, 899293157,
138576244, 932939832, 413352510, 228638502, 577046541, 52412367, 271101119,
704058715, 716195674, 113738084, 976781966, 417637854, 201849275, 137988263,
703452509, 833173534, 774723430, 98520292, 647910333, 702073064, 101667724,
93613248, 4773372, 993672667, 598539625, 298728331, 547262186, 609550837,
42278975, 203431476, 764589375, 791435299, 273439277, 15186943, 247517820,
332116413, 672582410, 88991345, 573172714, 370502342, 495515460, 486357723,
529038430, 112617630, 9655079, 54905538, 630913486, 94540925, 694069860,
101033114, 601510215, 405093272, 877399916, 606786230, 712700446, 365826653,
440611748, 222502187, 628732942, 260127071, 415183336, 331627148, 603111841,
484627861, 252203062, 603610758, 918118836, 775502591, 558836403, 458735214,
903545723, 229008632, 239177179, 70767308, 751925156, 652119146, 980361868,
450630793, 63075950, 714904102, 795480239, 196855664, 446357279, 343343138,
751184330, 353543327, 265335039, 291055365, 141693974, 952501609, 772988967,
982806649, 295006336, 142133453, 389243658, 551050114, 837354729, 288032982,
926886748, 940810321, 996269340, 544323652, 123254721, 449847916, 164321665,
408440169, 540527971, 235735087, 384560805, 888470688, 711171300, 414716347,
219479361, 559050803, 610845133, 321258507, 296543705, 253557800, 771631909,
466270561, 966519146, 100544233, 474799959, 147649345, 956135303, 808272257,
279282920, 472357219, 422709994, 530025514, 999788009, 64593897, 709199531,
479060735, 311654131, 943520011, 427742758, 799287390, 782392773, 191335024,
830990096, 336010037, 237942831, 237453992, 695887098, 398366572, 529644737,
344086296, 862051533, 684436865, 317549101, 968659087, 366641438, 1,
49, 1272, 23124, 329180, 3895908, 39783804, 359447204,
925733384, 746545659, 165655001, 158091124, 719304162, 111160209, 171158550,
935012406, 874008903, 988755604, 608336289, 351327718, 211049418, 970686245,
441380023, 920727544, 396494781, 218114186, 934368772, 753990221, 203263446,
488226646, 946324350, 642441651, 816607227, 122420091, 629716118, 498106515,
488881569, 100763230, 814241373, 430998026, 986590664, 188596813, 238499794,
887765759, 719310391, 819612870, 840885905, 584773429, 811468143, 396065785,
368868801, 299761844, 617462619, 308704442, 206242421, 833439007, 106715469,
970135543, 972244832, 66232618, 207050932, 577078708, 955731123, 103929249,
632790957, 297717977, 280927805, 856143814, 140717794, 889342899, 570959166,
553036683, 311778062, 833874032, 321035571, 629235909, 60666525, 19636232,
889773198, 837811568, 283828621, 499062871, 459250525, 468391935, 389843786,
80632526, 462481073, 859711240, 66143264, 831825780, 518914304, 998480225,
496960804, 480385724, 483317701, 923742113, 771054094, 630267330, 478946945,
527928962, 674723787, 882998613, 123711144, 324674723, 964132061, 961988031,
65215295, 858250635, 924300325, 577545014, 241841560, 172586320, 726876085,
210684082, 897202470, 742850020, 161301259, 120853804, 344539574, 836860211,
667275920, 72688787, 930704832, 179668299, 861726583, 168665810, 834696469,
672920894, 419563732, 302874180, 454615268, 934181182, 119694911, 779976833,
216225187, 244379028, 586838513, 942544272, 397970796, 155525782, 435250288,
609294947, 697035870, 790138207, 313089121, 451259481, 904475234, 15500998,
428233316, 352796372, 805867626, 355791012, 191743365, 390372515, 86113794,
224579645, 34292553, 472538607, 244805809, 799547326, 350596592, 550928379,
248605526, 858957317, 809083222, 418025439, 717379009, 843111164, 748566980,
795763411, 344249103, 246799165, 468081584, 533360568, 97839725, 814208152,
370784820, 149643652, 648814350, 586462723, 179226570, 323415874, 413399345,
830824722, 901264775, 785155020, 673315179, 883230707, 320461657, 209574161,
896187167, 641537195, 580708044, 615201169, 907420567, 226969633, 44823693,
653925850, 618905940, 556249274, 683808190, 595045606, 406684866, 817926872,
498013040, 741888764, 255307898, 750076370, 226664326, 45791371, 138249186,
182084615, 925519009, 32002450, 507648904, 36302093, 164244320, 134446595,
176304234, 443232913, 204696272, 377207389, 330407781, 317016375, 255990328,
346121343, 776903928, 865285835, 180645765, 94169320, 523805568, 66571932,
958229276, 706032441, 157122799, 174128102, 265560802, 960871567, 814597354,
840895548, 702037, 848074074, 17426708, 276377856, 55696613, 206160180,
32721003, 453495162, 587538197, 204676036, 610254246, 936113705, 842825687,
202272844, 145230437, 624393323, 739106533, 700708897, 523328161, 691038973,
656087189, 213848962, 927815456, 921255504, 609475698, 113463094, 529085932,
807792149, 579407091, 163833313, 694176222, 471399591, 346973697, 718259544,
297359882, 892552532, 451373341, 120883534, 8029910, 624607649, 606649877,
815313728, 231664869, 673443919, 615486405, 94571095, 110823650, 950289120,
646876432, 928906934, 684469503, 297251947, 919054473, 285157267, 967739040,
274416446, 465229888, 656873003, 825576691, 53305194, 539107135, 609069516,
669008004, 585520763, 526072937, 91836656, 101778461, 538228891, 424599066,
719851020, 234795290, 701214554, 914481398, 497763115, 504286064, 212679726,
409710596, 134500525, 154608785, 554889670, 267547678, 851784437, 749366191,
681515762, 587313005, 604179607, 297539881, 51380469, 30897443, 988568867,
430543091, 168358864, 325894509, 131217074, 122226126, 289735266, 2541560,
697428098, 339809826, 339814711, 568813016, 256466301, 865405619, 710940331,
7424767, 660900037, 729644940, 444, 450105203, 690939247, 459755659,
92556107, 42398758, 782901298, 483436309, 73995240, 784415989, 602791285,
655683750, 744368335, 684929720, 939318197, 1937536, 94209990, 544006669,
195169186, 297173575, 151918090, 559870646, 425964491, 818978660, 571568643,
60393204, 415731654, 547756555, 991386612, 383053326, 997830526, 963081859,
107336308, 898219937, 906988404, 550036125, 981857264, 691293427, 481189647,
501756531, 316529056, 476096058, 168221459, 165690115, 553028411, 960794528,
453386272, 963889156, 71983103, 494867184, 462967097, 635240847, 989817132,
23786457, 968645733, 163475174, 884798755, 971346358, 8231228, 947835970,
751371876, 21594745, 702982989, 997528759, 30899466, 874470660, 839706683,
64336797, 183002010, 415355406, 851375333, 802315034, 662347966, 459017349,
83113197, 807783874, 686211775, 665742332, 548408223, 38712773, 947065654,
224142524, 544199777, 554457822, 161813447, 59932464, 324817969, 826816639,
159675767, 610260222, 802832692, 962264291, 230527850, 654881259, 493134625,
56109407, 491401533, 163680598, 892934948, 889185132, 78662275, 741528574,
616484511, 204394884, 120980232, 4959172, 884202370, 468625389, 987185268,
797914336, 292935354, 542176515, 965256954, 25044127, 701524209, 669825969,
264620823, 983915826, 463815578, 325409981, 142164710, 946513145, 626025918,
890502327, 456729879, 921471703, 889764153, 10834930, 550258959, 888111963,
456661896, 560525119, 254574198, 379302005, 359197537, 748972811, 432885247,
174603143, 495215302, 304225805, 499574, 89067439, 956588800, 479903186,
900293862, 918419160, 874312513, 779518268, 750190343, 34999197, 204187488,
29703716, 310295240, 212734818, 705461990, 880565621, 542764103, 578132976,
871657196, 920555643, 635330221, 603836039, 905337022, 446003049, 531829391,
914627500, 109964459, 793773872, 883594493, 588890899, 761763418, 850946563,
47045637, 406265955, 398330580, 175033998, 98562597, 74022406, 109783010,
888406279, 62923507, 851720727, 920064661, 659715101, 731241623, 740764931,
68490942, 26861674, 832409630, 156628069, 65837301, 277330611, 504531610,
621094682, 513712789, 824543274, 863846088, 522929299, 50674845, 205053841,
391074024, 703020653, 598865065, 977680558, 126857946, 571772915, 596794646,
195429545, 328266420, 36051456, 451216030, 522276964, 948367998, 561406981,
389510759, 585943971, 108053297, 459413669, 288907310, 136029766, 802792879,
520247265, 414339912, 337619243, 597859489, 40005835, 350918, 321070418,
199829979, 141119131, 515535428, 350920730, 314377413, 808898947, 900198037,
799762368, 570476717, 244997759, 402733111, 626061442, 103647198, 938528989,
898060580, 652361018, 641847472, 149112119, 134262079, 887185896, 606038263,
859408453, 950373236, 692335861, 405660442, 565431386, 959094106, 393940636,
423632434, 612413824, 143336067, 663257107, 9730523, 471491852, 112828340,
936303905, 998673093, 55233966, 416039620, 144081002, 565258672, 539355694,
202448366, 14002378, 539019751, 307827209, 288622328, 788194350, 570120788,
965430343, 472467292};
signed main() {
int n, k;
cin >> n >> k;
if (k % 2 == 1 || n == 0 || k > (n / 2) * (n + 1))
cout << 0 << endl;
else
cout << ans[pos[n - 1] + k / 2] << endl;
return 0;
}
| replace | 1,559 | 1,560 | 1,559 | 1,560 | 0 | |
p02975 | Python | Runtime Error | import sys
from collections import Counter
N = int(input())
C = Counter(list(map(int, input().split())))
if len(C) == 1 and C[0] == N:
print("Yes")
elif len(C) == 2 and N % 3 == 0 and C[0] == N // 3 and N - [0] == 2 * N // 3:
print("Yes")
elif len(C) == 3 and N % 3 == 0:
b = 0
for c in C.most_common():
if c[1] != N // 3:
print("No")
sys.exit()
b ^= c[0]
if b == 0:
print("Yes")
else:
print("No")
else:
print("No")
| import sys
from collections import Counter
N = int(input())
C = Counter(list(map(int, input().split())))
if len(C) == 1 and C[0] == N:
print("Yes")
elif len(C) == 2 and N % 3 == 0 and C[0] == N // 3 and N - C[0] == 2 * N // 3:
print("Yes")
elif len(C) == 3 and N % 3 == 0:
b = 0
for c in C.most_common():
if c[1] != N // 3:
print("No")
sys.exit()
b ^= c[0]
if b == 0:
print("Yes")
else:
print("No")
else:
print("No")
| replace | 7 | 8 | 7 | 8 | 0 | |
p02975 | Python | Runtime Error | from collections import defaultdict
n = int(input())
a = tuple(map(int, input().split()))
can = True
if n % 3 == 0:
d = defaultdict(int)
for aa in a:
d[aa] += 1
m = n // 3
t = []
for number, cnt in d.items():
if cnt % m != 0:
can = False
break
else:
for _ in range(cnt // m):
t.append(number)
# print(t)
if any(t[(0 + i) % 3] ^ t[(1 + i) % 3] != t[(2 + i) % 3] for i in range(3)):
can = False
else:
if any(aa != 0 for aa in a):
can = False
print("Yes" if can else "No")
| from collections import defaultdict
n = int(input())
a = tuple(map(int, input().split()))
can = True
if n % 3 == 0:
d = defaultdict(int)
for aa in a:
d[aa] += 1
m = n // 3
t = []
for number, cnt in d.items():
if cnt % m != 0:
can = False
break
else:
for _ in range(cnt // m):
t.append(number)
else:
if any(t[(0 + i) % 3] ^ t[(1 + i) % 3] != t[(2 + i) % 3] for i in range(3)):
can = False
else:
if any(aa != 0 for aa in a):
can = False
print("Yes" if can else "No")
| replace | 20 | 23 | 20 | 23 | 0 | |
p02975 | C++ | Runtime Error | #pragma comment(linker, "/stack:200000000")
#pragma GCC optimize("Ofast")
#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native")
#include <bits/stdc++.h>
using namespace std;
#define MP make_pair
#define ALL(x) (x).begin(), (x).end()
#define SZ(x) (int((x.size())))
#define fi first
#define se second
#define REP(i, a, n) for (int(i) = (a); (i) < (n); (i)++)
#define PER(i, a, n) for (int(i) = (n)-1; (i) >= (a); (i)--)
typedef long double ld;
typedef long long ll;
typedef vector<int> VI;
typedef pair<int, int> PII;
typedef pair<ll, ll> PLL;
typedef vector<ll> VL;
typedef vector<PLL> VPL;
typedef vector<PII> VPI;
// #ifndef ONLINE_JUDGE
#define dbb(x) \
{ cerr << #x << " = " << x << "\t"; }
#define db(x) \
{ \
dbb(x); \
cerr << endl; \
}
#define db2(x, y) \
{ \
dbb(x); \
dbb(y); \
cerr << endl; \
}
#define db3(x, y, z) \
{ \
dbb(x); \
dbb(y); \
dbb(z); \
cerr << endl; \
}
// #else
// #define dbb(x) ;
// #define db(x) ;
// #define db2(x,y) ;
// #define db3(x,y,z) ;
// #endif
const ll MOD = 1000000007ll;
ll powmod(ll a, ll b) {
ll res = 1;
a %= MOD;
assert(b >= 0);
for (; b; b >>= 1) {
if (b & 1)
res = res * a % MOD;
a = a * a % MOD;
}
return res;
}
template <typename t1, typename t2> inline bool upmax(t1 &a, t2 b) {
if (a < (t1)b) {
a = (t1)b;
return true;
} else
return false;
}
template <typename t1, typename t2> inline bool upmin(t1 &a, t2 b) {
if (a > (t1)b) {
a = (t1)b;
return true;
} else
return false;
}
template <typename T> inline T gcd(T a, T b) { return b ? gcd(b, a % b) : a; }
template <typename T> inline T lcm(T a, T b) { return a * (b / gcd(a, b)); }
template <typename T> inline T sqr(T a) { return a * a; }
int dx[] = {1, 0, -1, 0, 1, 1, -1, -1};
int dy[] = {0, 1, 0, -1, 1, -1, 1, -1};
int dkx[] = {-1, -1, 1, 1, -2, -2, 2, 2};
int dky[] = {-2, 2, -2, 2, -1, 1, -1, 1};
const int INF = 1000000404;
const ll LINF = 1e18 * (1ll);
const ld PI = 3.14159265358979323846;
const ld EPS = 1e-9;
const int SQ = 318;
int timer = 0;
#define N 100100
int a[N];
void solve() {
int n;
cin >> n;
map<int, int> cnt;
REP(i, 0, n) {
cin >> a[i];
cnt[a[i]]++;
}
sort(a, a + n);
if (a[n - 1] == 0) {
cout << "Yes";
return;
}
int A = a[0];
int B = a[n / 2];
int C = a[n - 1];
if (n % 3 == 0 && SZ(cnt) == 2) {
if (A == 0 && cnt[A] == n / 3 && cnt[B] == 2 * n / 3) {
cout << "Yes" << endl;
return;
}
}
if (n % 3 == 0 && SZ(cnt) == 3) {
if (cnt[A] == cnt[B] && cnt[B] == cnt[C] && cnt[A] == n / 3) {
if ((A ^ B) == C || (A ^ C) == B) {
cout << "Yes" << endl;
return;
}
}
}
cout << "No";
}
int main() {
#ifndef ONLINE_JUDGE
freopen("input.txt", "r", stdin);
freopen("output.txt", "w", stdout);
#else
// freopen("mantan.in", "r", stdin);
// freopen("mantan.out", "w", stdout);
#endif
ios_base::sync_with_stdio(false);
cin.tie(0);
cout.tie(0);
int t = 1;
// cin >> t;
for (int i = 1; i <= t; i++) {
solve();
}
return 0;
} | #pragma comment(linker, "/stack:200000000")
#pragma GCC optimize("Ofast")
#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native")
#include <bits/stdc++.h>
using namespace std;
#define MP make_pair
#define ALL(x) (x).begin(), (x).end()
#define SZ(x) (int((x.size())))
#define fi first
#define se second
#define REP(i, a, n) for (int(i) = (a); (i) < (n); (i)++)
#define PER(i, a, n) for (int(i) = (n)-1; (i) >= (a); (i)--)
typedef long double ld;
typedef long long ll;
typedef vector<int> VI;
typedef pair<int, int> PII;
typedef pair<ll, ll> PLL;
typedef vector<ll> VL;
typedef vector<PLL> VPL;
typedef vector<PII> VPI;
// #ifndef ONLINE_JUDGE
#define dbb(x) \
{ cerr << #x << " = " << x << "\t"; }
#define db(x) \
{ \
dbb(x); \
cerr << endl; \
}
#define db2(x, y) \
{ \
dbb(x); \
dbb(y); \
cerr << endl; \
}
#define db3(x, y, z) \
{ \
dbb(x); \
dbb(y); \
dbb(z); \
cerr << endl; \
}
// #else
// #define dbb(x) ;
// #define db(x) ;
// #define db2(x,y) ;
// #define db3(x,y,z) ;
// #endif
const ll MOD = 1000000007ll;
ll powmod(ll a, ll b) {
ll res = 1;
a %= MOD;
assert(b >= 0);
for (; b; b >>= 1) {
if (b & 1)
res = res * a % MOD;
a = a * a % MOD;
}
return res;
}
template <typename t1, typename t2> inline bool upmax(t1 &a, t2 b) {
if (a < (t1)b) {
a = (t1)b;
return true;
} else
return false;
}
template <typename t1, typename t2> inline bool upmin(t1 &a, t2 b) {
if (a > (t1)b) {
a = (t1)b;
return true;
} else
return false;
}
template <typename T> inline T gcd(T a, T b) { return b ? gcd(b, a % b) : a; }
template <typename T> inline T lcm(T a, T b) { return a * (b / gcd(a, b)); }
template <typename T> inline T sqr(T a) { return a * a; }
int dx[] = {1, 0, -1, 0, 1, 1, -1, -1};
int dy[] = {0, 1, 0, -1, 1, -1, 1, -1};
int dkx[] = {-1, -1, 1, 1, -2, -2, 2, 2};
int dky[] = {-2, 2, -2, 2, -1, 1, -1, 1};
const int INF = 1000000404;
const ll LINF = 1e18 * (1ll);
const ld PI = 3.14159265358979323846;
const ld EPS = 1e-9;
const int SQ = 318;
int timer = 0;
#define N 100100
int a[N];
void solve() {
int n;
cin >> n;
map<int, int> cnt;
REP(i, 0, n) {
cin >> a[i];
cnt[a[i]]++;
}
sort(a, a + n);
if (a[n - 1] == 0) {
cout << "Yes";
return;
}
int A = a[0];
int B = a[n / 2];
int C = a[n - 1];
if (n % 3 == 0 && SZ(cnt) == 2) {
if (A == 0 && cnt[A] == n / 3 && cnt[B] == 2 * n / 3) {
cout << "Yes" << endl;
return;
}
}
if (n % 3 == 0 && SZ(cnt) == 3) {
if (cnt[A] == cnt[B] && cnt[B] == cnt[C] && cnt[A] == n / 3) {
if ((A ^ B) == C || (A ^ C) == B) {
cout << "Yes" << endl;
return;
}
}
}
cout << "No";
}
int main() {
#ifndef ONLINE_JUDGE
#else
// freopen("mantan.in", "r", stdin);
// freopen("mantan.out", "w", stdout);
#endif
ios_base::sync_with_stdio(false);
cin.tie(0);
cout.tie(0);
int t = 1;
// cin >> t;
for (int i = 1; i <= t; i++) {
solve();
}
return 0;
} | replace | 146 | 148 | 146 | 147 | -11 | |
p02975 | C++ | Time Limit Exceeded | #define _CRT_SECURE_NO_WARNINGS
#include <bits/stdc++.h>
#include <unordered_map>
#define LL long long
using namespace std;
#define MAXN 200005
#define pp 1000000007
// set<int> s;
unordered_map<int, int> m;
int nums[MAXN];
int main() {
int n;
bool flag = true;
scanf("%d", &n);
for (int i = 0; i < n; i++) {
scanf("%d", &nums[i]);
if (m.find(nums[i]) == m.end())
m.insert({nums[i], 1});
else {
m[nums[i]]++;
}
// s.insert(nums[i]);
if (nums[i] != 0)
flag = false;
}
if (flag) {
printf("Yes");
return 0;
}
int ans = 0;
if (n > 3) {
if (n % 3 == 0) {
