Search is not available for this dataset
name stringlengths 2 112 | description stringlengths 29 13k | source int64 1 7 | difficulty int64 0 25 | solution stringlengths 7 983k | language stringclasses 4
values |
|---|---|---|---|---|---|
263_C. Circle of Numbers | One day Vasya came up to the blackboard and wrote out n distinct integers from 1 to n in some order in a circle. Then he drew arcs to join the pairs of integers (a, b) (a ≠ b), that are either each other's immediate neighbors in the circle, or there is number c, such that a and с are immediate neighbors, and b and c ar... | 2 | 9 | #include <bits/stdc++.h>
using namespace std;
vector<int> ad[100000];
int ans[100000];
bool used[100000];
int d[4] = {-2, -1, 1, 2};
int n;
bool check() {
int i, j, k;
memset(used, false, sizeof(used));
used[ans[0]] = true;
used[ans[1]] = true;
used[ans[2]] = true;
used[ans[3]] = true;
for (i = 2; i < n -... | CPP |
263_C. Circle of Numbers | One day Vasya came up to the blackboard and wrote out n distinct integers from 1 to n in some order in a circle. Then he drew arcs to join the pairs of integers (a, b) (a ≠ b), that are either each other's immediate neighbors in the circle, or there is number c, such that a and с are immediate neighbors, and b and c ar... | 2 | 9 | #include <bits/stdc++.h>
using namespace std;
vector<int> adj[100009];
int col[100009], occ[100009];
vector<int> out;
int n, u, v;
bool solve(int a, int b) {
memset(col, (0), sizeof(col));
;
out.clear();
out.push_back((1));
out.push_back((a));
out.push_back((b));
col[1] = col[a] = col[b] = true;
for (in... | CPP |
263_C. Circle of Numbers | One day Vasya came up to the blackboard and wrote out n distinct integers from 1 to n in some order in a circle. Then he drew arcs to join the pairs of integers (a, b) (a ≠ b), that are either each other's immediate neighbors in the circle, or there is number c, such that a and с are immediate neighbors, and b and c ar... | 2 | 9 |
// @author Sanzhar
import java.io.*;
import java.util.*;
public class Template {
BufferedReader in;
PrintWriter out;
StringTokenizer st;
String next() {
while (st == null || !st.hasMoreTokens()) {
try {
st = new StringTokenizer(in.readLine());
} catch ... | JAVA |
263_C. Circle of Numbers | One day Vasya came up to the blackboard and wrote out n distinct integers from 1 to n in some order in a circle. Then he drew arcs to join the pairs of integers (a, b) (a ≠ b), that are either each other's immediate neighbors in the circle, or there is number c, such that a and с are immediate neighbors, and b and c ar... | 2 | 9 | #include <bits/stdc++.h>
using namespace std;
const int oo = 1 << 30;
const double PI = M_PI;
const double EPS = 1e-15;
const int MaxV = 100005;
int V, E;
vector<int> g[MaxV];
vector<int> answer;
bool used[MaxV];
int pos[MaxV];
bool find(int node, int x) {
for (int i = 0; i < 4; i++)
if (g[node][i] == x) return t... | CPP |
263_C. Circle of Numbers | One day Vasya came up to the blackboard and wrote out n distinct integers from 1 to n in some order in a circle. Then he drew arcs to join the pairs of integers (a, b) (a ≠ b), that are either each other's immediate neighbors in the circle, or there is number c, such that a and с are immediate neighbors, and b and c ar... | 2 | 9 | #include <bits/stdc++.h>
using namespace std;
vector<int> ans, a[200000];
map<int, int> was;
int p1, p2, pr, pt;
int k;
int n, x, y;
void dfs() {
int sz = ans.size();
int x = ans[sz - 1];
int y = ans[sz - 2];
for (int i = 0; i < 4; i++)
for (int j = 0; j < 4; j++)
if (a[x][i] == a[y][j] && !was[a[y][j... | CPP |
263_C. Circle of Numbers | One day Vasya came up to the blackboard and wrote out n distinct integers from 1 to n in some order in a circle. Then he drew arcs to join the pairs of integers (a, b) (a ≠ b), that are either each other's immediate neighbors in the circle, or there is number c, such that a and с are immediate neighbors, and b and c ar... | 2 | 9 | import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.LinkedList;