if (m.size() > 3) {
printf("No");
return 0;
} else {
for (auto i : m) {
while (i.second != 0) {
ans ^= i.first;
i.second -= n / 3;
}
}
}
if (ans == 0) {
printf("Yes");
return 0;
} else {
printf("No");
return 0;
}
} else {
printf("No");
return 0;
}
} else {
if ((nums[0] ^ nums[1]) == nums[2]) {
printf("Yes");
return 0;
} else {
printf("No");
return 0;
}
}
return 0;
} | #define _CRT_SECURE_NO_WARNINGS
#include <bits/stdc++.h>
#include <unordered_map>
#define LL long long
using namespace std;
#define MAXN 200005
#define pp 1000000007
// set<int> s;
unordered_map<int, int> m;
int nums[MAXN];
int main() {
int n;
bool flag = true;
scanf("%d", &n);
for (int i = 0; i < n; i++) {
scanf("%d", &nums[i]);
if (m.find(nums[i]) == m.end())
m.insert({nums[i], 1});
else {
m[nums[i]]++;
}
// s.insert(nums[i]);
if (nums[i] != 0)
flag = false;
}
if (flag) {
printf("Yes");
return 0;
}
int ans = 0;
if (n > 3) {
if (n % 3 == 0) {
if (m.size() > 3) {
printf("No");
return 0;
} else {
for (auto i : m) {
while (i.second != 0) {
ans ^= i.first;
i.second -= n / 3;
if (i.second < 0) {
printf("No");
return 0;
}
}
}
}
if (ans == 0) {
printf("Yes");
return 0;
} else {
printf("No");
return 0;
}
} else {
printf("No");
return 0;
}
} else {
if ((nums[0] ^ nums[1]) == nums[2]) {
printf("Yes");
return 0;
} else {
printf("No");
return 0;
}
}
return 0;
} | insert | 44 | 44 | 44 | 48 | TLE | |
p02975 | C++ | Runtime Error | #include <bits/stdc++.h>
using namespace std;
int n;
int a[300001];
int b[100001];
int main() {
scanf("%d", &n);
for (int i = 1; i <= n; i++)
scanf("%d", &a[i]);
int k = 1;
sort(a + 1, a + 1 + n);
a[n + 1] = -2;
for (int i = 1; a[i + 1] != -2 && i < 300001; i++)
if (a[i] == a[i + 1]) {
a[n + k] = a[i];
a[i] = -1;
a[n + k + 1] = -2;
k++;
}
for (int i = 1, j = 1; i <= n; i++) {
while (a[j] == -1)
j++;
b[i] = a[j];
j++;
}
int flag = 0;
for (int i = 1; i + 2 <= n; i++)
if ((b[i] ^ b[i + 1]) != b[i + 2]) {
flag = 1;
break;
}
if ((b[n - 1] ^ b[n]) != b[1]) {
flag = 1;
}
if (flag)
printf("No\n");
else
printf("Yes\n");
return 0;
}
| #include <bits/stdc++.h>
using namespace std;
int n;
int a[300001];
int b[100001];
int main() {
scanf("%d", &n);
for (int i = 1; i <= n; i++)
scanf("%d", &a[i]);
int s = 0;
for (int i = 1; i <= n; i++)
s = s ^ a[i];
if (s)
printf("No\n");
else
printf("Yes\n");
return 0;
}
| replace | 12 | 38 | 12 | 16 | 0 | |
p02975 | C++ | Runtime Error | #include <bits/stdc++.h>
#include <queue>
#include <stack>
using namespace std;
typedef pair<long long int, long long int> pa;
#define resize(A) A.resize(unique(A.begin(), A.end()) - A.begin())
#define pb push_back
#define MAX 200005
long long int MOD = 1e9 + 7;
long long int INF = 1e18;
int main() {
ios_base::sync_with_stdio(false);
cin.tie(NULL);
cout.tie(NULL);
long long int i, j, k = 0, l = 0, r = 0, m = 0, n, p = 0, cnt = 0, cnt1 = 0,
x, y, z = 0, a, b, low, mid, high, ans = 0, maxi = 0,
mini = INF, t;
cin >> n;
long long int A[n];
map<long long int, long long int> ma;
map<long long int, long long int>::iterator it;
for (i = 0; i < n; i++) {
cin >> A[i];
ma[A[i]]++;
if (A[i] == 0)
cnt++;
}
if (cnt == n)
cout << "Yes\n";
else if (n % 3 == 0) {
if (ma.size() == 2) {
r = n / 3;
vector<pa> V;
for (it = ma.begin(); it != ma.end(); it++) {
V.push_back({it->second, it->first});
}
sort(V.begin(), V.end());
if (V[1].first == 2 * r && V[i].second == 0) {
cout << "Yes\n";
} else
cout << "No\n";
} else if (ma.size() == 3) {
r = n / 3;
vector<pa> V;
for (it = ma.begin(); it != ma.end(); it++) {
V.push_back({it->second, it->first});
}
sort(V.begin(), V.end());
k = 0;
k = k ^ V[0].second ^ V[1].second ^ V[2].second;
if (V[0].first == r && V[1].first == r && V[2].first == r && k == 0) {
cout << "Yes\n";
} else
cout << "No\n";
} else
cout << "No\n";
} else
cout << "No\n";
} | #include <bits/stdc++.h>
#include <queue>
#include <stack>
using namespace std;
typedef pair<long long int, long long int> pa;
#define resize(A) A.resize(unique(A.begin(), A.end()) - A.begin())
#define pb push_back
#define MAX 200005
long long int MOD = 1e9 + 7;
long long int INF = 1e18;
int main() {
ios_base::sync_with_stdio(false);
cin.tie(NULL);
cout.tie(NULL);
long long int i, j, k = 0, l = 0, r = 0, m = 0, n, p = 0, cnt = 0, cnt1 = 0,
x, y, z = 0, a, b, low, mid, high, ans = 0, maxi = 0,
mini = INF, t;
cin >> n;
long long int A[n];
map<long long int, long long int> ma;
map<long long int, long long int>::iterator it;
for (i = 0; i < n; i++) {
cin >> A[i];
ma[A[i]]++;
if (A[i] == 0)
cnt++;
}
if (cnt == n)
cout << "Yes\n";
else if (n % 3 == 0) {
if (ma.size() == 2) {
r = n / 3;
vector<pa> V;
for (it = ma.begin(); it != ma.end(); it++) {
V.push_back({it->second, it->first});
}
sort(V.begin(), V.end());
if (V[1].first == 2 * r && V[0].second == 0) {
cout << "Yes\n";
} else
cout << "No\n";
} else if (ma.size() == 3) {
r = n / 3;
vector<pa> V;
for (it = ma.begin(); it != ma.end(); it++) {
V.push_back({it->second, it->first});
}
sort(V.begin(), V.end());
k = 0;
k = k ^ V[0].second ^ V[1].second ^ V[2].second;
if (V[0].first == r && V[1].first == r && V[2].first == r && k == 0) {
cout << "Yes\n";
} else
cout << "No\n";
} else
cout << "No\n";
} else
cout << "No\n";
} | replace | 41 | 42 | 41 | 42 | 0 | |
p02975 | C++ | Runtime Error | /*Lucky_Glass*/
#include <algorithm>
#include <cstdio>
#include <cstring>
#include <map>
using namespace std;
const int N = 8e4;
int cas, n;
long long A[N + 3];
map<long long, int> cnt;
bool Solve2() {
int stk[5] = {}, nstk = 0;
for (map<long long, int>::iterator it = cnt.begin(); it != cnt.end(); it++) {
if (it->second != n / 3 * 2 && it->second != n / 3)
return false;
if (it->second == n / 3 * 2)
stk[++nstk] = it->first, stk[++nstk] = it->first;
else
stk[++nstk] = it->first;
}
sort(stk + 1, stk + 4);
do {
if ((stk[3] ^ stk[1]) == stk[2] && (stk[1] ^ stk[2]) == stk[3] &&
(stk[2] ^ stk[3]) == stk[1])
return true;
} while (next_permutation(stk + 1, stk + 4));
return false;
}
bool Solve3() {
int stk[5] = {}, nstk = 0;
for (map<long long, int>::iterator it = cnt.begin(); it != cnt.end(); it++) {
if (it->second != n / 3)
return false;
stk[++nstk] = it->first;
}
sort(stk + 1, stk + 4);
do {
if ((stk[3] ^ stk[1]) == stk[2] && (stk[1] ^ stk[2]) == stk[3] &&
(stk[2] ^ stk[3]) == stk[1])
return true;
} while (next_permutation(stk + 1, stk + 4));
return false;
}
int main() {
// freopen("circle.in","r",stdin);
// freopen("circle.out","w",stdout);
// scanf("%d",&cas);
cas = 1;
while (cas--) {
cnt.clear();
scanf("%d", &n);
// bool fail=false;
for (int i = 1; i <= n; i++) {
scanf("%lld", &A[i]);
cnt[A[i]]++;
}
if (cnt.size() > 3) {
printf("No\n");
continue;
}
switch (cnt.size()) {
case 1:
if (cnt.begin()->first == 0)
printf("Yes\n");
else
printf("No\n");
break;
case 2:
printf("%s\n", Solve2() ? "Yes" : "No");
break;
case 3:
printf("%s\n", Solve3() ? "Yes" : "No");
break;
}
}
return 0;
}
/*
15: 001111
24: 011000
44: 101100
15 * 10
24 * 10
15 24 15 24 44 44 24 24 15 44 44 15 15 44 15 15 15 24 44 24 44 44 44 24 24 24 15
24 15 44
*/ | /*Lucky_Glass*/
#include <algorithm>
#include <cstdio>
#include <cstring>
#include <map>
using namespace std;
const int N = 1e5;
int cas, n;
long long A[N + 3];
map<long long, int> cnt;
bool Solve2() {
int stk[5] = {}, nstk = 0;
for (map<long long, int>::iterator it = cnt.begin(); it != cnt.end(); it++) {
if (it->second != n / 3 * 2 && it->second != n / 3)
return false;
if (it->second == n / 3 * 2)
stk[++nstk] = it->first, stk[++nstk] = it->first;
else
stk[++nstk] = it->first;
}
sort(stk + 1, stk + 4);
do {
if ((stk[3] ^ stk[1]) == stk[2] && (stk[1] ^ stk[2]) == stk[3] &&
(stk[2] ^ stk[3]) == stk[1])
return true;
} while (next_permutation(stk + 1, stk + 4));
return false;
}
bool Solve3() {
int stk[5] = {}, nstk = 0;
for (map<long long, int>::iterator it = cnt.begin(); it != cnt.end(); it++) {
if (it->second != n / 3)
return false;
stk[++nstk] = it->first;
}
sort(stk + 1, stk + 4);
do {
if ((stk[3] ^ stk[1]) == stk[2] && (stk[1] ^ stk[2]) == stk[3] &&
(stk[2] ^ stk[3]) == stk[1])
return true;
} while (next_permutation(stk + 1, stk + 4));
return false;
}
int main() {
// freopen("circle.in","r",stdin);
// freopen("circle.out","w",stdout);
// scanf("%d",&cas);
cas = 1;
while (cas--) {
cnt.clear();
scanf("%d", &n);
// bool fail=false;
for (int i = 1; i <= n; i++) {
scanf("%lld", &A[i]);
cnt[A[i]]++;
}
if (cnt.size() > 3) {
printf("No\n");
continue;
}
switch (cnt.size()) {
case 1:
if (cnt.begin()->first == 0)
printf("Yes\n");
else
printf("No\n");
break;
case 2:
printf("%s\n", Solve2() ? "Yes" : "No");
break;
case 3:
printf("%s\n", Solve3() ? "Yes" : "No");
break;
}
}
return 0;
}
/*
15: 001111
24: 011000
44: 101100
15 * 10
24 * 10
15 24 15 24 44 44 24 24 15 44 44 15 15 44 15 15 15 24 44 24 44 44 44 24 24 24 15
24 15 44
*/ | replace | 7 | 8 | 7 | 8 | 0 | |
p02975 | C++ | Runtime Error | #include <bits/stdc++.h>
#define MAXN 10000
using namespace std;
typedef long long ll;
int main() {
// freopen("t.txt","r",stdin);
int n;
cin >> n;
int a[10002];
for (int i = 1; i <= n; i++)
cin >> a[i];
int t = a[1], kq;
for (int i = 2; i <= n; i++) {
t = t ^ a[i];
}
if (t == 0) {
cout << "Yes";
return 0;
}
cout << "No";
return 0;
} | #include <bits/stdc++.h>
#define MAXN 10000
using namespace std;
typedef long long ll;
int main() {
// freopen("t.txt","r",stdin);
int n;
cin >> n;
int a[100002];
for (int i = 1; i <= n; i++)
cin >> a[i];
int t = a[1], kq;
for (int i = 2; i <= n; i++) {
t = t ^ a[i];
}
if (t == 0) {
cout << "Yes";
return 0;
}
cout << "No";
return 0;
} | replace | 11 | 12 | 11 | 12 | 0 | |
p02975 | C++ | Runtime Error | #include <bits/stdc++.h>
using namespace std;
using llong = long long;
using ldbl = long double;
using lpair = pair<llong, llong>;
#define ALL(x) x.begin(), x.end()
const llong inf = 1100100100100100ll;
const llong mod = 1e9 + 7;
int main() {
llong N;
vector<llong> a;
map<llong, llong> m;
cin >> N;
a.resize(N);
for (int i = 0; i < N; ++i) {
cin >> a[i];
m[a[i]]++;
}
if (m.size() == 1 && m[0] > 0) {
cout << "Yes" << endl;
} else if (N % 3 != 0) {
cout << "No" << endl;
} else {
if (m.size() != 3) {
return 1;
cout << "No" << endl;
} else {
map<llong, llong> mm;
vector<llong> v;
for (auto it = m.begin(); it != m.end(); ++it) {
v.push_back(it->first);
mm[it->second]++;
}
if (mm.size() != 1) {
cout << "No" << endl;
} else {
if ((v[0] ^ v[2]) == v[1] && (v[1] ^ v[0]) == v[2] &&
(v[2] ^ v[1]) == v[0]) {
cout << "Yes" << endl;
} else {
cout << "No" << endl;
}
}
}
}
return 0;
} | #include <bits/stdc++.h>
using namespace std;
using llong = long long;
using ldbl = long double;
using lpair = pair<llong, llong>;
#define ALL(x) x.begin(), x.end()
const llong inf = 1100100100100100ll;
const llong mod = 1e9 + 7;
int main() {
llong N;
vector<llong> a;
map<llong, llong> m;
cin >> N;
a.resize(N);
for (int i = 0; i < N; ++i) {
cin >> a[i];
m[a[i]]++;
}
if (m.size() == 1 && m[0] > 0) {
cout << "Yes" << endl;
} else if (N % 3 != 0) {
cout << "No" << endl;
} else {
if (m.size() != 3) {
if (m[0] == N / 3) {
cout << "Yes" << endl;
} else {
cout << "No" << endl;
}
} else {
map<llong, llong> mm;
vector<llong> v;
for (auto it = m.begin(); it != m.end(); ++it) {
v.push_back(it->first);
mm[it->second]++;
}
if (mm.size() != 1) {
cout << "No" << endl;
} else {
if ((v[0] ^ v[2]) == v[1] && (v[1] ^ v[0]) == v[2] &&
(v[2] ^ v[1]) == v[0]) {
cout << "Yes" << endl;
} else {
cout << "No" << endl;
}
}
}
}
return 0;
} | replace | 30 | 32 | 30 | 35 | 0 | |
p02975 | C++ | Runtime Error | #include <algorithm>
#include <climits>
#include <cmath>
#include <cstdio>
#include <cstring>
#include <iostream>
#include <map>
#include <queue>
#include <set>
#include <stack>
#include <vector>
using namespace std;
#define LL long long
LL read() {
LL f = 1, x = 0;
char c = getchar();
while (c < '0' || '9' < c) {
if (c == '-')
f = -1;
c = getchar();
}
while ('0' <= c && c <= '9')
x = (x << 3) + (x << 1) + c - '0', c = getchar();
return f * x;
}
#define MAXN 80000
#define INF 0x3f3f3f3f
int cnt[10];
LL a[MAXN + 5], b[MAXN + 5];
int main() {
// freopen("circle.in","r",stdin);
// freopen("circle.out","w",stdout);
int T = 1;
while (T--) {
int n = read();
memset(cnt, 0, sizeof(cnt));
bool f = 1;
for (int i = 1; i <= n; i++) {
b[i] = a[i] = read();
if (a[i])
f = 0;
}
if (f) {
puts("Yes");
continue;
}
sort(b + 1, b + n + 1);
int m = unique(b + 1, b + n + 1) - (b + 1);
if (m >= 4) {
puts("No");
continue;
}
for (int t = 1; t <= m; t++)
for (int i = 1; i <= n; i++)
if (b[t] == a[i])
cnt[t]++;
sort(cnt + 1, cnt + m + 1);
if (m == 1)
puts("No");
if (m == 2) {
if (n % 3 == 0) {
if (cnt[1] == n / 3 && cnt[2] == n / 3 * 2 && b[1] == 0)
puts("Yes");
else
puts("No");
} else
puts("No");
}
if (m == 3) {
if (n % 3 == 0) {
if (cnt[1] == n / 3 && cnt[2] == n / 3 && cnt[3] == n / 3 &&
(b[1] == (b[2] ^ b[3])))
puts("Yes");
else
puts("No");
} else
puts("No");
}
}
return 0;
}
| #include <algorithm>
#include <climits>
#include <cmath>
#include <cstdio>
#include <cstring>
#include <iostream>
#include <map>
#include <queue>
#include <set>
#include <stack>
#include <vector>
using namespace std;
#define LL long long
LL read() {
LL f = 1, x = 0;
char c = getchar();
while (c < '0' || '9' < c) {
if (c == '-')
f = -1;
c = getchar();
}
while ('0' <= c && c <= '9')
x = (x << 3) + (x << 1) + c - '0', c = getchar();
return f * x;
}
#define MAXN 100000
#define INF 0x3f3f3f3f
int cnt[10];
LL a[MAXN + 5], b[MAXN + 5];
int main() {
// freopen("circle.in","r",stdin);
// freopen("circle.out","w",stdout);
int T = 1;
while (T--) {
int n = read();
memset(cnt, 0, sizeof(cnt));
bool f = 1;
for (int i = 1; i <= n; i++) {
b[i] = a[i] = read();
if (a[i])
f = 0;
}
if (f) {
puts("Yes");
continue;
}
sort(b + 1, b + n + 1);
int m = unique(b + 1, b + n + 1) - (b + 1);
if (m >= 4) {
puts("No");
continue;
}
for (int t = 1; t <= m; t++)
for (int i = 1; i <= n; i++)
if (b[t] == a[i])
cnt[t]++;
sort(cnt + 1, cnt + m + 1);
if (m == 1)
puts("No");
if (m == 2) {
if (n % 3 == 0) {
if (cnt[1] == n / 3 && cnt[2] == n / 3 * 2 && b[1] == 0)
puts("Yes");
else
puts("No");
} else
puts("No");
}
if (m == 3) {
if (n % 3 == 0) {
if (cnt[1] == n / 3 && cnt[2] == n / 3 && cnt[3] == n / 3 &&
(b[1] == (b[2] ^ b[3])))
puts("Yes");
else
puts("No");
} else
puts("No");
}
}
return 0;
}
| replace | 25 | 26 | 25 | 26 | 0 | |
p02975 | C++ | Runtime Error | #include <bits/stdc++.h>
using namespace std;
#ifdef LOCAL_DEBUG
#include "LOCAL_DEBUG.hpp"
#endif
#define int long long
void fail() {
cout << "No" << endl;
exit(0);
}
signed main() {
int n;
cin >> n;
vector<int> a(n);
map<int, int> mp;
for (int i = 0; i < n; i++) {
cin >> a[i];
mp[a[i]]++;
}
if (mp[0] == n) {
cout << "Yes" << endl;
return 0;
}
if (n % 3 != 0)
fail();
if (mp.size() == 2) {
if (mp[0] != n / 3)
fail();
} else {
vector<int> vec;
for (auto p : mp) {
if (p.first != 0 && p.second == n / 3)
vec.push_back(p.first);
}
if (vec[0] ^ vec[1] ^ vec[2] != 0)
fail();
}
cout << "Yes" << endl;
return 0;
}
| #include <bits/stdc++.h>
using namespace std;
#ifdef LOCAL_DEBUG
#include "LOCAL_DEBUG.hpp"
#endif
#define int long long
void fail() {
cout << "No" << endl;
exit(0);
}
signed main() {
int n;
cin >> n;
vector<int> a(n);
map<int, int> mp;
for (int i = 0; i < n; i++) {
cin >> a[i];
mp[a[i]]++;
}
if (mp[0] == n) {
cout << "Yes" << endl;
return 0;
}
if (n % 3 != 0)
fail();
if (mp.size() == 2) {
if (mp[0] != n / 3)
fail();
} else {
vector<int> vec;
for (auto p : mp) {
if (p.first != 0 && p.second == n / 3)
vec.push_back(p.first);
}
if (vec.size() != 3 || (vec[0] ^ vec[1] ^ vec[2]) != 0)
fail();
}
cout << "Yes" << endl;
return 0;
}
| replace | 39 | 40 | 39 | 40 | 0 | |
p02975 | C++ | Runtime Error | #include <bits/stdc++.h>
int main() {
using namespace std;
size_t N;
cin >> N;
unordered_map<unsigned long, size_t> mp;
for (unsigned long i = 0, a; i < N; ++i) {
cin >> a;
++mp[a];
}
if (mp.size() > 3)
return 0 & puts("No");
if (mp.size() == 1)
return 0 & puts(mp[0] == N ? "Yes" : "No");
if (mp.size() == 2)
return 0 & puts(mp[0] * 3 == N ? "Yes" : "No");
if (mp.size() == 3) {
vector<unsigned long> a;
for (const auto &i : mp) {
if (i.second * 3 != N)
return 0 & puts("No");
a.push_back(i.first);
}
assert(0);
puts(a[0] ^ a[1] == a[2] ? "Yes" : "No");
}
return 0;
} | #include <bits/stdc++.h>
int main() {
using namespace std;
size_t N;
cin >> N;
unordered_map<unsigned long, size_t> mp;
for (unsigned long i = 0, a; i < N; ++i) {
cin >> a;
++mp[a];
}
if (mp.size() > 3)
return 0 & puts("No");
if (mp.size() == 1)
return 0 & puts(mp[0] == N ? "Yes" : "No");
if (mp.size() == 2)
return 0 & puts(mp[0] * 3 == N ? "Yes" : "No");
if (mp.size() == 3) {
vector<unsigned long> a;
for (const auto &i : mp) {
if (i.second * 3 != N)
return 0 & puts("No");
a.push_back(i.first);
}
puts((a[0] ^ a[1]) == a[2] ? "Yes" : "No");
}
return 0;
} | replace | 24 | 26 | 24 | 25 | -6 | 8866038d-cc79-4ae4-9136-26c7a7111b18.out: /home/alex/Documents/bug-detection/input/Project_CodeNet/data/p02975/C++/s059737996.cpp:21: int main(): Assertion `0' failed.
|
p02975 | C++ | Runtime Error | // sjq
#include <algorithm>
#include <cstdio>
#include <cstring>
#include <stack>
#include <vector>
using namespace std;
typedef long long LL;
const int N = 80000;
int n;
LL a[N + 5];
int C[N + 5];
vector<LL> V;
int main() {
// freopen("circle.in", "r", stdin);
// freopen("circle.out", "w", stdout);
int T;
// scanf("%d", &T);
T = 1;
while (T--) {
V.clear();
C[0] = 0;
scanf("%d", &n);
for (register int i = 1; i <= n; i++) {
scanf("%lld", &a[i]);
C[i] = 0;
}
bool p = 1;
for (register int i = 1; i <= n; i++) {
int f = -1;
for (register int j = V.size() - 1; j >= 0; j--)
if (V[j] == a[i])
f = j;
if (!~f) {
V.push_back(a[i]);
C[V.size() - 1] = 1;
if (V.size() > 3) {
p = 0;
break;
}
} else
C[f]++;
}
if (!p) {
printf("No\n");
continue;
}
if (V.size() == 1) {
if (V[0] == 0)
printf("Yes\n");
else
printf("No\n");
continue;
}
if (n % 3) {
if (V.size() == 1 && V[0] == 0)
printf("Yes\n");
printf("No\n");
continue;
}
if (V.size() > 3) {
printf("No\n");
continue;
}
if (V.size() == 2) {
if (V[0] == 0 && C[0] == n / 3)
printf("Yes\n");
else if (V[1] == 0 && C[1] == n / 3)
printf("Yes\n");
else
printf("No\n");
continue;
}
if (V.size() == 3) {
if (V[0] ^ V[1] ^ V[2])
printf("No\n");
else if (C[0] == C[1] && C[1] == C[2])
printf("Yes\n");
else
printf("No\n");
continue;
}
}
return 0;
}
| // sjq
#include <algorithm>
#include <cstdio>
#include <cstring>
#include <stack>
#include <vector>
using namespace std;
typedef long long LL;
const int N = 100000;
int n;
LL a[N + 5];
int C[N + 5];
vector<LL> V;
int main() {
// freopen("circle.in", "r", stdin);
// freopen("circle.out", "w", stdout);
int T;
// scanf("%d", &T);
T = 1;
while (T--) {
V.clear();
C[0] = 0;
scanf("%d", &n);
for (register int i = 1; i <= n; i++) {
scanf("%lld", &a[i]);
C[i] = 0;
}
bool p = 1;
for (register int i = 1; i <= n; i++) {
int f = -1;
for (register int j = V.size() - 1; j >= 0; j--)
if (V[j] == a[i])
f = j;
if (!~f) {
V.push_back(a[i]);
C[V.size() - 1] = 1;
if (V.size() > 3) {
p = 0;
break;
}
} else
C[f]++;
}
if (!p) {
printf("No\n");
continue;
}
if (V.size() == 1) {
if (V[0] == 0)
printf("Yes\n");
else
printf("No\n");
continue;
}
if (n % 3) {
if (V.size() == 1 && V[0] == 0)
printf("Yes\n");
printf("No\n");
continue;
}
if (V.size() > 3) {
printf("No\n");
continue;
}
if (V.size() == 2) {
if (V[0] == 0 && C[0] == n / 3)
printf("Yes\n");
else if (V[1] == 0 && C[1] == n / 3)
printf("Yes\n");
else
printf("No\n");
continue;
}
if (V.size() == 3) {
if (V[0] ^ V[1] ^ V[2])
printf("No\n");
else if (C[0] == C[1] && C[1] == C[2])
printf("Yes\n");
else
printf("No\n");
continue;
}
}
return 0;
}
| replace | 10 | 11 | 10 | 11 | 0 | |
p02975 | C++ | Runtime Error | #include <algorithm>
#include <cassert>
#include <chrono>
#include <cmath>
#include <cstdio>
#include <ctime>
#include <functional>
#include <iostream>
#include <map>
#include <queue>
#include <random>
#include <set>
#include <sstream>
#include <string>
#include <tuple>
#include <utility>
#include <vector>
using namespace std;
namespace {
using Integer = long long; //__int128;
template <class T, class S> istream &operator>>(istream &is, pair<T, S> &p) {
return is >> p.first >> p.second;
}
template <class T> istream &operator>>(istream &is, vector<T> &vec) {
for (T &val : vec)
is >> val;
return is;
}
template <class T> istream &operator,(istream &is, T &val) { return is >> val; }
template <class T, class S>
ostream &operator<<(ostream &os, const pair<T, S> &p) {
return os << p.first << " " << p.second;
}
template <class T> ostream &operator<<(ostream &os, const vector<T> &vec) {
for (size_t i = 0; i < vec.size(); i++)
os << vec[i] << (i == vec.size() - 1 ? "" : " ");
return os;
}
template <class T> ostream &operator,(ostream &os, const T &val) {
return os << " " << val;
}
template <class H> void print(const H &head) { cout << head; }
template <class H, class... T> void print(const H &head, const T &...tail) {
cout << head << " ";
print(tail...);
}
template <class... T> void println(const T &...values) {
print(values...);
cout << endl;
}
template <class H> void eprint(const H &head) { cerr << head; }
template <class H, class... T> void eprint(const H &head, const T &...tail) {
cerr << head << " ";
eprint(tail...);
}
template <class... T> void eprintln(const T &...values) {
eprint(values...);
cerr << endl;
}
class range {
Integer start_, end_, step_;
public:
struct range_iterator {
Integer val, step_;
range_iterator(Integer v, Integer step) : val(v), step_(step) {}
Integer operator*() { return val; }
void operator++() { val += step_; }
bool operator!=(range_iterator &x) {
return step_ > 0 ? val < x.val : val > x.val;
}
};
range(Integer len) : start_(0), end_(len), step_(1) {}
range(Integer start, Integer end) : start_(start), end_(end), step_(1) {}
range(Integer start, Integer end, Integer step)
: start_(start), end_(end), step_(step) {}
range_iterator begin() { return range_iterator(start_, step_); }
range_iterator end() { return range_iterator(end_, step_); }
};
inline string operator"" _s(const char *str, size_t size) {
return move(string(str));
}
constexpr Integer my_pow(Integer x, Integer k, Integer z = 1) {
return k == 0 ? z
: k == 1 ? z * x
: (k & 1) ? my_pow(x * x, k >> 1, z * x)
: my_pow(x * x, k >> 1, z);
}
constexpr Integer my_pow_mod(Integer x, Integer k, Integer M, Integer z = 1) {
return k == 0 ? z % M
: k == 1 ? z * x % M
: (k & 1) ? my_pow_mod(x * x % M, k >> 1, M, z * x % M)
: my_pow_mod(x * x % M, k >> 1, M, z);
}
constexpr unsigned long long operator"" _ten(unsigned long long value) {
return my_pow(10, value);
}
inline int k_bit(Integer x, int k) { return (x >> k) & 1; } // 0-indexed
mt19937 mt(chrono::duration_cast<chrono::nanoseconds>(
chrono::steady_clock::now().time_since_epoch())
.count());
template <class T> string join(const vector<T> &v, const string &sep) {
stringstream ss;
for (size_t i = 0; i < v.size(); i++) {
if (i > 0)
ss << sep;
ss << v[i];
}
return ss.str();
}
inline string operator*(string s, int k) {
string ret;
while (k) {
if (k & 1)
ret += s;
s += s;
k >>= 1;
}
return ret;
}
} // namespace
constexpr long long mod = 9_ten + 7;
int main() {
long long n;
cin >> n;
vector<long long> a(n);
cin >> a;
if (count(a.begin(), a.end(), 0) == n) {
println("Yes");
return 0;
}
if (n % 3 != 0) {
println("No");
return 0;
}
long long t = n / 3;
map<long long, long long> cnt;
for (long long i = 0; i < n; i++) {
cnt[a[i]]++;
}
for (long long i = 1; i < n; i++) {
long long x = a[0];
long long y = a[i];
long long z = x ^ y;
long long w = y ^ z;
if (x != w)
continue;
if (cnt[x] >= t && cnt[y] >= t && cnt[z] >= t) {
println("Yes");
return 0;
}
}
assert(false);
println("No");
return 0;
}
| #include <algorithm>
#include <cassert>
#include <chrono>
#include <cmath>
#include <cstdio>
#include <ctime>
#include <functional>
#include <iostream>
#include <map>
#include <queue>
#include <random>
#include <set>
#include <sstream>
#include <string>
#include <tuple>
#include <utility>
#include <vector>
using namespace std;
namespace {
using Integer = long long; //__int128;
template <class T, class S> istream &operator>>(istream &is, pair<T, S> &p) {
return is >> p.first >> p.second;
}
template <class T> istream &operator>>(istream &is, vector<T> &vec) {
for (T &val : vec)
is >> val;
return is;
}
template <class T> istream &operator,(istream &is, T &val) { return is >> val; }
template <class T, class S>
ostream &operator<<(ostream &os, const pair<T, S> &p) {
return os << p.first << " " << p.second;
}
template <class T> ostream &operator<<(ostream &os, const vector<T> &vec) {
for (size_t i = 0; i < vec.size(); i++)
os << vec[i] << (i == vec.size() - 1 ? "" : " ");
return os;
}
template <class T> ostream &operator,(ostream &os, const T &val) {
return os << " " << val;
}
template <class H> void print(const H &head) { cout << head; }
template <class H, class... T> void print(const H &head, const T &...tail) {
cout << head << " ";
print(tail...);
}
template <class... T> void println(const T &...values) {
print(values...);
cout << endl;
}
template <class H> void eprint(const H &head) { cerr << head; }
template <class H, class... T> void eprint(const H &head, const T &...tail) {
cerr << head << " ";
eprint(tail...);
}
template <class... T> void eprintln(const T &...values) {
eprint(values...);
cerr << endl;
}
class range {
Integer start_, end_, step_;
public:
struct range_iterator {
Integer val, step_;
range_iterator(Integer v, Integer step) : val(v), step_(step) {}
Integer operator*() { return val; }
void operator++() { val += step_; }
bool operator!=(range_iterator &x) {
return step_ > 0 ? val < x.val : val > x.val;
}
};
range(Integer len) : start_(0), end_(len), step_(1) {}
range(Integer start, Integer end) : start_(start), end_(end), step_(1) {}
range(Integer start, Integer end, Integer step)
: start_(start), end_(end), step_(step) {}
range_iterator begin() { return range_iterator(start_, step_); }
range_iterator end() { return range_iterator(end_, step_); }
};
inline string operator"" _s(const char *str, size_t size) {
return move(string(str));
}
constexpr Integer my_pow(Integer x, Integer k, Integer z = 1) {
return k == 0 ? z
: k == 1 ? z * x
: (k & 1) ? my_pow(x * x, k >> 1, z * x)
: my_pow(x * x, k >> 1, z);
}
constexpr Integer my_pow_mod(Integer x, Integer k, Integer M, Integer z = 1) {
return k == 0 ? z % M
: k == 1 ? z * x % M
: (k & 1) ? my_pow_mod(x * x % M, k >> 1, M, z * x % M)
: my_pow_mod(x * x % M, k >> 1, M, z);
}
constexpr unsigned long long operator"" _ten(unsigned long long value) {
return my_pow(10, value);
}
inline int k_bit(Integer x, int k) { return (x >> k) & 1; } // 0-indexed
mt19937 mt(chrono::duration_cast<chrono::nanoseconds>(
chrono::steady_clock::now().time_since_epoch())
.count());
template <class T> string join(const vector<T> &v, const string &sep) {
stringstream ss;
for (size_t i = 0; i < v.size(); i++) {
if (i > 0)
ss << sep;
ss << v[i];
}
return ss.str();
}
inline string operator*(string s, int k) {
string ret;
while (k) {
if (k & 1)
ret += s;
s += s;
k >>= 1;
}
return ret;
}
} // namespace
constexpr long long mod = 9_ten + 7;
int main() {
long long n;
cin >> n;
vector<long long> a(n);
cin >> a;
if (count(a.begin(), a.end(), 0) == n) {
println("Yes");
return 0;
}
if (n % 3 != 0) {
println("No");
return 0;
}
long long t = n / 3;
map<long long, long long> cnt;
for (long long i = 0; i < n; i++) {
cnt[a[i]]++;
}
for (long long i = 1; i < n; i++) {
long long x = a[0];
long long y = a[i];
long long z = x ^ y;
long long w = y ^ z;
if (x != w)
continue;
if (cnt[x] >= t && cnt[y] >= t && cnt[z] >= t) {
println("Yes");
return 0;
}
}
println("No");
return 0;
}
| delete | 168 | 169 | 168 | 168 | 0 | |
p02975 | C++ | Runtime Error | #include <bits/stdc++.h>
#include <ext/pb_ds/detail/standard_policies.hpp>
using namespace __gnu_pbds;
using namespace std;
typedef long long ll;
typedef unsigned long long ull;
typedef long double ld;
#define endl "\n"
const int MAX = 100005;
const long long mod = 1.0e9 + 7;
int main() {
ios_base::sync_with_stdio(false);
cin.tie(NULL);
cout.tie(NULL);
#ifndef ONLINE_JUDGE
freopen("in.txt", "r", stdin);
freopen("out.txt", "w", stdout);
#endif
ll n, i;
cin >> n;
ll arr[n], x = 0;
for (i = 0; i < n; i++) {
cin >> arr[i];
x = x ^ arr[i];
}
if (x == 0) {
cout << "Yes" << endl;
} else
cout << "No" << endl;
return 0;
}
| #include <bits/stdc++.h>
#include <ext/pb_ds/detail/standard_policies.hpp>
using namespace __gnu_pbds;
using namespace std;
typedef long long ll;
typedef unsigned long long ull;
typedef long double ld;
#define endl "\n"
const int MAX = 100005;
const long long mod = 1.0e9 + 7;
int main() {
ios_base::sync_with_stdio(false);
cin.tie(NULL);
cout.tie(NULL);
ll n, i;
cin >> n;
ll arr[n], x = 0;
for (i = 0; i < n; i++) {
cin >> arr[i];
x = x ^ arr[i];
}
if (x == 0) {
cout << "Yes" << endl;
} else
cout << "No" << endl;
return 0;
}
| delete | 14 | 18 | 14 | 14 | -11 | |
p02975 | C++ | Time Limit Exceeded | typedef long long ll;
#include <bits/stdc++.h>
using namespace std;
template <typename A, size_t N, typename T>
void Fill(A (&array)[N], const T &val) {
std::fill((T *)array, (T *)(array + N), val);
}
ll askx(ll a, ll b) {
ll ans = 0;
for (int i = 0; i < 30; i++) {
if (b & (1 << i)) {
if (a & (1 << i)) {
} else {
ans |= (1 << i);
}
} else {
if (a & (1 << i)) {
ans |= (1 << i);
} else {
}
}
}
return ans;
}
ll n;
bool saiki(ll now, ll a, ll b, map<ll, ll> c) {
if (now == n) {
return true;
}
bool ok = false;
ll x = askx(a, b);
if (c[x] > 0) {
c[x]--;
if (saiki(now + 1, b, x, c)) {
ok = true;
} else {
c[x]++;
}
}
return ok;
}
int main() {
ll a[100010];
std::cin >> n;
std::map<ll, ll> cou;
for (int i = 0; i < n; i++) {
std::cin >> a[i];
cou[a[i]]++;
}
for (int i = 1; i < n; i++) {
if (cou[askx(a[0], a[i])] > 0 && cou[askx(a[i], a[0])] > 0) {
cou[a[0]]--;
cou[a[i]]--;
if (saiki(2, a[0], a[i], cou)) {
std::cout << "Yes" << std::endl;
return 0;
}
cou[a[0]]++;
cou[a[i]]++;
}
}
std::cout << "No" << std::endl;
} | typedef long long ll;
#include <bits/stdc++.h>
using namespace std;
template <typename A, size_t N, typename T>
void Fill(A (&array)[N], const T &val) {
std::fill((T *)array, (T *)(array + N), val);
}
ll askx(ll a, ll b) {
ll ans = 0;