import java.util.StringTokenizer;
public class C {
static class Scanner{
BufferedReader br=null;
StringTokenizer tk=null;
public Scanner(){
br=new BufferedR... | JAVA |
263_C. Circle of Numbers | One day Vasya came up to the blackboard and wrote out n distinct integers from 1 to n in some order in a circle. Then he drew arcs to join the pairs of integers (a, b) (a ≠ b), that are either each other's immediate neighbors in the circle, or there is number c, such that a and с are immediate neighbors, and b and c ar... | 2 | 9 | #include <bits/stdc++.h>
using namespace std;
template <typename T>
ostream &operator<<(ostream &o, vector<T> &v) {
for (typeof(v.size()) i = 0; i < v.size(); ++i) o << v[i] << " ";
o << endl;
return o;
}
int neigh[112345][4];
int deg[112345], a[112345];
int taken[112345];
void isvalid(bool x) {
if (!x) {
p... | CPP |
263_C. Circle of Numbers | One day Vasya came up to the blackboard and wrote out n distinct integers from 1 to n in some order in a circle. Then he drew arcs to join the pairs of integers (a, b) (a ≠ b), that are either each other's immediate neighbors in the circle, or there is number c, such that a and с are immediate neighbors, and b and c ar... | 2 | 9 | #include <bits/stdc++.h>
using namespace std;
const int maxn = 100005;
int n;
vector<int> v[maxn];
vector<int> li[maxn], out;
bool vis[maxn];
void dfs(int x) {
vis[x] = 1;
out.push_back(x);
for (int i = 0; i < li[x].size(); i++) {
if (!vis[li[x][i]]) dfs(li[x][i]);
}
}
int cnt(int a, int b) {
int res = 0;... | CPP |
263_C. Circle of Numbers | One day Vasya came up to the blackboard and wrote out n distinct integers from 1 to n in some order in a circle. Then he drew arcs to join the pairs of integers (a, b) (a ≠ b), that are either each other's immediate neighbors in the circle, or there is number c, such that a and с are immediate neighbors, and b and c ar... | 2 | 9 | #include <bits/stdc++.h>
using namespace std;
static inline bool get(int &v) {
int s = 1, c;
while (!isdigit(c = getchar()) && c != '-') {
if (c == EOF) break;
}
if (c == EOF) return 0;
if (c == '-')
s = 0, v = 0;
else
v = c ^ 48;
for (; isdigit(c = getchar()); v = (v << 1) + (v << 3) + (c ^ 4... | CPP |
263_C. Circle of Numbers | One day Vasya came up to the blackboard and wrote out n distinct integers from 1 to n in some order in a circle. Then he drew arcs to join the pairs of integers (a, b) (a ≠ b), that are either each other's immediate neighbors in the circle, or there is number c, such that a and с are immediate neighbors, and b and c ar... | 2 | 9 | #include <bits/stdc++.h>
using namespace std;
int n, x, y, h[100005], w[100005];
bool g, f[100005], c;
vector<int> vt[100005];
void back(int p, int u, int r) {
w[p] = u;
f[u] = true;
if (p == n - 1) c = true;
;
for (int i = 0; i < 4; i++)
if (!f[vt[u][i]]) {
g = false;
for (int j = 0; j < 4; j... | CPP |
263_C. Circle of Numbers | One day Vasya came up to the blackboard and wrote out n distinct integers from 1 to n in some order in a circle. Then he drew arcs to join the pairs of integers (a, b) (a ≠ b), that are either each other's immediate neighbors in the circle, or there is number c, such that a and с are immediate neighbors, and b and c ar... | 2 | 9 | #include <bits/stdc++.h>
using namespace std;
vector<int> g[100001], ans;
int n;
bool used[100001];
void dfs(int v, int p, int d) {
used[v] = true;
ans.push_back(v);
if (++d == n) {
if (v == 1) {
for (int i = 0; i < ans.size(); ++i) cout << ans[i] << " ";
cout << endl;
exit(0);
}
} els... | CPP |