for (int i = 0; i < 30; i++) {
if (b & (1 << i)) {
if (a & (1 << i)) {
} else {
ans |= (1 << i);
}
} else {
if (a & (1 << i)) {
ans |= (1 << i);
} else {
}
}
}
return ans;
}
ll n;
bool saiki(ll now, ll a, ll b, map<ll, ll> c) {
if (now == n) {
return true;
}
bool ok = false;
ll x = askx(a, b);
if (c[x] > 0) {
c[x]--;
if (saiki(now + 1, b, x, c)) {
ok = true;
} else {
c[x]++;
}
}
return ok;
}
int main() {
ll a[100010];
std::cin >> n;
std::map<ll, ll> cou;
for (int i = 0; i < n; i++) {
std::cin >> a[i];
cou[a[i]]++;
}
for (int i = 0; i < 30; i++) {
ll c1, c0;
c1 = 0;
c0 = 0;
for (int j = 0; j < n; j++) {
if (a[j] & (1 << i)) {
c1++;
} else {
c0++;
}
}
if (c1 == 2 * c0 || c0 == n) {
continue;
} else {
std::cout << "No" << std::endl;
return 0;
}
}
for (int i = 1; i < n; i++) {
if (cou[askx(a[0], a[i])] > 0 && cou[askx(a[i], a[0])] > 0) {
cou[a[0]]--;
cou[a[i]]--;
if (saiki(2, a[0], a[i], cou)) {
std::cout << "Yes" << std::endl;
return 0;
}
cou[a[0]]++;
cou[a[i]]++;
}
}
std::cout << "No" << std::endl;
} | insert | 55 | 55 | 55 | 74 | TLE | |
p02975 | C++ | Runtime Error | #include <bits/stdc++.h>
using namespace std;
int main() {
int n;
cin >> n;
vector<int> A(n);
map<int, int> cnt;
for (int i = 0; i < n; i++) {
cin >> A[i];
cnt[A[i]] += 1;
}
if (cnt[0] == n) {
cout << "Yes" << endl;
return 0;
}
if (n % 3 != 0) {
cout << "No" << endl;
return 0;
}
vector<int> all;
for (auto &p : cnt) {
for (int i = 0; i < p.second / (n / 3); i++) {
all.push_back(p.first);
}
}
if (all.size() == 3 & (all[0] ^ all[1] ^ all[2]) == 0) {
cout << "Yes" << endl;
} else {
cout << "No" << endl;
}
} | #include <bits/stdc++.h>
using namespace std;
int main() {
int n;
cin >> n;
vector<int> A(n);
map<int, int> cnt;
for (int i = 0; i < n; i++) {
cin >> A[i];
cnt[A[i]] += 1;
}
if (cnt[0] == n) {
cout << "Yes" << endl;
return 0;
}
if (n % 3 != 0) {
cout << "No" << endl;
return 0;
}
vector<int> all;
for (auto &p : cnt) {
for (int i = 0; i < p.second / (n / 3); i++) {
all.push_back(p.first);
}
}
if (all.size() == 3 && (all[0] ^ all[1] ^ all[2]) == 0) {
cout << "Yes" << endl;
} else {
cout << "No" << endl;
}
} | replace | 27 | 28 | 27 | 28 | 0 | |
p02975 | C++ | Runtime Error | #include <cstdio>
#include <iostream>
#include <string>
#include <utility>
#include <vector>
using namespace std;
int No() {
cout << "No";
return 0;
}
int Yes() {
cout << "Yes";
return 0;
}
int main() {
int a[3][2] = {}, n;
cin >> n;
for (int i = 0; i < n; i++) {
int tmp;
cin >> tmp;
for (int j = 0; j <= 3; j++) {
if (j == 3) {
return No();
}
if (a[j][1] == 0) {
a[j][0] = tmp;
a[j][1]++;
break;
} else if (a[j][0] == tmp) {
a[j][1]++;
break;
}
}
}
if (a[2][1] != 0) { //
if (a[0][1] != a[1][1])
return No();
if (a[1][1] != a[2][1])
return No();
a[0][0] = 1 / 0;
if (a[0][0] ^ a[1][0] != a[2][0])
return No();
return Yes();
} else if (a[1][1] != 0) {
if (a[0][0] == 0) {
if (a[0][1] * 2 != a[1][1])
return No();
return Yes();
}
if (a[1][0] == 0) {
if (a[1][1] * 2 != a[0][1])
return No();
return Yes();
}
return No();
} else if (a[0][1] != 0) { //
if (a[0][0] != 0)
return No();
return Yes();
}
} | #include <cstdio>
#include <iostream>
#include <string>
#include <utility>
#include <vector>
using namespace std;
int No() {
cout << "No";
return 0;
}
int Yes() {
cout << "Yes";
return 0;
}
int main() {
int a[3][2] = {}, n;
cin >> n;
for (int i = 0; i < n; i++) {
int tmp;
cin >> tmp;
for (int j = 0; j <= 3; j++) {
if (j == 3) {
return No();
}
if (a[j][1] == 0) {
a[j][0] = tmp;
a[j][1]++;
break;
} else if (a[j][0] == tmp) {
a[j][1]++;
break;
}
}
}
if (a[2][1] != 0) { //
if (a[0][1] != a[1][1])
return No();
if (a[1][1] != a[2][1])
return No();
if ((a[0][0] ^ a[1][0]) != a[2][0])
return No();
return Yes();
} else if (a[1][1] != 0) {
if (a[0][0] == 0) {
if (a[0][1] * 2 != a[1][1])
return No();
return Yes();
}
if (a[1][0] == 0) {
if (a[1][1] * 2 != a[0][1])
return No();
return Yes();
}
return No();
} else if (a[0][1] != 0) { //
if (a[0][0] != 0)
return No();
return Yes();
}
} | replace | 39 | 41 | 39 | 40 | -8 | |
p02975 | C++ | Time Limit Exceeded | #include <bits/stdc++.h>
using namespace std;
const int N = 1e5 + 10;
int t, n, a[N], b[N], num[N], tot, c;
map<int, int> cnt, tmp;
void solve() {
if (tot > 3) {
puts("No");
return;
} else if (tot == 1) {
if (num[0] == 0) {
puts("Yes");
return;
} else {
puts("No");
return;
}
} else {
bool ok = 1;
do {
ok = 1;
tmp = cnt;
b[1] = num[0];
tmp[num[0]]--;
b[2] = num[1];
tmp[num[1]]--;
for (int i = 3; i <= n && ok; ++i) {
bool upd = 0;
for (int j = 0; j < 3 && !upd; ++j) {
if (tmp[num[j]] > 0 && (num[j] ^ b[i - 2]) == b[i - 1]) {
b[i] = num[j];
tmp[num[j]]--;
upd = 1;
}
}
if (!upd)
ok = 0;
}
if (ok && (b[n] ^ b[n - 1]) != b[1])
ok = 0;
if (ok)
break;
} while (num, num + tot);
if (ok)
puts("Yes");
else
puts("No");
}
}
int main() {
scanf("%d", &n);
for (int i = 1; i <= n; ++i) {
scanf("%d", &a[i]);
if (!cnt.count(a[i]))
num[tot++] = a[i];
cnt[a[i]]++;
}
solve();
return 0;
} | #include <bits/stdc++.h>
using namespace std;
const int N = 1e5 + 10;
int t, n, a[N], b[N], num[N], tot, c;
map<int, int> cnt, tmp;
void solve() {
if (tot > 3) {
puts("No");
return;
} else if (tot == 1) {
if (num[0] == 0) {
puts("Yes");
return;
} else {
puts("No");
return;
}
} else {
bool ok = 1;
do {
ok = 1;
tmp = cnt;
b[1] = num[0];
tmp[num[0]]--;
b[2] = num[1];
tmp[num[1]]--;
for (int i = 3; i <= n && ok; ++i) {
bool upd = 0;
for (int j = 0; j < 3 && !upd; ++j) {
if (tmp[num[j]] > 0 && (num[j] ^ b[i - 2]) == b[i - 1]) {
b[i] = num[j];
tmp[num[j]]--;
upd = 1;
}
}
if (!upd)
ok = 0;
}
if (ok && (b[n] ^ b[n - 1]) != b[1])
ok = 0;
if (ok)
break;
} while (next_permutation(num, num + tot));
if (ok)
puts("Yes");
else
puts("No");
}
}
int main() {
scanf("%d", &n);
for (int i = 1; i <= n; ++i) {
scanf("%d", &a[i]);
if (!cnt.count(a[i]))
num[tot++] = a[i];
cnt[a[i]]++;
}
solve();
return 0;
} | replace | 42 | 43 | 42 | 43 | TLE | |
p02975 | C++ | Runtime Error | #include "bits/stdc++.h"
using namespace std;
const int MAXN = 1e5 + 5;
int n, a[MAXN];
map<int, int> num;
vector<int> vals;
int main() {
scanf("%d", &n);
bool doZero = false;
for (int i = 0; i < n; ++i) {
scanf("%d", &a[i]);
num[a[i]]++;
if (a[i] == 0)
doZero = true;
}
if (n % 3 == 0) {
if (num.size() > 3) {
printf("No\n");
} else if (num.size() == 3) {
// All should equal
vector<int> vals, nums;
for (auto i : num) {
vals.push_back(i.first);
nums.push_back(i.second);
assert(i.second > 0);
}
assert(nums.size() == 3);
if (nums[0] == nums[1] && nums[1] == nums[2] &&
vals[0] ^ vals[1] == vals[2]) {
assert(false);
printf("Yes\n");
} else {
printf("No\n");
}
} else if (num.size() == 2) {
vector<int> vals, nums;
for (auto i : num) {
vals.push_back(i.first);
nums.push_back(i.second);
}
bool valid = true;
assert(nums.size() == 2);
if (vals[0] == 0) {
if (2 * nums[0] != nums[1])
valid = false;
} else if (vals[1] == 0) {
if (2 * nums[1] != nums[0])
valid = false;
} else {
valid = false;
}
if (valid)
printf("Yes\n");
else
printf("No\n");
} else {
if (doZero) {
printf("Yes\n");
} else {
printf("No\n");
}
}
} else {
if (num.size() == 1 && doZero) {
printf("Yes\n");
} else {
printf("No\n");
}
}
} | #include "bits/stdc++.h"
using namespace std;
const int MAXN = 1e5 + 5;
int n, a[MAXN];
map<int, int> num;
vector<int> vals;
int main() {
scanf("%d", &n);
bool doZero = false;
for (int i = 0; i < n; ++i) {
scanf("%d", &a[i]);
num[a[i]]++;
if (a[i] == 0)
doZero = true;
}
if (n % 3 == 0) {
if (num.size() > 3) {
printf("No\n");
} else if (num.size() == 3) {
// All should equal
vector<int> vals, nums;
for (auto i : num) {
vals.push_back(i.first);
nums.push_back(i.second);
assert(i.second > 0);
}
assert(nums.size() == 3);
if (nums[0] == nums[1] && nums[1] == nums[2] &&
(vals[0] ^ vals[1]) == vals[2]) {
printf("Yes\n");
} else {
printf("No\n");
}
} else if (num.size() == 2) {
vector<int> vals, nums;
for (auto i : num) {
vals.push_back(i.first);
nums.push_back(i.second);
}
bool valid = true;
assert(nums.size() == 2);
if (vals[0] == 0) {
if (2 * nums[0] != nums[1])
valid = false;
} else if (vals[1] == 0) {
if (2 * nums[1] != nums[0])
valid = false;
} else {
valid = false;
}
if (valid)
printf("Yes\n");
else
printf("No\n");
} else {
if (doZero) {
printf("Yes\n");
} else {
printf("No\n");
}
}
} else {
if (num.size() == 1 && doZero) {
printf("Yes\n");
} else {
printf("No\n");
}
}
} | replace | 31 | 33 | 31 | 32 | -6 | 243a2eb5-cb0e-4235-976c-e0bcb59e4879.out: /home/alex/Documents/bug-detection/input/Project_CodeNet/data/p02975/C++/s340144915.cpp:32: int main(): Assertion `false' failed.
|
p02975 | C++ | Runtime Error | // Ruthless Coding
#include <bits/stdc++.h>
#define uni(x) (x).resize(unique(ALL(x)) - (x).begin())
#define fprint(v) \
for (auto x : v) \
cout << x << ' '
#define ALL(x) (x).begin(), (x).end()
#define PI 3.14159265358979323846
#define MP(x, y) make_pair(x, y)
#define SZ(x) int((x).size())
#define PB(x) push_back(x)
#define ld long double
#define ll long long
#define S second
#define F first
#define nl '\n'
using namespace std;
void __print(int x) { cerr << x; }
void __print(long x) { cerr << x; }
void __print(long long x) { cerr << x; }
void __print(unsigned x) { cerr << x; }
void __print(unsigned long x) { cerr << x; }
void __print(unsigned long long x) { cerr << x; }
void __print(float x) { cerr << x; }
void __print(double x) { cerr << x; }
void __print(long double x) { cerr << x; }
void __print(char x) { cerr << '\'' << x << '\''; }
void __print(const char *x) { cerr << '\"' << x << '\"'; }
void __print(const string &x) { cerr << '\"' << x << '\"'; }
void __print(bool x) { cerr << (x ? "true" : "false"); }
template <typename T, typename V> void __print(const pair<T, V> &x) {
cerr << '{';
__print(x.first);
cerr << ',';
__print(x.second);
cerr << '}';
}
template <typename T> void __print(const T &x) {
int f = 0;
cerr << '{';
for (auto &i : x)
cerr << (f++ ? "," : ""), __print(i);
cerr << "}";
}
void _print() { cerr << "]\n"; }
template <typename T, typename... V> void _print(T t, V... v) {
__print(t);
if (sizeof...(v))
cerr << ", ";
_print(v...);
}
#ifndef ONLINE_JUDGE
#define debug(x...) \
cerr << "[" << #x << "] = ["; \
_print(x)
#else
#define debug(x...)
#endif
mt19937_64 rnd;
const int N = 2e5 + 5;
int main() {
ios_base::sync_with_stdio(0);
cin.tie(0);
freopen("test_11.txt", "r", stdin);
int n;
cin >> n;
vector<int> a(n);
map<int, int> mp;
for (auto &x : a) {
cin >> x;
mp[x]++;
}
sort(ALL(a));
uni(a);
if (SZ(a) == 1) {
if (a[0] == 0) {
cout << "Yes";
} else {
cout << "No";
}
} else if (SZ(a) == 2) {
if (a[0] == 0 && n % 3 == 0 && mp[0] == n / 3) {
cout << "Yes";
} else {
cout << "No";
}
} else if (SZ(a) == 3 && n % 3 == 0) {
if ((a[0] ^ a[1] ^ a[2]) == 0) {
if (mp[a[0]] == n / 3 && mp[a[1]] == n / 3 && mp[a[2]] == n / 3) {
cout << "Yes";
} else {
cout << "No";
}
} else {
cout << "No";
}
} else {
cout << "No";
}
return 0;
}
/*
*** Most Impo.. -> check base case always
1. Overflow Check (*, +)
2. Index check (0 - based or 1 - based)
3. Check for n = 1, 2, 3, 4....
4. Corner Cases
*/ | // Ruthless Coding
#include <bits/stdc++.h>
#define uni(x) (x).resize(unique(ALL(x)) - (x).begin())
#define fprint(v) \
for (auto x : v) \
cout << x << ' '
#define ALL(x) (x).begin(), (x).end()
#define PI 3.14159265358979323846
#define MP(x, y) make_pair(x, y)
#define SZ(x) int((x).size())
#define PB(x) push_back(x)
#define ld long double
#define ll long long
#define S second
#define F first
#define nl '\n'
using namespace std;
void __print(int x) { cerr << x; }
void __print(long x) { cerr << x; }
void __print(long long x) { cerr << x; }
void __print(unsigned x) { cerr << x; }
void __print(unsigned long x) { cerr << x; }
void __print(unsigned long long x) { cerr << x; }
void __print(float x) { cerr << x; }
void __print(double x) { cerr << x; }
void __print(long double x) { cerr << x; }
void __print(char x) { cerr << '\'' << x << '\''; }
void __print(const char *x) { cerr << '\"' << x << '\"'; }
void __print(const string &x) { cerr << '\"' << x << '\"'; }
void __print(bool x) { cerr << (x ? "true" : "false"); }
template <typename T, typename V> void __print(const pair<T, V> &x) {
cerr << '{';
__print(x.first);
cerr << ',';
__print(x.second);
cerr << '}';
}
template <typename T> void __print(const T &x) {
int f = 0;
cerr << '{';
for (auto &i : x)
cerr << (f++ ? "," : ""), __print(i);
cerr << "}";
}
void _print() { cerr << "]\n"; }
template <typename T, typename... V> void _print(T t, V... v) {
__print(t);
if (sizeof...(v))
cerr << ", ";
_print(v...);
}
#ifndef ONLINE_JUDGE
#define debug(x...) \
cerr << "[" << #x << "] = ["; \
_print(x)
#else
#define debug(x...)
#endif
mt19937_64 rnd;
const int N = 2e5 + 5;
int main() {
ios_base::sync_with_stdio(0);
cin.tie(0);
int n;
cin >> n;
vector<int> a(n);
map<int, int> mp;
for (auto &x : a) {
cin >> x;
mp[x]++;
}
sort(ALL(a));
uni(a);
if (SZ(a) == 1) {
if (a[0] == 0) {
cout << "Yes";
} else {
cout << "No";
}
} else if (SZ(a) == 2) {
if (a[0] == 0 && n % 3 == 0 && mp[0] == n / 3) {
cout << "Yes";
} else {
cout << "No";
}
} else if (SZ(a) == 3 && n % 3 == 0) {
if ((a[0] ^ a[1] ^ a[2]) == 0) {
if (mp[a[0]] == n / 3 && mp[a[1]] == n / 3 && mp[a[2]] == n / 3) {
cout << "Yes";
} else {
cout << "No";
}
} else {
cout << "No";
}
} else {
cout << "No";
}
return 0;
}
/*
*** Most Impo.. -> check base case always
1. Overflow Check (*, +)
2. Index check (0 - based or 1 - based)
3. Check for n = 1, 2, 3, 4....
4. Corner Cases
*/ | delete | 68 | 69 | 68 | 68 | 0 | |
p02975 | C++ | Runtime Error | #include <algorithm>
#include <cstdio>
#include <map>
using namespace std;
#define N 80005
#define ll long long
int t, n;
ll a[N];
int main() {
// freopen("circle.in","r",stdin);
// freopen("circle.out","w",stdout);
// scanf("%d",&t);
// while(t--)
//{
int k = 0;
scanf("%d", &n);
for (int i = 1; i <= n; i++)
scanf("%lld", &a[i]), k ^= a[i];
if (k != 0) {
printf("No\n");
// continue;
}
// sort(a+1,a+n+1);
else {
printf("Yes\n");
}
//}
} | #include <algorithm>
#include <cstdio>
#include <map>
using namespace std;
#define N 100005
#define ll long long
int t, n;
ll a[N];
int main() {
// freopen("circle.in","r",stdin);
// freopen("circle.out","w",stdout);
// scanf("%d",&t);
// while(t--)
//{
int k = 0;
scanf("%d", &n);
for (int i = 1; i <= n; i++)
scanf("%lld", &a[i]), k ^= a[i];
if (k != 0) {
printf("No\n");
// continue;
}
// sort(a+1,a+n+1);
else {
printf("Yes\n");
}
//}
} | replace | 4 | 5 | 4 | 5 | 0 | |
p02975 | C++ | Runtime Error | #include <algorithm>
#include <iostream>
#include <map>
#include <math.h>
#include <numeric>
#include <set>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <vector>
using namespace std;
typedef long long ll;
bool solve(int N, vector<int> &a) {
map<int, int> s;
for (int i = 0; i < N; i++) {
s[a[i]]++;
}
pair<int, int> v[3];
int j = 0;
for (auto it = s.begin(); it != s.end(); ++it, j++) {
v[j] = *it;
}
if (s.size() == 3) {
if (v[0].second == v[1].second && v[1].second == v[2].second) {
if ((v[0].first ^ v[1].first ^ v[2].first) == 0) {
return true;
}
}
return false;
} else if (s.size() == 2) {
if (v[0].second < v[1].second) {
swap(v[0], v[1]);
}
if (v[0].second == v[1].second * 2) {
if ((v[0].first ^ v[0].first ^ v[1].first) == 0) {
return true;
}
}
return false;
} else {
if (v[0].first == 0) {
return true;
}
return false;
}
}
int main() {
int N;
scanf("%d", &N);
vector<int> a(N);
for (int i = 0; i < N; i++) {
scanf("%d", &a[i]);
}
printf("%s\n", solve(N, a) ? "Yes" : "No");
}
| #include <algorithm>
#include <iostream>
#include <map>
#include <math.h>
#include <numeric>
#include <set>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <vector>
using namespace std;
typedef long long ll;
bool solve(int N, vector<int> &a) {
map<int, int> s;
for (int i = 0; i < N; i++) {
s[a[i]]++;
}
if (s.size() > 3) {
return false;
}
pair<int, int> v[3];
int j = 0;
for (auto it = s.begin(); it != s.end(); ++it, j++) {
v[j] = *it;
}
if (s.size() == 3) {
if (v[0].second == v[1].second && v[1].second == v[2].second) {
if ((v[0].first ^ v[1].first ^ v[2].first) == 0) {
return true;
}
}
return false;
} else if (s.size() == 2) {
if (v[0].second < v[1].second) {
swap(v[0], v[1]);
}
if (v[0].second == v[1].second * 2) {
if ((v[0].first ^ v[0].first ^ v[1].first) == 0) {
return true;
}
}
return false;
} else {
if (v[0].first == 0) {
return true;
}
return false;
}
}
int main() {
int N;
scanf("%d", &N);
vector<int> a(N);
for (int i = 0; i < N; i++) {
scanf("%d", &a[i]);
}
printf("%s\n", solve(N, a) ? "Yes" : "No");
}
| insert | 18 | 18 | 18 | 21 | 0 | |
p02975 | C++ | Time Limit Exceeded | #include <algorithm>
#include <cmath>
#include <iostream>
#include <map>
#include <unordered_map>
#include <vector>
using namespace std;
int main() {
int n;
cin >> n;
vector<int> num;
map<int, int> nums;
for (int i = 0; i < n; i++) {
int t;
cin >> t;
num.push_back(t);
if (nums.find(t) != nums.end()) {
nums[t]++;
} else {
nums[t] = 1;
}
}
sort(num.begin(), num.end());
num.erase(unique(num.begin(), num.end()), num.end());
for (int i = 0; i < n; i++) {
for (int j = i + 1; j < n; j++) {
if (i == j)
continue;
int a = num[i];
int b = num[j];
map<int, int> nums2 = nums;
nums2[a]--;
nums2[b]--;
int first = a;
int prev = a;
int cur = b;
for (int k = 2; k < n + 1; k++) {
int next = prev ^ cur;
if (k != n) {
if (nums2.find(next) == nums2.end() || nums2[next] == 0) {
break;
}
prev = cur;
cur = next;
nums2[next]--;
} else {
if (next == first) {
cout << "Yes" << endl;
return 0;
}
}
}
}
}
cout << "No" << endl;
return 0;
}
| #include <algorithm>
#include <cmath>
#include <iostream>
#include <map>
#include <unordered_map>
#include <vector>
using namespace std;
int main() {
int n;
cin >> n;
vector<int> num;
map<int, int> nums;
for (int i = 0; i < n; i++) {
int t;
cin >> t;
num.push_back(t);
if (nums.find(t) != nums.end()) {
nums[t]++;
} else {
nums[t] = 1;
}
}
int a = 0;
for (int i = 0; i < n; i++) {
a ^= num[i];
}
if (a != 0) {
cout << "No" << endl;
return 0;
}
sort(num.begin(), num.end());
num.erase(unique(num.begin(), num.end()), num.end());
for (int i = 0; i < n; i++) {
for (int j = i + 1; j < n; j++) {
if (i == j)
continue;
int a = num[i];
int b = num[j];
map<int, int> nums2 = nums;
nums2[a]--;
nums2[b]--;
int first = a;
int prev = a;
int cur = b;
for (int k = 2; k < n + 1; k++) {
int next = prev ^ cur;
if (k != n) {
if (nums2.find(next) == nums2.end() || nums2[next] == 0) {
break;
}
prev = cur;
cur = next;
nums2[next]--;
} else {
if (next == first) {
cout << "Yes" << endl;
return 0;
}
}
}
}
}
cout << "No" << endl;
return 0;
}
| insert | 22 | 22 | 22 | 30 | TLE | |
p02975 | C++ | Time Limit Exceeded | #include <bits/stdc++.h>
using namespace std;
#define finish(x) return cout << x << endl, 0
#define ll long long
int n;
vector<int> a;
vector<int> calc(int x, int y) {
vector<int> ret = {x, y};
for (int i = 0; i < n - 2; i++) {
ret.push_back(ret[(int)ret.size() - 2] ^ ret.back());
}
return ret;
}
int main() {
ios_base::sync_with_stdio(0);
cin.tie(0);
cin >> n;
a.resize(n);
for (auto &i : a)
cin >> i;
set<int> s(a.begin(), a.end());
if (s.size() > 3)
finish("No");
for (auto &i : a) {
for (auto &j : a) {
vector<int> c = calc(i, j);
map<int, int> cnt;
for (auto &i : a)
cnt[i]++;
bool ok = 1;
for (auto &i : c) {
if (cnt[i] == 0)
ok = 0;
cnt[i]--;
}
if (ok)
finish("Yes");
}
}
cout << "No" << endl;
}
| #include <bits/stdc++.h>
using namespace std;
#define finish(x) return cout << x << endl, 0
#define ll long long
int n;
vector<int> a;
vector<int> calc(int x, int y) {
vector<int> ret = {x, y};
for (int i = 0; i < n - 2; i++) {
ret.push_back(ret[(int)ret.size() - 2] ^ ret.back());
}
return ret;
}
int main() {
ios_base::sync_with_stdio(0);
cin.tie(0);
cin >> n;
a.resize(n);
for (auto &i : a)
cin >> i;
set<int> s(a.begin(), a.end());
if (s.size() > 3)
finish("No");
for (auto &i : s) {
for (auto &j : s) {
vector<int> c = calc(i, j);
map<int, int> cnt;
for (auto &i : a)
cnt[i]++;
bool ok = 1;
for (auto &i : c) {
if (cnt[i] == 0)
ok = 0;
cnt[i]--;
}
if (ok)
finish("Yes");
}
}
cout << "No" << endl;
}
| replace | 25 | 27 | 25 | 27 | TLE | |
p02975 | C++ | Runtime Error | #include <bits/stdc++.h>
//----***やべーやつら***----
using namespace std;
#define int long long
//----***型定義***----
using ll = long long;
using P = pair<int, int>;
//----***Like a Pythonista***----
#define REP(ii, jj, nn) for (ll ii = jj; ii < (nn); ii++)
#define RREP(ii, nn, jj) for (ll ii = nn; jj < ii; ii--)
#define each(i, ...) for (auto &&i : __VA_ARGS__)
#define ALL(vec) (vec).begin(), (vec).end()
#define sum(...) accumulate(ALL(__VA_ARGS__), 0LL)
#define dsum(...) accumulate(ALL(__VA_ARGS__), 0.0)
#define vec(type, name, ...) vector<type> name(__VA_ARGS__)
template <class T> inline auto max(const T &a) { return *max_element(ALL(a)); }
template <class T> inline auto min(const T &a) { return *min_element(ALL(a)); }
inline ll gcd(ll a, ll b) {
if (b == 0)
return a;
return gcd(b, a % b);
}
inline ll lcm(ll a, ll b) {
ll g = gcd(a, b);
return a / g * b;
}
//----***定数***----
#define MOD 1000000007
#define INF 100000000000000000
#define EPS 1e-9
const vector<vector<int>> DXY = {{-1, 0}, {1, 0}, {0, -1}, {0, 1}};
//----***パーツ***----
#define fi first
#define se second
#define pb push_back
#define re return
#define br break
//----***入出力***---
void print() { std::cout << "\n"; }
template <class T> void print(const T &x) { std::cout << x << "\n"; }
template <class T, class... Args> void print(const T &x, const Args &...args) {
std::cout << x << " ";
print(args...);
}
#define debug(var) \
do { \
std::cerr << #var << " ↓ " \
<< "\n"; \
view(var); \
} while (0);
#define dbg cerr << "🥺🥺🥺🥺🥺🥺" << endl;
template <typename T> void view(T e) { std::cout << e << std::endl; }
template <typename T> void view(const std::vector<T> &v) {
for (const auto &e : v) {
std::cout << e << " ";
}
std::cout << std::endl;
}
template <typename T> void view(const std::vector<std::vector<T>> &vv) {
for (const auto &v : vv) {
view(v);
}
}
//----***初期時読み込み***----
struct initial {
initial() {
cin.tie(0);
ios::sync_with_stdio(0);
cout << fixed << setprecision(15);
};
} initial_;
signed main() {
int N;
cin >> N;
map<int, int> mp;
int a;
REP(i, 0, N) {
cin >> a;
mp[a]++;
}
if (mp[0] == N) {
print("Yes");
re 0;
}
if (N % 3 != 0) {
print("No");
re 0;
}
vector<int> keys;
each(m, mp) {
for (int i = 0; i < m.second / (N / 3); i++) {
keys.pb(m.first);
}
}
if ((keys.size() == 3) && (keys[0] ^ keys[1] ^ keys[keys[2]] == 0)) {
print("Yes");
re 0;
}
print("No");
}
| #include <bits/stdc++.h>
//----***やべーやつら***----
using namespace std;
#define int long long
//----***型定義***----
using ll = long long;
using P = pair<int, int>;
//----***Like a Pythonista***----
#define REP(ii, jj, nn) for (ll ii = jj; ii < (nn); ii++)
#define RREP(ii, nn, jj) for (ll ii = nn; jj < ii; ii--)
#define each(i, ...) for (auto &&i : __VA_ARGS__)
#define ALL(vec) (vec).begin(), (vec).end()
#define sum(...) accumulate(ALL(__VA_ARGS__), 0LL)
#define dsum(...) accumulate(ALL(__VA_ARGS__), 0.0)
#define vec(type, name, ...) vector<type> name(__VA_ARGS__)
template <class T> inline auto max(const T &a) { return *max_element(ALL(a)); }
template <class T> inline auto min(const T &a) { return *min_element(ALL(a)); }
inline ll gcd(ll a, ll b) {
if (b == 0)
return a;
return gcd(b, a % b);
}
inline ll lcm(ll a, ll b) {
ll g = gcd(a, b);
return a / g * b;
}
//----***定数***----
#define MOD 1000000007
#define INF 100000000000000000
#define EPS 1e-9
const vector<vector<int>> DXY = {{-1, 0}, {1, 0}, {0, -1}, {0, 1}};
//----***パーツ***----
#define fi first
#define se second
#define pb push_back
#define re return
#define br break
//----***入出力***---
void print() { std::cout << "\n"; }
template <class T> void print(const T &x) { std::cout << x << "\n"; }
template <class T, class... Args> void print(const T &x, const Args &...args) {
std::cout << x << " ";
print(args...);
}
#define debug(var) \
do { \
std::cerr << #var << " ↓ " \
<< "\n"; \
view(var); \
} while (0);
#define dbg cerr << "🥺🥺🥺🥺🥺🥺" << endl;
template <typename T> void view(T e) { std::cout << e << std::endl; }
template <typename T> void view(const std::vector<T> &v) {
for (const auto &e : v) {
std::cout << e << " ";
}
std::cout << std::endl;
}
template <typename T> void view(const std::vector<std::vector<T>> &vv) {
for (const auto &v : vv) {
view(v);
}
}
//----***初期時読み込み***----
struct initial {
initial() {
cin.tie(0);
ios::sync_with_stdio(0);
cout << fixed << setprecision(15);
};
} initial_;
signed main() {
int N;
cin >> N;
map<int, int> mp;
int a;
REP(i, 0, N) {
cin >> a;
mp[a]++;
}
if (mp[0] == N) {
print("Yes");
re 0;
}
if (N % 3 != 0) {
print("No");
re 0;
}
vector<int> keys;
each(m, mp) {
for (int i = 0; i < m.second / (N / 3); i++) {
keys.pb(m.first);
}
}
if (keys.size() == 3 && (keys[0] ^ keys[1] ^ keys[2]) == 0) {
print("Yes");
re 0;
}
print("No");
}
| replace | 102 | 103 | 102 | 103 | 0 | |
p02975 | C++ | Time Limit Exceeded | #include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef string str;
typedef vector<int> vint;
typedef vector<double> vdou;
typedef vector<ll> vll;
typedef vector<vint> vvint;
typedef vector<str> vstr;
typedef pair<int, int> pii;
typedef vector<pii> vpii;
#define REP(i, n) for (ll(i) = 0; (i) < (ll)(n); i++)
#define FOR(i, a, b) for (ll(i) = a; (i) < (ll)b; i++)
#define ALL(v) (v).begin(), (v).end()
#define MOD 1000000007
#define NIL -1
#define FI first
#define SE second
#define MP make_pair
#define PB push_back
#define SZ(x) (ll) x.size()
#define SP(x) setprecision((ll)x)
const int INF = 1e9;
const ll LINF = 1e18;
const double EPS = 1e-9;
const double PI = M_PI;
const int dx[4] = {1, 0, -1, 0};
const int dy[4] = {0, 1, 0, -1};
ll gcd(ll a, ll b) { return b ? gcd(b, a % b) : a; } // 最大公約数
ll lcm(ll a, ll b) { return a / gcd(a, b) * b; } // 最小公倍数
//-------------------------------------------------
//
void yes() { cout << "Yes" << endl; }
void no() { cout << "No" << endl; }
//-------------------------------------------------
// メモ
/*
*/
//-------------------------------------------------
int main() {
cin.tie(0);
ios::sync_with_stdio(false);
int n;
cin >> n;
vll num(n);
set<ll> S;
REP(i, n) {
cin >> num[i];
S.insert(num[i]);
}
if (SZ(S) >= 4) {
no();
} else {
while (1) {
}
}
return 0;
}
| #include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef string str;
typedef vector<int> vint;
typedef vector<double> vdou;
typedef vector<ll> vll;
typedef vector<vint> vvint;
typedef vector<str> vstr;
typedef pair<int, int> pii;
typedef vector<pii> vpii;
#define REP(i, n) for (ll(i) = 0; (i) < (ll)(n); i++)
#define FOR(i, a, b) for (ll(i) = a; (i) < (ll)b; i++)
#define ALL(v) (v).begin(), (v).end()
#define MOD 1000000007
#define NIL -1
#define FI first
#define SE second
#define MP make_pair
#define PB push_back
#define SZ(x) (ll) x.size()
#define SP(x) setprecision((ll)x)
const int INF = 1e9;
const ll LINF = 1e18;
const double EPS = 1e-9;
const double PI = M_PI;
const int dx[4] = {1, 0, -1, 0};
const int dy[4] = {0, 1, 0, -1};
ll gcd(ll a, ll b) { return b ? gcd(b, a % b) : a; } // 最大公約数
ll lcm(ll a, ll b) { return a / gcd(a, b) * b; } // 最小公倍数
//-------------------------------------------------
//
void yes() { cout << "Yes" << endl; }
void no() { cout << "No" << endl; }
//-------------------------------------------------
// メモ
/*
*/
//-------------------------------------------------
int main() {
cin.tie(0);
ios::sync_with_stdio(false);
int n;
cin >> n;
vll num(n);
set<ll> S;
REP(i, n) {
cin >> num[i];
S.insert(num[i]);
}
if (SZ(S) >= 4) {
no();
} else {
if (SZ(S) == 1) {
auto itr = S.begin();
ll a = (*itr);
bool f = (ll)(a ^ a) == a;
if (f) {
yes();
} else {
no();
}
} else if (SZ(S) == 2) {
auto itr = S.begin();
ll a = (*itr);
itr++;
ll b = (*itr);
int cnta = 0;
int cntb = 0;
REP(i, n) {
if (num[i] == a) {
cnta++;
} else {
cntb++;
}
}
if (2 * cnta == cntb && (ll)(a ^ b) == b) {
yes();
} else {
no();
}
} else {
auto itr = S.begin();
ll a = (*itr);
itr++;
ll b = (*itr);
itr++;
ll c = (*itr);
if ((ll)(a ^ b) != c) {
no();
return 0;
}
int cnta = 0;
int cntb = 0;
int cntc = 0;
REP(i, n) {
if (num[i] == a) {
cnta++;
} else if (num[i] == b) {
cntb++;
} else if (num[i] == c) {
cntc++;
}
}
if (max({cnta, cntb, cntc}) == min({cnta, cntb, cntc})) {
yes();
} else {
no();
}
}
}
return 0;
} | replace | 65 | 66 | 65 | 121 | TLE | |
p02975 | C++ | Runtime Error | #include <bits/stdc++.h>
using namespace std;
#define rep(i, a, b) for (int i = (a); i <= (b); ++i)
#define rrep(i, a, b) for (int i = (a); i >= (b); --i)
#define PB push_back
#define MP make_pair
#define PII pair<int, int>
typedef long long LL;
const LL MOD = 998244353;
const int INF = 0x3fffffff;
const int N = 100010;
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
int n, x;
int main() {
#ifndef ONLINE_JUDGE
freopen("test.in", "r", stdin);
#endif
ios::sync_with_stdio(false);
cin.tie(0);
cin >> n;
map<int, int> cnt;
rep(i, 1, n) cin >> x, cnt[x]++;
if (cnt.size() <= 3) {
int a[4], b[4], m = 0;
for (auto x : cnt) {
a[++m] = x.first;
b[m] = x.second;
}
// rep(i,1,m)cout<<a[i]<<" "<<b[i]<<endl;
bool flag = false;
if (m == 1 && a[1] == 0)
flag = true;
if (m == 2 && b[1] == b[2] * 2 && (a[1] ^ a[1] ^ a[2]) == 0)
flag = true;
if (m == 2 && b[1] * 2 == b[2] && (a[1] ^ a[2] ^ a[2]) == 0)
flag = true;
if (m == 3 && b[1] == b[2] && b[1] == b[3] && (a[1] ^ a[2] ^ a[3]) == 0)
flag = true;
if (flag) {
cout << "Yes\n";
return 0;
}
}
cout << "No\n";
return 0;
} | #include <bits/stdc++.h>
using namespace std;
#define rep(i, a, b) for (int i = (a); i <= (b); ++i)
#define rrep(i, a, b) for (int i = (a); i >= (b); --i)
#define PB push_back
#define MP make_pair
#define PII pair<int, int>
typedef long long LL;
const LL MOD = 998244353;
const int INF = 0x3fffffff;
const int N = 100010;
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
int n, x;
int main() {
ios::sync_with_stdio(false);
cin.tie(0);
cin >> n;
map<int, int> cnt;
rep(i, 1, n) cin >> x, cnt[x]++;
if (cnt.size() <= 3) {
int a[4], b[4], m = 0;
for (auto x : cnt) {
a[++m] = x.first;
b[m] = x.second;
}
// rep(i,1,m)cout<<a[i]<<" "<<b[i]<<endl;
bool flag = false;
if (m == 1 && a[1] == 0)
flag = true;
if (m == 2 && b[1] == b[2] * 2 && (a[1] ^ a[1] ^ a[2]) == 0)
flag = true;
if (m == 2 && b[1] * 2 == b[2] && (a[1] ^ a[2] ^ a[2]) == 0)
flag = true;
if (m == 3 && b[1] == b[2] && b[1] == b[3] && (a[1] ^ a[2] ^ a[3]) == 0)
flag = true;
if (flag) {
cout << "Yes\n";
return 0;
}
}
cout << "No\n";
return 0;
} | delete | 16 | 19 | 16 | 16 | 0 | |
p02975 | C++ | Time Limit Exceeded | #include <algorithm>
#include <array>
#include <cmath>
#include <cstdio>
#include <map>
#include <memory.h>
#include <queue>
#include <set>
#include <stack>
#include <string>
#include <vector>
using namespace std;
void re(int &x);
template <class T> void re(std::vector<T> &a);
void pr(const char *x);
void ps();
template <class T, class... Ts> void ps(const T &t, const Ts &...ts);
#ifdef FFDBG
#else
#define dbg(x...) dsfdsfsdfasd
#endif
typedef vector<int> vi;
int n;
void solve() {
re(n);
vi a(n);
re(a);
vi h(n, -1);
h[0] = 0;
for (int i = 2; i != 0; i = (i + 2) % n) {
h[i] = (h[(i + n - 2) % n] ^ a[(i + n - 1) % n]);
}
if ((h[0] ^ h[n - 2]) != a[n - 1]) {
ps("No");
return;
}
if (h[1] == -1) {
h[1] = 0;
for (int i = 3; i != 0; i = (i + 2) % n) {
h[i] = (h[(i + n - 2) % n] ^ a[(i + n - 1) % n]);
}
if ((h[1] ^ h[n - 1]) != a[0]) {
ps("No");
return;
}
}
ps("Yes");
}
int main() { solve(); }
void re(int &x) { scanf("%d", &x); }
template <class T> void re(std::vector<T> &a) {
for (int i = 0; i < a.size(); i++)
re(a[i]);
}
void pr(const char *x) { printf("%s", x); }
void ps() { pr("\n"); }
template <class T, class... Ts> void ps(const T &t, const Ts &...ts) {
pr(t);
if (sizeof...(ts))
pr(" ");
ps(ts...);
}
| #include <algorithm>
#include <array>
#include <cmath>
#include <cstdio>
#include <map>
#include <memory.h>
#include <queue>
#include <set>
#include <stack>
#include <string>
#include <vector>
using namespace std;
void re(int &x);
template <class T> void re(std::vector<T> &a);
void pr(const char *x);
void ps();
template <class T, class... Ts> void ps(const T &t, const Ts &...ts);
#ifdef FFDBG
#else
#define dbg(x...) dsfdsfsdfasd
#endif
typedef vector<int> vi;
int n;
void solve() {
re(n);
vi a(n);
re(a);
vi h(n, -1);
h[0] = 0;
for (int i = 2; i != 0; i = (i + 2) % n) {
h[i] = (h[(i + n - 2) % n] ^ a[(i + n - 1) % n]);
}
if ((h[0] ^ h[n - 2]) != a[n - 1]) {
ps("No");
return;
}
if (h[1] == -1) {
h[1] = 0;
for (int i = 3; i != 1; i = (i + 2) % n) {
h[i] = (h[(i + n - 2) % n] ^ a[(i + n - 1) % n]);
}
if ((h[1] ^ h[n - 1]) != a[0]) {
ps("No");
return;
}
}
ps("Yes");
}
int main() { solve(); }
void re(int &x) { scanf("%d", &x); }
template <class T> void re(std::vector<T> &a) {
for (int i = 0; i < a.size(); i++)
re(a[i]);
}
void pr(const char *x) { printf("%s", x); }
void ps() { pr("\n"); }
template <class T, class... Ts> void ps(const T &t, const Ts &...ts) {
pr(t);
if (sizeof...(ts))
pr(" ");
ps(ts...);
}
| replace | 52 | 53 | 52 | 53 | TLE | |
p02975 | C++ | Runtime Error | #include <bits/stdc++.h>
using namespace std;
typedef long long ll;
#define int ll
#define REP(i, n) for (int i = 0; i < n; ++i)
#define ALL(name) name.begin(), name.end()
#define SORT(name) sort(name.begin(), name.end())
#define ZERO(p) memset(p, 0, sizeof(p))
#define MINUS(p) memset(p, -1, sizeof(p))
#if 1
#define DBG(fmt, ...) printf(fmt, ##__VA_ARGS__)
#else
#define DBG(fmt, ...)