263_C. Circle of Numbers | One day Vasya came up to the blackboard and wrote out n distinct integers from 1 to n in some order in a circle. Then he drew arcs to join the pairs of integers (a, b) (a ≠ b), that are either each other's immediate neighbors in the circle, or there is number c, such that a and с are immediate neighbors, and b and c ar... | 2 | 9 | #include <bits/stdc++.h>
using namespace std;
template <typename T, typename U>
inline void smin(T &a, U b) {
if (a > b) a = b;
}
template <typename T, typename U>
inline void smax(T &a, U b) {
if (a < b) a = b;
}
template <class T>
inline void gn(T &first) {
char c, sg = 0;
while (c = getchar(), (c > '9' || c ... | CPP |
263_C. Circle of Numbers | One day Vasya came up to the blackboard and wrote out n distinct integers from 1 to n in some order in a circle. Then he drew arcs to join the pairs of integers (a, b) (a ≠ b), that are either each other's immediate neighbors in the circle, or there is number c, such that a and с are immediate neighbors, and b and c ar... | 2 | 9 | #include <bits/stdc++.h>
using namespace std;
int sam(vector<int> a, vector<int> b) {
int ret = 0;
for (int i = 0; i < 4; i++) {
for (int j = 0; j < 4; j++) {
if (a[i] == b[j]) {
ret++;
}
}
}
return ret;
}
vector<int> pat[100000];
vector<int> rin[100000];
int main() {
int num;
sc... | CPP |
263_C. Circle of Numbers | One day Vasya came up to the blackboard and wrote out n distinct integers from 1 to n in some order in a circle. Then he drew arcs to join the pairs of integers (a, b) (a ≠ b), that are either each other's immediate neighbors in the circle, or there is number c, such that a and с are immediate neighbors, and b and c ar... | 2 | 9 | #include <bits/stdc++.h>
using namespace std;
vector<int> L[100005], AD[100005], node;
bool vis2[100005];
int n;
void DFS2(int nodo) {
if (vis2[nodo]) return;
vis2[nodo] = 1;
node.push_back(nodo);
for (int i = 0; i < AD[nodo].size(); i++) DFS2(AD[nodo][i]);
}
map<pair<int, int>, int> edge;
bool correct1(vector<... | CPP |
263_C. Circle of Numbers | One day Vasya came up to the blackboard and wrote out n distinct integers from 1 to n in some order in a circle. Then he drew arcs to join the pairs of integers (a, b) (a ≠ b), that are either each other's immediate neighbors in the circle, or there is number c, such that a and с are immediate neighbors, and b and c ar... | 2 | 9 | #include <bits/stdc++.h>
using namespace std;
int A[200005], B[200005], N;
int O[200005][5];
void ucitaj() {
scanf("%d", &N);
if (N == 5) {
printf("1 5 3 4 2\n");
exit(0);
}
int i, j;
for (i = 1; i <= 2 * N; i++) {
scanf("%d%d", A + i, B + i);
if (O[A[i]][1] == 0)
O[A[i]][1] = B[i];
... | CPP |
263_C. Circle of Numbers | One day Vasya came up to the blackboard and wrote out n distinct integers from 1 to n in some order in a circle. Then he drew arcs to join the pairs of integers (a, b) (a ≠ b), that are either each other's immediate neighbors in the circle, or there is number c, such that a and с are immediate neighbors, and b and c ar... | 2 | 9 | #include <bits/stdc++.h>
using namespace std;
const int maxN = 3 * 1000 * 100 + 50;
vector<int> v[maxN], path;
set<pair<int, int> > p;
queue<int> q;
bool mark[maxN];
int d[maxN];
int main() {
ios::sync_with_stdio(false);
int n;
cin >> n;
for (int i = 0; i < 2 * n; i++) {
int a, b;
cin >> a >> b;
p.i... | CPP |
263_C. Circle of Numbers | One day Vasya came up to the blackboard and wrote out n distinct integers from 1 to n in some order in a circle. Then he drew arcs to join the pairs of integers (a, b) (a ≠ b), that are either each other's immediate neighbors in the circle, or there is number c, such that a and с are immediate neighbors, and b and c ar... | 2 | 9 | #include <bits/stdc++.h>
using namespace std;
int i, j, k, x, y, z, n, m;
int a[200001][10];
int adj[200001][10];
int ans[200001];
int dd[11];
bool t[11];
int be(int S, int x) {
return ((x == a[S][1] || x == a[S][2] || x == a[S][3] || x == a[S][4]) ? 1
... | CPP |
263_C. Circle of Numbers | One day Vasya came up to the blackboard and wrote out n distinct integers from 1 to n in some order in a circle. Then he drew arcs to join the pairs of integers (a, b) (a ≠ b), that are either each other's immediate neighbors in the circle, or there is number c, such that a and с are immediate neighbors, and b and c ar... | 2 | 9 | #include <bits/stdc++.h>
using namespace std;
struct grana {
int p, k;
inline bool operator<(const grana &x) const { return p < x.p; }
};
grana g[400005];
int poc[100005];
int sol[100005];
bool isedge(int u, int v) {
for (int i = poc[u]; i < poc[u + 1]; i++)
if (g[i].k == v) return 1;
return 0;
}
int main()... | CPP |
263_C. Circle of Numbers | One day Vasya came up to the blackboard and wrote out n distinct integers from 1 to n in some order in a circle. Then he drew arcs to join the pairs of integers (a, b) (a ≠ b), that are either each other's immediate neighbors in the circle, or there is number c, such that a and с are immediate neighbors, and b and c ar... | 2 | 9 | import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.HashSet;
import java.util.Set;
import java.util.StringTokenizer;
public class C {
... | JAVA |
263_C. Circle of Numbers | One day Vasya came up to the blackboard and wrote out n distinct integers from 1 to n in some order in a circle. Then he drew arcs to join the pairs of integers (a, b) (a ≠ b), that are either each other's immediate neighbors in the circle, or there is number c, such that a and с are immediate neighbors, and b and c ar... | 2 | 9 | /**
* Created with IntelliJ IDEA.
* User: yuantian
* Date: 3/3/13
* Time: 10:57 PM
* To change this template use File | Settings | File Templates.
*/
import java.util.*;
public class CircleOfNumbers {
public static void main(String[] args) {
Scanner in = new Scanner(System.in);
int n = in.nex... | JAVA |
263_C. Circle of Numbers | One day Vasya came up to the blackboard and wrote out n distinct integers from 1 to n in some order in a circle. Then he drew arcs to join the pairs of integers (a, b) (a ≠ b), that are either each other's immediate neighbors in the circle, or there is number c, such that a and с are immediate neighbors, and b and c ar... | 2 | 9 | #include <bits/stdc++.h>
using namespace std;
int n;
vector<vector<int> > adjlst;
vector<int> res;
int dir[] = {-2, -1, 1, 2};
set<int> vis;
bool findRes(int adj, int i, int lim) {
for (int d = 0; d < lim; d++) {
int idx = (i + dir[d] + n) % n;
if (res[idx] == adj) return 1;
}
return 0;
}
bool valid() {
... | CPP |
263_C. Circle of Numbers | One day Vasya came up to the blackboard and wrote out n distinct integers from 1 to n in some order in a circle. Then he drew arcs to join the pairs of integers (a, b) (a ≠ b), that are either each other's immediate neighbors in the circle, or there is number c, such that a and с are immediate neighbors, and b and c ar... | 2 | 9 | #include <bits/stdc++.h>
using namespace std;
vector<int> g[100010];
int vis[100010];
int a[200010], b[200010], s[4];
int res[100010];
int n;
int f(int s[4]) {
memset(vis, 0, sizeof(vis));
res[0] = s[0];
res[1] = s[1];
res[2] = 1;
res[3] = s[2];
res[4] = s[3];
for (int i = 2; i <= 4; i++) vis[res[i]] = 1;... | CPP |
263_C. Circle of Numbers | One day Vasya came up to the blackboard and wrote out n distinct integers from 1 to n in some order in a circle. Then he drew arcs to join the pairs of integers (a, b) (a ≠ b), that are either each other's immediate neighbors in the circle, or there is number c, such that a and с are immediate neighbors, and b and c ar... | 2 | 9 | #include <bits/stdc++.h>
using namespace std;
const double eps = 1e-8;
const double pi = acos(-1.0);
const int INF = 0x7f7f7f7f;