#endif
const ll LLINF = (1LL << 60);
const int INF = (1LL << 30);
const double DINF = std::numeric_limits<double>::infinity();
const int MOD = 1000000007;
#define MAX_N 100010
ll N;
vector<ll> A;
map<ll, ll> A_map;
signed main() {
cin.tie(0);
cout.tie(0);
ios::sync_with_stdio(false);
cin >> N;
A.resize(N);
REP(i, N) {
cin >> A[i];
A_map[A[i]]++;
}
if (A_map.size() == 3) {
vector<ll> val(3);
ll j = 0;
for (auto &a_tmp : A_map) {
if (a_tmp.second != N / 3) {
printf("No\n");
return 0;
}
val[j] = a_tmp.first;
j++;
}
if (val[0] == (val[1] ^ val[2]) && val[1] == (val[0] ^ val[2]) &&
val[2] == (val[1] ^ val[0])) {
printf("Yes\n");
return 0;
}
} else if (A_map.size() == 2) {
assert(false);
} else if (A_map.size() == 1) {
for (auto &a_tmp : A_map) {
if (a_tmp.first != 0) {
printf("No\n");
} else {
printf("Yes\n");
}
return 0;
}
}
printf("No\n");
return 0;
}
| #include <bits/stdc++.h>
using namespace std;
typedef long long ll;
#define int ll
#define REP(i, n) for (int i = 0; i < n; ++i)
#define ALL(name) name.begin(), name.end()
#define SORT(name) sort(name.begin(), name.end())
#define ZERO(p) memset(p, 0, sizeof(p))
#define MINUS(p) memset(p, -1, sizeof(p))
#if 1
#define DBG(fmt, ...) printf(fmt, ##__VA_ARGS__)
#else
#define DBG(fmt, ...)
#endif
const ll LLINF = (1LL << 60);
const int INF = (1LL << 30);
const double DINF = std::numeric_limits<double>::infinity();
const int MOD = 1000000007;
#define MAX_N 100010
ll N;
vector<ll> A;
map<ll, ll> A_map;
signed main() {
cin.tie(0);
cout.tie(0);
ios::sync_with_stdio(false);
cin >> N;
A.resize(N);
REP(i, N) {
cin >> A[i];
A_map[A[i]]++;
}
if (A_map.size() == 3) {
vector<ll> val(3);
ll j = 0;
for (auto &a_tmp : A_map) {
if (a_tmp.second != N / 3) {
printf("No\n");
return 0;
}
val[j] = a_tmp.first;
j++;
}
if (val[0] == (val[1] ^ val[2]) && val[1] == (val[0] ^ val[2]) &&
val[2] == (val[1] ^ val[0])) {
printf("Yes\n");
return 0;
}
} else if (A_map.size() == 2) {
vector<ll> val(2);
for (auto &a_tmp : A_map) {
if (a_tmp.first == 0) {
val[0] = a_tmp.second;
} else {
val[1] = a_tmp.second;
}
}
if (val[1] == (N / 3) * 2 && val[0] == N / 3) {
printf("Yes\n");
} else {
printf("No\n");
}
return 0;
} else if (A_map.size() == 1) {
for (auto &a_tmp : A_map) {
if (a_tmp.first != 0) {
printf("No\n");
} else {
printf("Yes\n");
}
return 0;
}
}
printf("No\n");
return 0;
}
| replace | 58 | 59 | 58 | 72 | 0 | |
p02975 | C++ | Runtime Error | #include <bits/stdc++.h>
#define REP(i, n) for (long long i = 0; i < (n); i++)
using namespace std;
using ll = long long;
int main() {
cin.tie(0)->sync_with_stdio(false);
ll n;
cin >> n;
ll cnt0 = 0;
map<ll, ll> hat;
REP(i, n) {
ll tmp;
cin >> tmp;
if (tmp == 0)
cnt0++;
hat[tmp]++;
}
bool ok = false;
if (cnt0 == n)
ok = true;
else if (hat.size() == 2) {
if (hat.count(0)) {
ll cnt = 0;
for (auto i : hat)
if (i.first != 0)
cnt = i.second;
if (cnt0 * 2 == cnt)
ok = true;
}
} else if (!(n % 3)) {
ll val[3];
ll cnt[3];
ll i = 0;
for (auto itr : hat) {
val[i] = itr.first;
cnt[i] = itr.second;
i++;
}
if (cnt[0] == cnt[1] && cnt[1] == cnt[2])
if (((val[0] ^ val[1]) ^ val[2]) == 0)
ok = true;
}
if (ok)
cout << "Yes" << '\n';
else
cout << "No" << '\n';
return 0;
}
| #include <bits/stdc++.h>
#define REP(i, n) for (long long i = 0; i < (n); i++)
using namespace std;
using ll = long long;
int main() {
cin.tie(0)->sync_with_stdio(false);
ll n;
cin >> n;
ll cnt0 = 0;
map<ll, ll> hat;
REP(i, n) {
ll tmp;
cin >> tmp;
if (tmp == 0)
cnt0++;
hat[tmp]++;
}
bool ok = false;
if (cnt0 == n)
ok = true;
else if (hat.size() == 2) {
if (hat.count(0)) {
ll cnt = 0;
for (auto i : hat)
if (i.first != 0)
cnt = i.second;
if (cnt0 * 2 == cnt)
ok = true;
}
} else if (hat.size() == 3) {
ll val[3];
ll cnt[3];
ll i = 0;
for (auto itr : hat) {
val[i] = itr.first;
cnt[i] = itr.second;
i++;
}
if (cnt[0] == cnt[1] && cnt[1] == cnt[2])
if (((val[0] ^ val[1]) ^ val[2]) == 0)
ok = true;
}
if (ok)
cout << "Yes" << '\n';
else
cout << "No" << '\n';
return 0;
}
| replace | 33 | 34 | 33 | 34 | 0 | |
p02975 | C++ | Time Limit Exceeded | // A.
#include <algorithm>
#include <cstdio>
#include <cstdlib>
#include <iostream>
#include <map>
#include <set>
#include <sstream>
#include <vector>
using namespace std;
int main(int argc, char *argv[]) {
int n;
cin >> n;
vector<int> a(n);
map<int, int> m;
for (int i = 0; i < n; ++i) {
cin >> a[i];
m[a[i]] += 1;
}
set<int> s(a.begin(), a.end());
vector<int> v(n);
for (int t = 0; t < 10000; ++t) {
int p = a[rand() % n];
int q = a[rand() % n];
int x = p ^ q;
if (s.find(x) != s.end()) {
map<int, int> r = m;
r[p] -= 1;
r[q] -= 1;
r[x] -= 1;
if (r[x] >= 0) {
v[0] = p;
v[1] = q;
v[2] = x;
int i;
for (i = 3; i < n; ++i) {
x = v[i - 2] ^ v[i - 1];
v[i] = x;
r[x] -= 1;
if (r[x] < 0) {
break;
}
}
if (i >= n && (v[0] == (v[1] ^ v[n - 1]))) {
cout << "Yes" << endl;
return 0;
}
}
}
}
cout << "No" << endl;
return 0;
}
| // A.
#include <algorithm>
#include <cstdio>
#include <cstdlib>
#include <iostream>
#include <map>
#include <set>
#include <sstream>
#include <vector>
using namespace std;
int main(int argc, char *argv[]) {
int n;
cin >> n;
vector<int> a(n);
map<int, int> m;
for (int i = 0; i < n; ++i) {
cin >> a[i];
m[a[i]] += 1;
}
set<int> s(a.begin(), a.end());
vector<int> v(n);
for (int t = 0; t < 500; ++t) {
int ar = rand() % n, br = rand() % n;
if (ar == br)
continue;
int p = a[ar];
int q = a[br];
int x = p ^ q;
if (s.find(x) != s.end()) {
map<int, int> r = m;
r[p] -= 1;
r[q] -= 1;
r[x] -= 1;
if (r[x] >= 0) {
v[0] = p;
v[1] = q;
v[2] = x;
int i;
for (i = 3; i < n; ++i) {
x = v[i - 2] ^ v[i - 1];
v[i] = x;
r[x] -= 1;
if (r[x] < 0) {
break;
}
}
if (i >= n && (v[0] == (v[1] ^ v[n - 1]))) {
cout << "Yes" << endl;
return 0;
}
}
}
}
cout << "No" << endl;
return 0;
}
| replace | 24 | 27 | 24 | 30 | TLE | |
p02975 | C++ | Runtime Error | #include <algorithm>
#include <bitset>
#include <cstdio>
#include <cstdlib>
#include <iostream>
#include <queue>
#include <vector>
using namespace std;
#define INF 1000000000000
#define MAX 1000000000000000000
typedef long long ll;
typedef pair<ll, int> P;
typedef pair<pair<int, int>, int> p;
#define bit(n, k) ((n >> k) & 1) /*nのk bit目*/
int main() {
int N, count = 0;
cin >> N;
ll a;
vector<P> V;
for (int i = 0; i < N; i++) {
bool flag = false;
cin >> a;
for (int i = 0; i < (int)V.size(); i++) {
if (V[i].first == a) {
V[i].second++;
flag = true;
}
}
if (V.size() >= 4) {
cout << "No" << endl;
return 0;
}
if (flag)
continue;
V.push_back(P(a, 1));
}
if ((int)V.size() == 3) {
return 1;
if (V[0].first ^ V[1].first ^ V[2].first == 0 &&
V[0].second == V[1].second && V[1].second == V[2].second) {
cout << "Yes" << endl;
} else
cout << "No" << endl;
} else if ((int)V.size() == 2) {
if ((V[0].first == 0 && V[0].second * 2 == V[1].second) ||
(V[1].first == 0 && V[1].second * 2 == V[0].second)) {
cout << "Yes" << endl;
} else
cout << "No" << endl;
} else if ((int)V.size() == 1) {
if (V[0].first == 0)
cout << "Yes" << endl;
else
cout << "No" << endl;
} else
cout << "No" << endl;
} | #include <algorithm>
#include <bitset>
#include <cstdio>
#include <cstdlib>
#include <iostream>
#include <queue>
#include <vector>
using namespace std;
#define INF 1000000000000
#define MAX 1000000000000000000
typedef long long ll;
typedef pair<ll, int> P;
typedef pair<pair<int, int>, int> p;
#define bit(n, k) ((n >> k) & 1) /*nのk bit目*/
int main() {
int N, count = 0;
cin >> N;
ll a;
vector<P> V;
for (int i = 0; i < N; i++) {
bool flag = false;
cin >> a;
for (int i = 0; i < (int)V.size(); i++) {
if (V[i].first == a) {
V[i].second++;
flag = true;
}
}
if (V.size() >= 4) {
cout << "No" << endl;
return 0;
}
if (flag)
continue;
V.push_back(P(a, 1));
}
if ((int)V.size() == 3) {
int x = V[0].first ^ V[1].first;
x ^= V[2].first;
if (x == 0 && V[0].second == V[1].second && V[1].second == V[2].second) {
cout << "Yes" << endl;
} else
cout << "No" << endl;
} else if ((int)V.size() == 2) {
if ((V[0].first == 0 && V[0].second * 2 == V[1].second) ||
(V[1].first == 0 && V[1].second * 2 == V[0].second)) {
cout << "Yes" << endl;
} else
cout << "No" << endl;
} else if ((int)V.size() == 1) {
if (V[0].first == 0)
cout << "Yes" << endl;
else
cout << "No" << endl;
} else
cout << "No" << endl;
} | replace | 38 | 41 | 38 | 41 | 1 | |
p02975 | C++ | Time Limit Exceeded | #include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef unsigned long long ull;
typedef pair<ll, ll> P;
#define fi first
#define se second
#define repl(i, a, b) for (ll i = (ll)(a); i < (ll)(b); i++)
#define rep(i, n) repl(i, 0, n)
#define all(x) (x).begin(), (x).end()
#define dbg(x) cout << #x "=" << x << endl
#define mmax(x, y) (x > y ? x : y)
#define mmin(x, y) (x < y ? x : y)
#define maxch(x, y) x = mmax(x, y)
#define minch(x, y) x = mmin(x, y)
#define uni(x) x.erase(unique(all(x)), x.end())
#define exist(x, y) (find(all(x), y) != x.end())
#define bcnt __builtin_popcountll
#define INF 1e16
#define mod 1000000007
ll n;
ll a[100001];
vector<ll> vs;
map<ll, ll> tot;
int main() {
cin.tie(0);
ios::sync_with_stdio(false);
cin >> n;
rep(i, n) {
cin >> a[i];
vs.push_back(a[i]);
tot[a[i]]++;
}
sort(all(vs));
uni(vs);
rep(i, vs.size()) rep(j, vs.size()) {
bool ok = true;
map<ll, ll> cnt = tot;
ll b[3];
b[0] = vs[i];
b[1] = vs[j];
b[2] = vs[i] ^ vs[j];
rep(k, n) {
if (cnt[b[k % 3]] == 0)
ok = false;
cnt[b[k % 3]]--;
}
if (ok) {
cout << "Yes" << endl;
return 0;
}
}
cout << "No" << endl;
return 0;
}
| #include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef unsigned long long ull;
typedef pair<ll, ll> P;
#define fi first
#define se second
#define repl(i, a, b) for (ll i = (ll)(a); i < (ll)(b); i++)
#define rep(i, n) repl(i, 0, n)
#define all(x) (x).begin(), (x).end()
#define dbg(x) cout << #x "=" << x << endl
#define mmax(x, y) (x > y ? x : y)
#define mmin(x, y) (x < y ? x : y)
#define maxch(x, y) x = mmax(x, y)
#define minch(x, y) x = mmin(x, y)
#define uni(x) x.erase(unique(all(x)), x.end())
#define exist(x, y) (find(all(x), y) != x.end())
#define bcnt __builtin_popcountll
#define INF 1e16
#define mod 1000000007
ll n;
ll a[100001];
vector<ll> vs;
map<ll, ll> tot;
int main() {
cin.tie(0);
ios::sync_with_stdio(false);
cin >> n;
rep(i, n) {
cin >> a[i];
vs.push_back(a[i]);
tot[a[i]]++;
}
sort(all(vs));
uni(vs);
if (vs.size() > 3) {
cout << "No" << endl;
return 0;
}
rep(i, vs.size()) rep(j, vs.size()) {
bool ok = true;
map<ll, ll> cnt = tot;
ll b[3];
b[0] = vs[i];
b[1] = vs[j];
b[2] = vs[i] ^ vs[j];
rep(k, n) {
if (cnt[b[k % 3]] == 0)
ok = false;
cnt[b[k % 3]]--;
}
if (ok) {
cout << "Yes" << endl;
return 0;
}
}
cout << "No" << endl;
return 0;
}
| insert | 41 | 41 | 41 | 45 | TLE | |
p02976 | Python | Runtime Error | #!/usr/bin/env python3
import sys
sys.setrecursionlimit(100000)
n, m = [int(x) for x in input().split()]
edges = []
g = [[] for _ in range(n)]
for _ in range(m):
a, b = [int(x) for x in input().split()]
a -= 1
b -= 1
e = len(edges)
g[a].append(e)
g[b].append(e)
edges.append((a, b))
if m % 2 == 1:
print(-1)
sys.exit(0)
visited = [False] * n
visitede = [False] * m
def build_stree(i):
cts = []
for e in g[i]:
j = edges[e][1 if edges[e][0] == i else 0]
if visited[j]:
continue
visitede[e] = True
visited[j] = True
cts.append((e, build_stree(j)))
return i, cts
visited[0] = True
st = build_stree(0)
rev_e = [None if v else False for v in visitede]
def pos(t):
i, cts = t
for _, ct in cts:
pos(ct)
es = [e for e in g[i] if rev_e[e] is None]
assert len(es) <= 1
if not es:
return
f = es[0]
rev_e[f] = (sum((edges[e][0] == i) ^ rev_e[e] for e in g[i] if e != f) % 2 != 0) ^ (
edges[f][0] == i
)
pos(st)
for ed, re in zip(edges, rev_e):
if re:
b, a = ed
else:
a, b = ed
print(a + 1, b + 1)
| #!/usr/bin/env python3
import sys
sys.setrecursionlimit(1000000)
n, m = [int(x) for x in input().split()]
edges = []
g = [[] for _ in range(n)]
for _ in range(m):
a, b = [int(x) for x in input().split()]
a -= 1
b -= 1
e = len(edges)
g[a].append(e)
g[b].append(e)
edges.append((a, b))
if m % 2 == 1:
print(-1)
sys.exit(0)
visited = [False] * n
visitede = [False] * m
def build_stree(i):
cts = []
for e in g[i]:
j = edges[e][1 if edges[e][0] == i else 0]
if visited[j]:
continue
visitede[e] = True
visited[j] = True
cts.append((e, build_stree(j)))
return i, cts
visited[0] = True
st = build_stree(0)
rev_e = [None if v else False for v in visitede]
def pos(t):
i, cts = t
for _, ct in cts:
pos(ct)
es = [e for e in g[i] if rev_e[e] is None]
assert len(es) <= 1
if not es:
return
f = es[0]
rev_e[f] = (sum((edges[e][0] == i) ^ rev_e[e] for e in g[i] if e != f) % 2 != 0) ^ (
edges[f][0] == i
)
pos(st)
for ed, re in zip(edges, rev_e):
if re:
b, a = ed
else:
a, b = ed
print(a + 1, b + 1)
| replace | 4 | 5 | 4 | 5 | 0 | |
p02976 | C++ | Runtime Error | #define _CRT_SECURE_NO_WARNINGS
#define _SCL_SECURE_NO_WARNINGS
#include <algorithm>
#include <bitset>
#include <cassert>
#include <cmath>
#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <fstream>
#include <functional>
#include <iomanip>
#include <iostream>
#include <limits>
#include <list>
#include <map>
#include <numeric>
#include <queue>
#include <set>
#include <sstream>
#include <stack>
#include <string>
#include <utility>
#include <valarray>
#include <vector>
using namespace std;
typedef unsigned int uint;
typedef long long LL;
typedef unsigned long long ULL;
typedef pair<LL, LL> PP;
#define REP(i, a, n) for (LL i = (a), i##_max = (n); i < i##_max; ++i)
#define REM(i, a, n) for (LL i = (LL)(n)-1, i##min = (a); i >= i##min; --i)
#define ALL(arr) (arr).begin(), (arr).end()
#define FLOAT fixed << setprecision(16)
#define SPEEDUP \
{ \
cin.tie(NULL); \
ios::sync_with_stdio(false); \
}
const int INF = 0x3FFFFFFF;
const LL INFLL = 0x3FFFFFFF3FFFFFFF;
const double INFD = 1.0e+308;
const double EPS = 1.0e-9;
void YesNo(bool b) { cout << (b ? "Yes" : "No") << endl; }
void YESNO(bool b) { cout << (b ? "YES" : "NO") << endl; }
template <class T, class U>
istream &operator>>(istream &ist, pair<T, U> &right) {
return ist >> right.first >> right.second;
}
template <class T, class U>
ostream &operator<<(ostream &ost, const pair<T, U> &right) {
return ost << right.first << ' ' << right.second;
}
template <class T, class TCompatible, size_t N>
void Fill(T (&dest)[N], const TCompatible &val) {
fill(dest, dest + N, val);
}
template <class T, class TCompatible, size_t M, size_t N>
void Fill(T (&dest)[M][N], const TCompatible &val) {
for (int i = 0; i < M; ++i)
Fill(dest[i], val);
}
template <class T> T Compare(T left, T right) {
return left > right ? 1 : (left < right ? -1 : 0);
}
istream &Ignore(istream &ist) {
string s;
ist >> s;
return ist;
}
bool Inside(int i, int j, int h, int w) {
return i >= 0 && i < h && j >= 0 && j < w;
}
template <class T> T Next() {
T buf;
cin >> buf;
return buf;
}
#ifdef ONLY_MY_ENVIR
#include "BIT.h"
#include "BinaryMatrix.h"
#include "Factorization.h"
#include "FlowSolver.h"
#include "Graph.h"
#include "IntMod.h"
#include "LazySegmentTree.h"
#include "Math.h"
#include "Matrix.h"
#include "MinMax.h"
#include "Position.h"
#include "Range.h"
#include "Rational.h"
#include "SegmentTree.h"
#include "SegmentTree2D.h"
#include "SuffixArray.h"
#include "Tree.h"
#include "UnionFind.h"