const int maxn = 111111;
const int mod = 9901;
template <class T>
int countbit(T n) {
int t = 0;
while (n) n &= n - 1, ++t;
return t;
}
template <class T>
T lowbit(T n) {
return n & (... | CPP |
263_C. Circle of Numbers | One day Vasya came up to the blackboard and wrote out n distinct integers from 1 to n in some order in a circle. Then he drew arcs to join the pairs of integers (a, b) (a ≠ b), that are either each other's immediate neighbors in the circle, or there is number c, such that a and с are immediate neighbors, and b and c ar... | 2 | 9 | #include <bits/stdc++.h>
using namespace std;
int main() {
int n;
cin >> n;
map<int, set<int> > m;
for (int Q = 0; Q < 2 * n; ++Q) {
int x, y;
cin >> x >> y;
m[x].insert(y);
m[y].insert(x);
}
if (m.size() != n) {
cout << -1;
return 0;
}
for (int Q = 1; Q <= n; ++Q) {
if (m[Q]... | CPP |
263_C. Circle of Numbers | One day Vasya came up to the blackboard and wrote out n distinct integers from 1 to n in some order in a circle. Then he drew arcs to join the pairs of integers (a, b) (a ≠ b), that are either each other's immediate neighbors in the circle, or there is number c, such that a and с are immediate neighbors, and b and c ar... | 2 | 9 | n = input()
e = [set() for _ in range(n + 1)]
def g(r):
if len(r) != n:
return False
r = r * 3
for i in range(n):
if len(e[r[i]] - set(r[i - 2 + n : i + 3 + n])):
return False
return True
def f():
for i in range(n):
if len(e[i + 1]) != 4:
return [-1]
if n == 5:
return range(1, 6)
for x in e[1]:
... | PYTHON |
263_C. Circle of Numbers | One day Vasya came up to the blackboard and wrote out n distinct integers from 1 to n in some order in a circle. Then he drew arcs to join the pairs of integers (a, b) (a ≠ b), that are either each other's immediate neighbors in the circle, or there is number c, such that a and с are immediate neighbors, and b and c ar... | 2 | 9 | #include <bits/stdc++.h>
using namespace std;
int n, g[100100][5], d[100100], v[100100];
bool in[100100];
bool dfs(int a, int b, int k = 1) {
v[k - 1] = a, v[k] = b;
if (k < n) {
in[b] = 1;
for (int i = 0; i < 4; ++i) {
int c = g[b][i];
if (in[c]) continue;
if ((g[a][0] == c || g[a][1] == ... | CPP |
263_C. Circle of Numbers | One day Vasya came up to the blackboard and wrote out n distinct integers from 1 to n in some order in a circle. Then he drew arcs to join the pairs of integers (a, b) (a ≠ b), that are either each other's immediate neighbors in the circle, or there is number c, such that a and с are immediate neighbors, and b and c ar... | 2 | 9 | #include <bits/stdc++.h>
using namespace std;
int adj[100000][4];
int adjCounts[100000];
int N;
bool was[100000];
int res[100000];
bool tryBuild() {
for (int i = 3; i < N; i++) {
int next = -1;
for (int j = 0; j < 4; j++) {
for (int k = 0; k < 4; k++)
if (adj[res[i - 1]][j] == adj[res[i - 2]][k]... | CPP |
263_C. Circle of Numbers | One day Vasya came up to the blackboard and wrote out n distinct integers from 1 to n in some order in a circle. Then he drew arcs to join the pairs of integers (a, b) (a ≠ b), that are either each other's immediate neighbors in the circle, or there is number c, such that a and с are immediate neighbors, and b and c ar... | 2 | 9 | import java.io.*;
import java.util.*;
public class A {
public static void main(String[] args) throws Exception {
Scanner sc = new Scanner(System.in);
PrintWriter out = new PrintWriter(System.out);
int n = sc.nextInt();
ArrayList<Integer>[] adjList = new ArrayList[n + 1];
for(int i = 1; i <= n; ++i)
ad... | JAVA |
263_C. Circle of Numbers | One day Vasya came up to the blackboard and wrote out n distinct integers from 1 to n in some order in a circle. Then he drew arcs to join the pairs of integers (a, b) (a ≠ b), that are either each other's immediate neighbors in the circle, or there is number c, such that a and с are immediate neighbors, and b and c ar... | 2 | 9 | #include <bits/stdc++.h>