#endif
#ifdef __GNUC__
typedef __int128 LLL;
istream &operator>>(istream &ist, __int128 &val) {
LL tmp;
ist >> tmp;
val = tmp;
return ist;
}
ostream &operator<<(ostream &ost, __int128 val) {
LL tmp = val;
ost << tmp;
return ost;
}
#endif
#if 1234567891
#include <array>
#include <random>
#include <unordered_map>
#include <unordered_set>
template <typename T>
using PriorityQ = priority_queue<T, vector<T>, greater<T>>;
// template <class T>
// auto Is(const T& value) { return [value](const auto& comparand) -> bool {
// return comparand == value; }; }
#endif
int N, M;
vector<int> G[100000];
int used[10000];
void print(int from, int to) { cout << from + 1 << ' ' << to + 1 << endl; }
bool DFS(int from, int prev) {
if (used[from] == 1)
return false;
if (used[from] == 2)
return true;
used[from] = 1;
vector<int> edges;
for (int to : G[from]) {
if (to == prev)
continue;
if (!DFS(to, from)) {
edges.push_back(to);
}
}
int K = edges.size() / 2;
REP(i, 0, K) {
print(from, edges[2 * i]);
print(from, edges[2 * i + 1]);
}
used[from] = 2;
if (edges.size() % 2 == 0) {
return false;
} else {
print(from, edges.back());
print(from, prev);
return true;
}
}
int main() {
cin >> N >> M;
REP(i, 0, M) {
int a, b;
cin >> a >> b;
--a;
--b;
G[a].push_back(b);
G[b].push_back(a);
}
if (M % 2 == 0) {
DFS(0, -1);
} else {
cout << -1 << endl;
}
return 0;
} | #define _CRT_SECURE_NO_WARNINGS
#define _SCL_SECURE_NO_WARNINGS
#include <algorithm>
#include <bitset>
#include <cassert>
#include <cmath>
#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <fstream>
#include <functional>
#include <iomanip>
#include <iostream>
#include <limits>
#include <list>
#include <map>
#include <numeric>
#include <queue>
#include <set>
#include <sstream>
#include <stack>
#include <string>
#include <utility>
#include <valarray>
#include <vector>
using namespace std;
typedef unsigned int uint;
typedef long long LL;
typedef unsigned long long ULL;
typedef pair<LL, LL> PP;
#define REP(i, a, n) for (LL i = (a), i##_max = (n); i < i##_max; ++i)
#define REM(i, a, n) for (LL i = (LL)(n)-1, i##min = (a); i >= i##min; --i)
#define ALL(arr) (arr).begin(), (arr).end()
#define FLOAT fixed << setprecision(16)
#define SPEEDUP \
{ \
cin.tie(NULL); \
ios::sync_with_stdio(false); \
}
const int INF = 0x3FFFFFFF;
const LL INFLL = 0x3FFFFFFF3FFFFFFF;
const double INFD = 1.0e+308;
const double EPS = 1.0e-9;
void YesNo(bool b) { cout << (b ? "Yes" : "No") << endl; }
void YESNO(bool b) { cout << (b ? "YES" : "NO") << endl; }
template <class T, class U>
istream &operator>>(istream &ist, pair<T, U> &right) {
return ist >> right.first >> right.second;
}
template <class T, class U>
ostream &operator<<(ostream &ost, const pair<T, U> &right) {
return ost << right.first << ' ' << right.second;
}
template <class T, class TCompatible, size_t N>
void Fill(T (&dest)[N], const TCompatible &val) {
fill(dest, dest + N, val);
}
template <class T, class TCompatible, size_t M, size_t N>
void Fill(T (&dest)[M][N], const TCompatible &val) {
for (int i = 0; i < M; ++i)
Fill(dest[i], val);
}
template <class T> T Compare(T left, T right) {
return left > right ? 1 : (left < right ? -1 : 0);
}
istream &Ignore(istream &ist) {
string s;
ist >> s;
return ist;
}
bool Inside(int i, int j, int h, int w) {
return i >= 0 && i < h && j >= 0 && j < w;
}
template <class T> T Next() {
T buf;
cin >> buf;
return buf;
}
#ifdef ONLY_MY_ENVIR
#include "BIT.h"
#include "BinaryMatrix.h"
#include "Factorization.h"
#include "FlowSolver.h"
#include "Graph.h"
#include "IntMod.h"
#include "LazySegmentTree.h"
#include "Math.h"
#include "Matrix.h"
#include "MinMax.h"
#include "Position.h"
#include "Range.h"
#include "Rational.h"
#include "SegmentTree.h"
#include "SegmentTree2D.h"
#include "SuffixArray.h"
#include "Tree.h"
#include "UnionFind.h"
#endif
#ifdef __GNUC__
typedef __int128 LLL;
istream &operator>>(istream &ist, __int128 &val) {
LL tmp;
ist >> tmp;
val = tmp;
return ist;
}
ostream &operator<<(ostream &ost, __int128 val) {
LL tmp = val;
ost << tmp;
return ost;
}
#endif
#if 1234567891
#include <array>
#include <random>
#include <unordered_map>
#include <unordered_set>
template <typename T>
using PriorityQ = priority_queue<T, vector<T>, greater<T>>;
// template <class T>
// auto Is(const T& value) { return [value](const auto& comparand) -> bool {
// return comparand == value; }; }
#endif
int N, M;
vector<int> G[100000];
int used[100000];
void print(int from, int to) { cout << from + 1 << ' ' << to + 1 << endl; }
bool DFS(int from, int prev) {
if (used[from] == 1)
return false;
if (used[from] == 2)
return true;
used[from] = 1;
vector<int> edges;
for (int to : G[from]) {
if (to == prev)
continue;
if (!DFS(to, from)) {
edges.push_back(to);
}
}
int K = edges.size() / 2;
REP(i, 0, K) {
print(from, edges[2 * i]);
print(from, edges[2 * i + 1]);
}
used[from] = 2;
if (edges.size() % 2 == 0) {
return false;
} else {
print(from, edges.back());
print(from, prev);
return true;
}
}
int main() {
cin >> N >> M;
REP(i, 0, M) {
int a, b;
cin >> a >> b;
--a;
--b;
G[a].push_back(b);
G[b].push_back(a);
}
if (M % 2 == 0) {
DFS(0, -1);
} else {
cout << -1 << endl;
}
return 0;
} | replace | 131 | 132 | 131 | 132 | 0 | |
p02976 | C++ | Runtime Error | #include <bits/stdc++.h>
using namespace std;
#define int long long
signed main(void) {
int N, M;
cin >> N >> M;
if (M % 2 == 1) {
cout << "-1" << endl;
return 0;
}
vector<vector<int>> to(M);
for (int i = 0; i < M; i++) {
int a, b;
cin >> a >> b;
a--;
b--;
to[a].push_back(b);
to[b].push_back(a);
}
vector<pair<int, int>> depth(N);
for (int i = 0; i < N; i++) {
depth[i] = {-1, i};
}
depth[0] = {0, 0};
queue<int> Q;
Q.push(0);
while (!Q.empty()) {
int p = Q.front();
Q.pop();
for (auto q : to[p]) {
if (depth[q].first != -1) {
continue;
}
depth[q].first = depth[p].first + 1;
Q.push(q);
}
}
sort(depth.rbegin(), depth.rend()); // 深い順にソートする
vector<bool> used(N, false);
vector<bool> even(N, true);
// depthが深いから決めていく
set<pair<int, int>> ans;
for (int i = 0; i < N; i++) {
int p = depth[i].second;
for (auto q : to[p]) {
if (used[q]) {
continue;
} // 全て埋めてしまった点については何も見ない
if (even[p]) { // qからpに辺をはる
even[q] = !even[q];
ans.insert({q, p});
} else { // pからqに辺をはる
even[p] = true;
ans.insert({p, q});
}
}
used[p] = true;
}
for (auto ne : ans) {
cout << ne.first + 1 << " " << ne.second + 1 << endl;
}
return 0;
}
| #include <bits/stdc++.h>
using namespace std;
#define int long long
signed main(void) {
int N, M;
cin >> N >> M;
if (M % 2 == 1) {
cout << "-1" << endl;
return 0;
}
vector<vector<int>> to(N);
for (int i = 0; i < M; i++) {
int a, b;
cin >> a >> b;
a--;
b--;
to[a].push_back(b);
to[b].push_back(a);
}
vector<pair<int, int>> depth(N);
for (int i = 0; i < N; i++) {
depth[i] = {-1, i};
}
depth[0] = {0, 0};
queue<int> Q;
Q.push(0);
while (!Q.empty()) {
int p = Q.front();
Q.pop();
for (auto q : to[p]) {
if (depth[q].first != -1) {
continue;
}
depth[q].first = depth[p].first + 1;
Q.push(q);
}
}
sort(depth.rbegin(), depth.rend()); // 深い順にソートする
vector<bool> used(N, false);
vector<bool> even(N, true);
// depthが深いから決めていく
set<pair<int, int>> ans;
for (int i = 0; i < N; i++) {
int p = depth[i].second;
for (auto q : to[p]) {
if (used[q]) {
continue;
} // 全て埋めてしまった点については何も見ない
if (even[p]) { // qからpに辺をはる
even[q] = !even[q];
ans.insert({q, p});
} else { // pからqに辺をはる
even[p] = true;
ans.insert({p, q});
}
}
used[p] = true;
}
for (auto ne : ans) {
cout << ne.first + 1 << " " << ne.second + 1 << endl;
}
return 0;
}
| replace | 14 | 15 | 14 | 15 | 0 | |
p02976 | C++ | Runtime Error | #include <bits/stdc++.h>
using namespace std;
typedef unsigned long long int ull;
typedef long long int ll;
typedef pair<ll, ll> pll;
typedef long double D;
typedef complex<D> P;
#define F first
#define S second
const ll MOD = 1000000007;
// const ll MOD=998244353;
template <typename T, typename U>
istream &operator>>(istream &i, pair<T, U> &A) {
i >> A.F >> A.S;
return i;
}
template <typename T> istream &operator>>(istream &i, vector<T> &A) {
for (auto &I : A) {
i >> I;
}
return i;
}
template <typename T, typename U>
ostream &operator<<(ostream &o, const pair<T, U> &A) {
o << A.F << " " << A.S;
return o;
}
template <typename T> ostream &operator<<(ostream &o, const vector<T> &A) {
ll i = A.size();
for (auto &I : A) {
o << I << (--i ? " " : "");
}
return o;
}
ll N, M;
vector<vector<ll>> edge;
vector<ll> depth, cnt;
vector<pll> ans;
void dfs(ll u, ll p) {
for (auto &v : edge[u]) {
if (v == p) {
continue;
}
if (depth[v] != -1) {
if (depth[v] < depth[u]) {
cnt[u]++;
ans.push_back({u, v});
}
continue;
}
depth[v] = depth[u] + 1;
dfs(v, u);
}
if (cnt[u] & 1) {
assert(p != -1);
cnt[u]++;
ans.push_back({u, p});
} else if (p != -1) {
cnt[p]++;
ans.push_back({p, u});
}
}
int main() {
cin.tie(0);
ios::sync_with_stdio(false);
cin >> N >> M;
edge.resize(N);
depth.resize(N, -1);
cnt.resize(N);
if (M & 1) {
cout << -1 << endl;
return 0;
}
for (int i = 0; i < M; i++) {
ll a, b;
cin >> a >> b;
a--;
b--;
edge[a].push_back(b);
edge[b].push_back(a);
}
dfs(0, -1);
for (auto &I : ans) {
I.F++;
I.S++;
cout << I << endl;
}
return 0;
}
| #include <bits/stdc++.h>
using namespace std;
typedef unsigned long long int ull;
typedef long long int ll;
typedef pair<ll, ll> pll;
typedef long double D;
typedef complex<D> P;
#define F first
#define S second
const ll MOD = 1000000007;
// const ll MOD=998244353;
template <typename T, typename U>
istream &operator>>(istream &i, pair<T, U> &A) {
i >> A.F >> A.S;
return i;
}
template <typename T> istream &operator>>(istream &i, vector<T> &A) {
for (auto &I : A) {
i >> I;
}
return i;
}
template <typename T, typename U>
ostream &operator<<(ostream &o, const pair<T, U> &A) {
o << A.F << " " << A.S;
return o;
}
template <typename T> ostream &operator<<(ostream &o, const vector<T> &A) {
ll i = A.size();
for (auto &I : A) {
o << I << (--i ? " " : "");
}
return o;
}
ll N, M;
vector<vector<ll>> edge;
vector<ll> depth, cnt;
vector<pll> ans;
void dfs(ll u, ll p) {
for (auto &v : edge[u]) {
if (v == p) {
continue;
}
if (depth[v] != -1) {
if (depth[v] < depth[u]) {
cnt[u]++;
ans.push_back({u, v});
}
continue;
}
depth[v] = depth[u] + 1;
dfs(v, u);
}
if (cnt[u] & 1) {
assert(p != -1);
cnt[u]++;
ans.push_back({u, p});
} else if (p != -1) {
cnt[p]++;
ans.push_back({p, u});
}
}
int main() {
cin.tie(0);
ios::sync_with_stdio(false);
cin >> N >> M;
edge.resize(N);
depth.resize(N, -1);
cnt.resize(N);
if (M & 1) {
cout << -1 << endl;
return 0;
}
for (int i = 0; i < M; i++) {
ll a, b;
cin >> a >> b;
a--;
b--;
edge[a].push_back(b);
edge[b].push_back(a);
}
depth[0] = 0;
dfs(0, -1);
for (auto &I : ans) {
I.F++;
I.S++;
cout << I << endl;
}
return 0;
}
| insert | 85 | 85 | 85 | 86 | 0 | |
p02976 | C++ | Runtime Error | #include <algorithm>
#include <array>
#include <bitset>
#include <cassert>
#include <cmath>
#include <complex>
#include <cstdint>
#include <deque>
#include <fstream>
#include <functional>
#include <iomanip>
#include <iostream>
#include <list>
#include <map>
#include <numeric>
#include <queue>
#include <regex>
#include <set>
#include <stack>
#include <string>
#include <tuple>
#include <unordered_map>
#include <unordered_set>
#include <utility>
#include <vector>
using namespace std;
using ll = long long;
using ull = unsigned long long;
constexpr ll INF = 1'000'000'000'000'000'000;
namespace utils {
#define ALL(x) begin(x), end(x)
#define rALL(x) rbegin(x), rend(x)
template <class T, class Compare>
using p_queue = priority_queue<T, vector<T>, Compare>;
template <class T> using min_queue = p_queue<T, greater<T>>;
template <class T> using max_queue = p_queue<T, less<T>>;
template <class T> bool min_update(T &X, const T &A) {
if (X > A) {
X = A;
return true;
}
return false;
}
template <class T> bool max_update(T &X, const T &A) {
if (X < A) {
X = A;
return true;
}
return false;
}
using V_Set = unordered_set<int>;
using E_Set = unordered_map<int, V_Set>;
ll operator"" _64(unsigned long long x) { return ll(x); }
ull operator"" _64u(unsigned long long x) { return ull(x); }
template <class T> vector<T> make_vector(int n, T t) { return vector<T>(n, t); }
template <class... Ts> auto make_vector(int n, Ts... ts) {
return vector<decltype(make_vector(ts...))>(n, make_vector(ts...));
}
template <class T> ostream &operator<<(ostream &os, const vector<T> &v) {
for (auto &&x : v) {
os << x << ' ';
}
cout << endl;
return os;
}
} // namespace utils
using namespace utils;
class solver {
istream &is;
ostream &os;
E_Set outE, E;
ll N, M;
vector<bool> vis;
vector<pair<int, int>> sE;
public:
solver(istream &I, ostream &O) : is(I), os(O) {}
void make_spanning(int v) {
vis[v] = true;
for (auto &&u : E[v]) {
if (vis[u]) {
continue;
}
make_spanning(u);
sE.emplace_back(v, u);
} // end u
}
void run() {
is >> N >> M;
if (!is)
return;
for (int i = 0; i < M; ++i) {
int A, B;
is >> A >> B;
E[A].insert(B);
E[B].insert(A);
} // end i
vis.resize(N, false);
if (M % 2) {
cout << -1 << endl;
return;
}
make_spanning(1);
assert(sE.size() == N - 1);
for (auto &&p = sE.begin(); p != sE.end(); p++) {
int v, u;
tie(v, u) = *p;
for (auto &&t : E[u]) {
if (t == v)
continue;
outE[t].insert(u);
E[t].erase(u);
} // end t
E[v].erase(u);
E.erase(u);
if (outE[u].size() % 2) {
outE[u].insert(v);
} else {
outE[v].insert(u);
}
}
for (auto &&et : outE) {
int u = et.first;
for (auto &&v : et.second) {
cout << u << ' ' << v << endl;
} // end v
} // end et
}
};
int main(int argc, char *argv[]) {
cin.tie(nullptr);
ios::sync_with_stdio(false);
cout << setprecision(16) << scientific;
#ifdef DEBUG
string test_cases = "test_EvenDegrees.txt";
cerr << test_cases << " -->" << endl;
auto fs = fstream(test_cases, fstream::in);
int loop = 0;
while (fs) {
loop++;
cout << '#' << loop << "#------\n";
solver(fs, cout).run();
}
if (loop <= 1) {
cout << "===" << endl;
while (cin)
solver(cin, cout).run();
}
#else
solver(cin, cout).run();
#endif
return 0;
}
| #include <algorithm>
#include <array>
#include <bitset>
#include <cassert>
#include <cmath>
#include <complex>
#include <cstdint>
#include <deque>
#include <fstream>
#include <functional>
#include <iomanip>
#include <iostream>
#include <list>
#include <map>
#include <numeric>
#include <queue>
#include <regex>
#include <set>
#include <stack>
#include <string>
#include <tuple>
#include <unordered_map>
#include <unordered_set>
#include <utility>
#include <vector>
using namespace std;
using ll = long long;
using ull = unsigned long long;
constexpr ll INF = 1'000'000'000'000'000'000;
namespace utils {
#define ALL(x) begin(x), end(x)
#define rALL(x) rbegin(x), rend(x)
template <class T, class Compare>
using p_queue = priority_queue<T, vector<T>, Compare>;
template <class T> using min_queue = p_queue<T, greater<T>>;
template <class T> using max_queue = p_queue<T, less<T>>;
template <class T> bool min_update(T &X, const T &A) {
if (X > A) {
X = A;
return true;
}
return false;
}
template <class T> bool max_update(T &X, const T &A) {
if (X < A) {
X = A;
return true;
}
return false;
}
using V_Set = unordered_set<int>;
using E_Set = unordered_map<int, V_Set>;
ll operator"" _64(unsigned long long x) { return ll(x); }
ull operator"" _64u(unsigned long long x) { return ull(x); }
template <class T> vector<T> make_vector(int n, T t) { return vector<T>(n, t); }
template <class... Ts> auto make_vector(int n, Ts... ts) {
return vector<decltype(make_vector(ts...))>(n, make_vector(ts...));
}
template <class T> ostream &operator<<(ostream &os, const vector<T> &v) {
for (auto &&x : v) {
os << x << ' ';
}
cout << endl;
return os;
}
} // namespace utils
using namespace utils;
class solver {
istream &is;
ostream &os;
E_Set outE, E;
ll N, M;
vector<bool> vis;
vector<pair<int, int>> sE;
public:
solver(istream &I, ostream &O) : is(I), os(O) {}
void make_spanning(int v) {
vis[v] = true;
for (auto &&u : E[v]) {
if (vis[u]) {
continue;
}
make_spanning(u);
sE.emplace_back(v, u);
} // end u
}
void run() {
is >> N >> M;
if (!is)
return;
for (int i = 0; i < M; ++i) {
int A, B;
is >> A >> B;
E[A].insert(B);
E[B].insert(A);
} // end i
vis.resize(N + 1, false);
if (M % 2) {
cout << -1 << endl;
return;
}
make_spanning(1);
assert(sE.size() == N - 1);
for (auto &&p = sE.begin(); p != sE.end(); p++) {
int v, u;
tie(v, u) = *p;
for (auto &&t : E[u]) {
if (t == v)
continue;
outE[t].insert(u);
E[t].erase(u);
} // end t
E[v].erase(u);
E.erase(u);
if (outE[u].size() % 2) {
outE[u].insert(v);
} else {
outE[v].insert(u);
}
}
for (auto &&et : outE) {
int u = et.first;
for (auto &&v : et.second) {
cout << u << ' ' << v << endl;
} // end v
} // end et
}
};
int main(int argc, char *argv[]) {
cin.tie(nullptr);
ios::sync_with_stdio(false);
cout << setprecision(16) << scientific;
#ifdef DEBUG
string test_cases = "test_EvenDegrees.txt";
cerr << test_cases << " -->" << endl;
auto fs = fstream(test_cases, fstream::in);
int loop = 0;
while (fs) {
loop++;
cout << '#' << loop << "#------\n";
solver(fs, cout).run();
}
if (loop <= 1) {
cout << "===" << endl;
while (cin)
solver(cin, cout).run();
}
#else
solver(cin, cout).run();
#endif
return 0;
}
| replace | 107 | 108 | 107 | 108 | 0 | |
p02976 | C++ | Runtime Error | #include <bits/stdc++.h>
#define ll long long
#define BUF 1e5
#define INF 1 << 30
constexpr ll mod = 1e9 + 7;
using namespace std;
ll A, B, C, D, G, H, N, M, L, K, P, Q, R, W, X, Y, Z;
string S, T;
ll ans = 0;
void dfs(int node, vector<vector<int>> &tree, vector<int> &parent,
vector<int> &out) {
int p = parent[node];
if (tree[node].size() == 1) {
if (out[node] == 0) {
cout << p + 1 << " " << node + 1 << endl;
out[p] = (++out[p]) % 2;
} else {
cout << node + 1 << " " << p + 1 << endl;
out[node] = (++out[node]) % 2;
}
} else {
for (int adj : tree[node]) {
if (adj == p)
continue;
dfs(adj, tree, parent, out);
}
if (node != 0) {
if (out[node] == 0) {
cout << p + 1 << " " << node + 1 << endl;
out[p] = (++out[p]) % 2;
} else {
cout << node + 1 << " " << p + 1 << endl;
out[node] = (++out[node]) % 2;
}
}
}
}
int main() {
cin >> N >> M;
vector<vector<int>> g(N);
for (int i = 0; i < M; i++) {
int u, v;
cin >> u >> v;
u--, v--;
g[u].push_back(v);
g[v].push_back(u);
}
if (M % 2 != 0) {
cout << -1 << endl;
return 0;
}
vector<int> flag(N, 0);
vector<int> out(N, 0);
vector<vector<int>> tree(N);
vector<int> parent(N);
set<pair<int, int>> set;
queue<int> q;
q.push(0);
parent[0] = -1;
while (!q.empty()) {
int now = q.front();
q.pop();
int p = parent[now];
for (int adj : g[now]) {
if (adj == p)
continue;
if (flag[adj]) {
set.insert({min(now, adj), max(now, adj)});
continue;
}
flag[adj] = 1;
q.push(adj);
parent[adj] = now;
tree[now].push_back(adj);
tree[adj].push_back(now);
}
}
for (auto edge : set) {
int u = edge.first;
int v = edge.second;
cout << u + 1 << " " << v + 1 << endl;
out[u] = (++out[u]) % 2;
}
dfs(0, tree, parent, out);
} | #include <bits/stdc++.h>
#define ll long long
#define BUF 1e5
#define INF 1 << 30
constexpr ll mod = 1e9 + 7;
using namespace std;
ll A, B, C, D, G, H, N, M, L, K, P, Q, R, W, X, Y, Z;
string S, T;
ll ans = 0;
void dfs(int node, vector<vector<int>> &tree, vector<int> &parent,
vector<int> &out) {
int p = parent[node];
if (tree[node].size() == 1 && node != 0) {
if (out[node] == 0) {
cout << p + 1 << " " << node + 1 << endl;
out[p] = (++out[p]) % 2;
} else {
cout << node + 1 << " " << p + 1 << endl;
out[node] = (++out[node]) % 2;
}
} else {
for (int adj : tree[node]) {
if (adj == p)
continue;
dfs(adj, tree, parent, out);
}
if (node != 0) {
if (out[node] == 0) {
cout << p + 1 << " " << node + 1 << endl;
out[p] = (++out[p]) % 2;
} else {
cout << node + 1 << " " << p + 1 << endl;
out[node] = (++out[node]) % 2;
}
}
}
}
int main() {
cin >> N >> M;
vector<vector<int>> g(N);
for (int i = 0; i < M; i++) {
int u, v;
cin >> u >> v;
u--, v--;
g[u].push_back(v);
g[v].push_back(u);
}
if (M % 2 != 0) {
cout << -1 << endl;
return 0;
}
vector<int> flag(N, 0);
vector<int> out(N, 0);
vector<vector<int>> tree(N);
vector<int> parent(N);
set<pair<int, int>> set;
queue<int> q;
q.push(0);
parent[0] = -1;
while (!q.empty()) {
int now = q.front();
q.pop();
int p = parent[now];
for (int adj : g[now]) {
if (adj == p)
continue;
if (flag[adj]) {
set.insert({min(now, adj), max(now, adj)});
continue;
}
flag[adj] = 1;
q.push(adj);
parent[adj] = now;
tree[now].push_back(adj);
tree[adj].push_back(now);
}
}
for (auto edge : set) {
int u = edge.first;
int v = edge.second;
cout << u + 1 << " " << v + 1 << endl;
out[u] = (++out[u]) % 2;
}
dfs(0, tree, parent, out);
} | replace | 13 | 14 | 13 | 14 | 0 | |
p02976 | C++ | Runtime Error | #include <bits/stdc++.h>
using namespace std;
vector<vector<int>> graph;
vector<int> degree;
vector<int> depth;
vector<pair<int, int>> ans;
void DFS(int v, int previous_v) {
for (int adjacent : graph[v]) {
if (adjacent == previous_v)
continue;
if (depth[adjacent] == -1) { // just dive down
depth[adjacent] = depth[v] + 1;
DFS(adjacent, v);
} else {
if (depth[adjacent] > depth[v]) {
ans.push_back({v, adjacent});
degree[v] += 1;
}
}
}
if (previous_v == -1)
return;
if (previous_v != -1) {
if (degree[v] % 2 ==
1) { // then use (v --> previous_v) to make degree[v] even
ans.push_back({v, previous_v});
degree[v] += 1;
} else { // degree[v] % 2 == 0
ans.push_back({previous_v, v});
degree[previous_v] += 1;
}
}
}
int main() {
int n, m;
cin >> n >> m;
graph.resize(m);
degree.resize(n);
depth.assign(n, -1);
for (int i = 0; i < m; i++) {
int a, b;
cin >> a >> b;
a -= 1;
b -= 1;
graph[a].push_back(b);
graph[b].push_back(a);
}
if (m % 2 == 1) {
cout << -1 << endl;
return 0;
}
depth[0] = 0;
DFS(0, -1);
for (auto x : ans) {
cout << x.first + 1 << " " << x.second + 1 << endl;
}
return 0;
} | #include <bits/stdc++.h>
using namespace std;
vector<vector<int>> graph;
vector<int> degree;
vector<int> depth;
vector<pair<int, int>> ans;
void DFS(int v, int previous_v) {
for (int adjacent : graph[v]) {
if (adjacent == previous_v)
continue;
if (depth[adjacent] == -1) { // just dive down
depth[adjacent] = depth[v] + 1;
DFS(adjacent, v);
} else {
if (depth[adjacent] > depth[v]) {
ans.push_back({v, adjacent});
degree[v] += 1;
}
}
}
if (previous_v == -1)
return;
if (previous_v != -1) {
if (degree[v] % 2 ==
1) { // then use (v --> previous_v) to make degree[v] even
ans.push_back({v, previous_v});
degree[v] += 1;
} else { // degree[v] % 2 == 0
ans.push_back({previous_v, v});
degree[previous_v] += 1;
}
}
}
int main() {
int n, m;
cin >> n >> m;
graph.resize(n);
degree.resize(n);
depth.assign(n, -1);
for (int i = 0; i < m; i++) {
int a, b;
cin >> a >> b;
a -= 1;
b -= 1;
graph[a].push_back(b);
graph[b].push_back(a);
}
if (m % 2 == 1) {
cout << -1 << endl;
return 0;
}
depth[0] = 0;
DFS(0, -1);
for (auto x : ans) {
cout << x.first + 1 << " " << x.second + 1 << endl;
}
return 0;
} | replace | 42 | 43 | 42 | 43 | 0 | |
p02976 | C++ | Runtime Error | #include <bits/stdc++.h>
using namespace std;
const int N = 1e5 + 5;
struct edge {
int to, next, ok;
} e[N];
int n, m, good = 1, h[N];
int visited[N], check[N];
void add(int u, int v) {
e[++good] = (edge){v, h[u], 0};
h[u] = good;
}
void dfs(int u, int p) {
visited[u] = ++*visited;
for (int i = h[u]; i; i = e[i].next) {
if (i ^ p ^ 1) {
if (!visited[e[i].to]) {
dfs(e[i].to, i);
if (check[e[i].to] & 1) {
e[i].ok = -1;
e[i ^ 1].ok = 1;
check[e[i].to] ^= 1;
} else {
e[i].ok = 1;
e[i ^ 1].ok = -1;
check[u] ^= 1;
}
} else if (visited[e[i].to] < visited[u]) {
e[i].ok = 1;
e[i ^ 1].ok = -1;
check[u] ^= 1;
}
}
}
}
int main() {
cin >> n >> m;
for (int i = 1; i <= m; i++) {
int u, v;
cin >> u >> v;
add(u, v);
add(v, u);
}
for (int i = 1; i <= n; i++) {
if (!visited[i])
dfs(i, 0);
}
for (int i = 1; i <= n; i++) {
if (check[i]) {
cout << "-1";
return 0;
}
}
for (int i = 1; i <= n; i++) {
for (int j = h[i]; j; j = e[j].next) {
if (e[j].ok == 1) {
cout << i << " " << e[j].to << endl;
}
}
}
} | #include <bits/stdc++.h>
using namespace std;
const int N = 1e6 + 5;
struct edge {
int to, next, ok;
} e[N];
int n, m, good = 1, h[N];
int visited[N], check[N];
void add(int u, int v) {
e[++good] = (edge){v, h[u], 0};
h[u] = good;
}
void dfs(int u, int p) {
visited[u] = ++*visited;
for (int i = h[u]; i; i = e[i].next) {
if (i ^ p ^ 1) {
if (!visited[e[i].to]) {
dfs(e[i].to, i);
if (check[e[i].to] & 1) {
e[i].ok = -1;
e[i ^ 1].ok = 1;
check[e[i].to] ^= 1;
} else {
e[i].ok = 1;
e[i ^ 1].ok = -1;
check[u] ^= 1;
}
} else if (visited[e[i].to] < visited[u]) {
e[i].ok = 1;
e[i ^ 1].ok = -1;
check[u] ^= 1;
}
}
}
}
int main() {
cin >> n >> m;
for (int i = 1; i <= m; i++) {
int u, v;
cin >> u >> v;
add(u, v);
add(v, u);
}
for (int i = 1; i <= n; i++) {
if (!visited[i])
dfs(i, 0);
}
for (int i = 1; i <= n; i++) {
if (check[i]) {
cout << "-1";
return 0;
}
}
for (int i = 1; i <= n; i++) {
for (int j = h[i]; j; j = e[j].next) {
if (e[j].ok == 1) {
cout << i << " " << e[j].to << endl;
}
}
}
} | replace | 2 | 3 | 2 | 3 | 0 | |
p02976 | C++ | Runtime Error | #include <bits/stdc++.h>
using namespace std;
#define N 10005
int n, m, fa[N], out[N];
vector<int> g[N];
inline int Find(int x) { return x == fa[x] ? x : fa[x] = Find(fa[x]); }
inline void dfs(int x, int fa) {
for (int i = 0; i < g[x].size(); i++) {
int v = g[x][i];
if (v == fa)
continue;
dfs(v, x);
if (out[v] & 1)
printf("%d %d\n", v, x);
else {
out[x]++;
printf("%d %d\n", x, v);
}
}
return;
}
int main() {
scanf("%d%d", &n, &m);
if (m & 1) {
printf("-1");
return 0;
}
for (int i = 1; i <= n; i++)
fa[i] = i;
for (int i = 1; i <= m; i++) {
int u, v;
scanf("%d%d", &u, &v);
if (Find(u) != Find(v)) {
g[u].push_back(v);
g[v].push_back(u);
fa[Find(u)] = Find(v);
} else {
out[v]++;
printf("%d %d\n", v, u);
}
}
dfs(1, 0);
return 0;
} | #include <bits/stdc++.h>
using namespace std;
#define N 100005
int n, m, fa[N], out[N];
vector<int> g[N];
inline int Find(int x) { return x == fa[x] ? x : fa[x] = Find(fa[x]); }
inline void dfs(int x, int fa) {
for (int i = 0; i < g[x].size(); i++) {
int v = g[x][i];
if (v == fa)
continue;
dfs(v, x);
if (out[v] & 1)
printf("%d %d\n", v, x);
else {
out[x]++;
printf("%d %d\n", x, v);
}
}
return;
}
int main() {
scanf("%d%d", &n, &m);
if (m & 1) {
printf("-1");
return 0;
}
for (int i = 1; i <= n; i++)
fa[i] = i;
for (int i = 1; i <= m; i++) {
int u, v;
scanf("%d%d", &u, &v);
if (Find(u) != Find(v)) {
g[u].push_back(v);
g[v].push_back(u);
fa[Find(u)] = Find(v);
} else {
out[v]++;
printf("%d %d\n", v, u);
}
}
dfs(1, 0);
return 0;
} | replace | 2 | 3 | 2 | 3 | 0 | |
p02976 | C++ | Runtime Error | #pragma GCC optimize("Ofast")
#pragma GCC optimize("no-stack-protector")
#pragma GCC optimize("unroll-loops")
#pragma GCC optimize("fast-math")
#pragma GCC target("sse,sse2,sse3,ssse3,popcnt,abm,mmx,tune=native")
#include <algorithm>
#include <bitset>
#include <cmath>
#include <cstdio>
#include <cstring>
#include <deque>
#include <iomanip>
#include <iostream>
#include <map>
#include <math.h>
#include <queue>
#include <random>
#include <set>
#include <stdio.h>
#include <string>
#include <unordered_map>
#include <unordered_set>
#include <vector>
using namespace std;
template <typename T> void uin(T &a, T b) {
if (b < a) {
a = b;
}
}
template <typename T> void uax(T &a, T b) {
if (b > a) {
a = b;
}
}
#define int long long
#define ghost signed
#define left left228
#define right right228
#define prev prev228
#define list list228
const int N = 100 * 1000 + 228;
namespace DSU {
int p[N], sz[N];
void init(int n) {
for (int i = 1; i <= n; ++i) {
p[i] = i;
sz[i] = 1;
}
}
int getp(int v) {
if (v == p[v])
return v;
p[v] = getp(p[v]);
return p[v];
}
bool join(int u, int v) {
u = getp(u);
v = getp(v);
if (u == v)
return 0;
if (sz[u] < sz[v]) {
p[u] = v;
sz[v] += sz[u];
} else {
p[v] = u;
sz[u] += sz[v];
}
return 1;
}
}; // namespace DSU
vector<int> g[N];
vector<pair<int, int>> ans;
int deg[N];
void dfs(int v, int par = -1) {
for (int to : g[v]) {
if (to != par)
dfs(to, v);
}
if (deg[v]) {
ans.emplace_back(v, par);
} else {
if (par != -1) {
ans.emplace_back(par, v);
deg[par] ^= 1;
}
}
}
int a[100];
ghost main() {
ios_base::sync_with_stdio(false);
cin.tie(0);
int n, m;
cin >> n >> m;
if (m & 1) {
cout << -1 << '\n';
return 0;
}
DSU::init(n);
for (int i = 0; i < m; ++i) {
int u, v;
cin >> u >> v;
if (!DSU::join(u, v)) {
g[u].push_back(v);
g[v].push_back(u);
} else {
ans.emplace_back(u, v);
deg[u] ^= 1;
}
}
dfs(1);
for (auto p : ans)
cout << p.first << ' ' << p.second << '\n';
return 0;
} // kek ;
| #pragma GCC optimize("Ofast")
#pragma GCC optimize("no-stack-protector")
#pragma GCC optimize("unroll-loops")
#pragma GCC optimize("fast-math")
#pragma GCC target("sse,sse2,sse3,ssse3,popcnt,abm,mmx,tune=native")
#include <algorithm>
#include <bitset>
#include <cmath>
#include <cstdio>
#include <cstring>
#include <deque>
#include <iomanip>
#include <iostream>
#include <map>
#include <math.h>
#include <queue>
#include <random>
#include <set>
#include <stdio.h>
#include <string>
#include <unordered_map>
#include <unordered_set>
#include <vector>
using namespace std;
template <typename T> void uin(T &a, T b) {
if (b < a) {
a = b;
}
}
template <typename T> void uax(T &a, T b) {
if (b > a) {
a = b;
}
}
#define int long long
#define ghost signed
#define left left228
#define right right228
#define prev prev228
#define list list228
const int N = 100 * 1000 + 228;
namespace DSU {
int p[N], sz[N];
void init(int n) {
for (int i = 1; i <= n; ++i) {
p[i] = i;
sz[i] = 1;
}
}
int getp(int v) {
if (v == p[v])
return v;
p[v] = getp(p[v]);
return p[v];
}
bool join(int u, int v) {
u = getp(u);
v = getp(v);
if (u == v)
return 0;
if (sz[u] < sz[v]) {
p[u] = v;
sz[v] += sz[u];
} else {
p[v] = u;
sz[u] += sz[v];
}
return 1;
}
}; // namespace DSU
vector<int> g[N];
vector<pair<int, int>> ans;
int deg[N];
void dfs(int v, int par = -1) {
for (int to : g[v]) {
if (to != par)
dfs(to, v);
}
if (deg[v]) {
ans.emplace_back(v, par);
} else {
if (par != -1) {
ans.emplace_back(par, v);
deg[par] ^= 1;
}
}
}
int a[100];
ghost main() {
ios_base::sync_with_stdio(false);
cin.tie(0);
int n, m;
cin >> n >> m;
if (m & 1) {
cout << -1 << '\n';
return 0;
}
DSU::init(n);
for (int i = 0; i < m; ++i) {
int u, v;
cin >> u >> v;
if (DSU::join(u, v)) {
g[u].push_back(v);
g[v].push_back(u);
} else {
ans.emplace_back(u, v);
deg[u] ^= 1;
}
}
dfs(1);
for (auto p : ans)
cout << p.first << ' ' << p.second << '\n';
return 0;
} // kek ;
| replace | 114 | 115 | 114 | 115 | 0 |
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