using namespace std;
int n, kk, x, y, cnt[111111], to[111111][4], rr[111111];
bool w[111111];
bool go(int pp, int p, int k) {
int xx, yy;
for (int i = 0; i < 4; ++i)
for (int j = 0; j < 4; ++j) {
xx = to[pp][i], yy = to[p][j];
if (xx == yy && (!w[xx] || (k == n - 1 && xx == ... | CPP |
263_C. Circle of Numbers | One day Vasya came up to the blackboard and wrote out n distinct integers from 1 to n in some order in a circle. Then he drew arcs to join the pairs of integers (a, b) (a ≠ b), that are either each other's immediate neighbors in the circle, or there is number c, such that a and с are immediate neighbors, and b and c ar... | 2 | 9 | #include <bits/stdc++.h>
using namespace std;
map<pair<int, int>, bool> edge;
map<pair<int, int>, bool>::iterator it;
vector<vector<int> > graph;
vector<int> ans;
int vis[100004];
int id = 1;
int main() {
int n;
int a, b;
scanf("%d", &n);
graph = vector<vector<int> >(n + 1);
for (int i = 0; i < 2 * n; i++) {
... | CPP |
263_C. Circle of Numbers | One day Vasya came up to the blackboard and wrote out n distinct integers from 1 to n in some order in a circle. Then he drew arcs to join the pairs of integers (a, b) (a ≠ b), that are either each other's immediate neighbors in the circle, or there is number c, such that a and с are immediate neighbors, and b and c ar... | 2 | 9 | #include <bits/stdc++.h>
std::list<int> edge[100111];
std::list<int>::const_iterator it;
std::vector<int> ans;
int n, i, j, k, l, max;
bool done[100111];
bool dfs(int now) {
if (now == l) return true;
for (std::list<int>::const_iterator it1(edge[ans[now]].begin());
it1 != edge[ans[now]].end(); ++it1)
if ... | CPP |
263_C. Circle of Numbers | One day Vasya came up to the blackboard and wrote out n distinct integers from 1 to n in some order in a circle. Then he drew arcs to join the pairs of integers (a, b) (a ≠ b), that are either each other's immediate neighbors in the circle, or there is number c, such that a and с are immediate neighbors, and b and c ar... | 2 | 9 | #include <bits/stdc++.h>
using namespace std;
vector<int> a[101011], b[101011];
bool visited[101011];
int ans[101011];
int main() {
int n;
cin >> n;
for (int i = 0; i < n * 2; i++) {
int u, v;
cin >> u >> v;
a[u].push_back(v);
a[v].push_back(u);
}
bool nosolution = false;
for (int i = 1; i <... | CPP |
263_C. Circle of Numbers | One day Vasya came up to the blackboard and wrote out n distinct integers from 1 to n in some order in a circle. Then he drew arcs to join the pairs of integers (a, b) (a ≠ b), that are either each other's immediate neighbors in the circle, or there is number c, such that a and с are immediate neighbors, and b and c ar... | 2 | 9 | #include <bits/stdc++.h>
using namespace std;
int vis[100100], res[100100];
vector<int> Q[100100];
int main() {
int n, x, y, p, t;
while (cin >> n) {
for (int i = (int)0; i < (int)100100; i++) Q[i].clear(), vis[i] = 0;
for (int i = (int)0; i < (int)2 * n; i++)
cin >> x >> y, Q[x].push_back(y), Q[y].pu... | CPP |
263_C. Circle of Numbers | One day Vasya came up to the blackboard and wrote out n distinct integers from 1 to n in some order in a circle. Then he drew arcs to join the pairs of integers (a, b) (a ≠ b), that are either each other's immediate neighbors in the circle, or there is number c, such that a and с are immediate neighbors, and b and c ar... | 2 | 9 | #include <bits/stdc++.h>
using namespace std;
vector<int> tab[100100], ans;
int n, ls[10];
bool used[100100];
bool chek(int a, int b) {
for (int i = 0; i < 4; i++)
if (tab[a][i] == b) return true;
return false;
}
int main() {
scanf("%d", &n);
for (int i = 0; i < n + n; i++) {
int a, b;
scanf("%d%d",... | CPP |
263_C. Circle of Numbers | One day Vasya came up to the blackboard and wrote out n distinct integers from 1 to n in some order in a circle. Then he drew arcs to join the pairs of integers (a, b) (a ≠ b), that are either each other's immediate neighbors in the circle, or there is number c, such that a and с are immediate neighbors, and b and c ar... | 2 | 9 | import java.io.*;
import java.util.*;
public class C {
BufferedReader br;
PrintWriter out;
StringTokenizer st;
boolean eof;
HashSet<Integer>[] g;
int n;
void checkAndOutput(int[] ans) {
for (int i = 0; i < n; i++) {
int v = ans[i];
int j = i + 1;
if (j >= n)
j -= n;
if (!g[v].contains(ans[... | JAVA |
263_C. Circle of Numbers | One day Vasya came up to the blackboard and wrote out n distinct integers from 1 to n in some order in a circle. Then he drew arcs to join the pairs of integers (a, b) (a ≠ b), that are either each other's immediate neighbors in the circle, or there is number c, such that a and с are immediate neighbors, and b and c ar... | 2 | 9 | #include <bits/stdc++.h>
using namespace std;
template <typename T>
inline void checkMax(T& a, const T& b) {
if (a < b) a = b;
}
template <typename T>
inline void checkMin(T& a, const T& b) {
if (a > b) a = b;
}
template <typename T>
struct LinkedEdge {
T data;
int dest;
LinkedEdge<T>* next;
};
template <int ... | CPP |
263_C. Circle of Numbers | One day Vasya came up to the blackboard and wrote out n distinct integers from 1 to n in some order in a circle. Then he drew arcs to join the pairs of integers (a, b) (a ≠ b), that are either each other's immediate neighbors in the circle, or there is number c, such that a and с are immediate neighbors, and b and c ar... | 2 | 9 | /**
* Created with IntelliJ IDEA.
* User: Venky
*/
import java.io.*;
import java.util.*;
public class Main {
static void solve() throws IOException {
int n = nextInt();
int flag = 1;
int[][] edges = new int[n][4];
int[] index = new int[n];
int[] ret = new int[n];
... | JAVA |
263_C. Circle of Numbers | One day Vasya came up to the blackboard and wrote out n distinct integers from 1 to n in some order in a circle. Then he drew arcs to join the pairs of integers (a, b) (a ≠ b), that are either each other's immediate neighbors in the circle, or there is number c, such that a and с are immediate neighbors, and b and c ar... | 2 | 9 | #include <bits/stdc++.h>
int ao[100000][4];
int connected(int u, int v) {
int h;
for (h = 0; h < 4; h++)
if (ao[u][h] == v) return 1;
return 0;
}
int qq[100000];
int solve(int n, int u, int v, int w) {
int h, i, x;
qq[0] = u, qq[1] = v, qq[2] = w;
for (i = 3; i < n; i++) {
for (h = 0; h < 4; h++) {
... | CPP |
263_C. Circle of Numbers | One day Vasya came up to the blackboard and wrote out n distinct integers from 1 to n in some order in a circle. Then he drew arcs to join the pairs of integers (a, b) (a ≠ b), that are either each other's immediate neighbors in the circle, or there is number c, such that a and с are immediate neighbors, and b and c ar... | 2 | 9 | #include <bits/stdc++.h>
using namespace std;
int n, x, y, cnt[100001];
bool vis[100001];
vector<vector<int> > v;
vector<int> res;
bool isGd(int node) {
int c = 0;
for (int i = (0); i < ((int)v[node].size()); i++)
if (v[node][i] == res[(int)res.size() - 1] ||
v[node][i] == res[(int)res.size() - 2])
... | CPP |
263_C. Circle of Numbers | One day Vasya came up to the blackboard and wrote out n distinct integers from 1 to n in some order in a circle. Then he drew arcs to join the pairs of integers (a, b) (a ≠ b), that are either each other's immediate neighbors in the circle, or there is number c, such that a and с are immediate neighbors, and b and c ar... | 2 | 9 | import java.util.Arrays;
import java.util.Scanner;
// http://codeforces.com/contest/263/problem/C
public class CircleofNumbers {
public static void main(String[] args) {
Scanner s = new Scanner(System.in);
int n = s.nextInt();
int[][] adj = new int[n + 1][4];
int[] cnt = new int[n ... | JAVA |
263_C. Circle of Numbers | One day Vasya came up to the blackboard and wrote out n distinct integers from 1 to n in some order in a circle. Then he drew arcs to join the pairs of integers (a, b) (a ≠ b), that are either each other's immediate neighbors in the circle, or there is number c, such that a and с are immediate neighbors, and b and c ar... | 2 | 9 | #include <bits/stdc++.h>
using namespace std;
const long long maxn = 1e6 + 5;
const long long maxm = 500000 + 5;
const long long mod = 1000000007;
vector<int> e[200010], ans;
map<int, bool> vis[200010];
bool mark[200010];
int n;
int main() {
scanf("%d", &n);
for (int i = 0; i < 2 * n; i++) {
int x, y;
scanf... | CPP |
263_C. Circle of Numbers | One day Vasya came up to the blackboard and wrote out n distinct integers from 1 to n in some order in a circle. Then he drew arcs to join the pairs of integers (a, b) (a ≠ b), that are either each other's immediate neighbors in the circle, or there is number c, such that a and с are immediate neighbors, and b and c ar... | 2 | 9 | import java.io.BufferedReader;
import java.io.FileInputStream;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.HashSet;
public class CodeforcesR162Div2C {
public static int[] parseNumbers(String line, int n) {
int[] numbers = new int[n];
int idx = 0;
for(int i = 0; i < line.leng... | JAVA |
263_C. Circle of Numbers | One day Vasya came up to the blackboard and wrote out n distinct integers from 1 to n in some order in a circle. Then he drew arcs to join the pairs of integers (a, b) (a ≠ b), that are either each other's immediate neighbors in the circle, or there is number c, such that a and с are immediate neighbors, and b and c ar... | 2 | 9 | #include <bits/stdc++.h>
using namespace std;
using i64 = int64_t;
using u64 = uint64_t;
using pi64 = pair<i64, i64>;
constexpr i64 MAXN = 3 * 100 * 1000 + 5LL;
constexpr i64 MOD = 1000000007LL;
constexpr i64 INF64 = MOD * MOD;
bool is_possible(const vector<i64>& perm, const i64 N,
const vector<vector<... | CPP |
263_C. Circle of Numbers | One day Vasya came up to the blackboard and wrote out n distinct integers from 1 to n in some order in a circle. Then he drew arcs to join the pairs of integers (a, b) (a ≠ b), that are either each other's immediate neighbors in the circle, or there is number c, such that a and с are immediate neighbors, and b and c ar... | 2 | 9 | #include <bits/stdc++.h>
using namespace std;
const int MAXN = 100009;
int n, i, j, k, a[MAXN][5], s[MAXN], ans[MAXN], first, ct, l, now, re[10];
bool used[MAXN], flag;
struct state {
int num, co;
} S[10];
int ex(int i, int j) {
int b, c, d = 1;
for (b = 0; b < 4; b++)
if (a[i][b] != j) {
for (c = 0; c ... | CPP |
263_C. Circle of Numbers | One day Vasya came up to the blackboard and wrote out n distinct integers from 1 to n in some order in a circle. Then he drew arcs to join the pairs of integers (a, b) (a ≠ b), that are either each other's immediate neighbors in the circle, or there is number c, such that a and с are immediate neighbors, and b and c ar... | 2 | 9 | #include <bits/stdc++.h>
using namespace std;
const double eps = 1e-9;
const int inf = (int)1e9;
const int MAX_N = 200 * 1000 + 100;
int n;
int adj[MAX_N][4];
int len[MAX_N];
vector<int> ans;
int inter(int ii, int jj) {
int i = 0, j = 0;
int ret = 0;
while (i < 4 && j < 4) {
if (adj[ii][i] == adj[jj][j]) {
... | CPP |
263_C. Circle of Numbers | One day Vasya came up to the blackboard and wrote out n distinct integers from 1 to n in some order in a circle. Then he drew arcs to join the pairs of integers (a, b) (a ≠ b), that are either each other's immediate neighbors in the circle, or there is number c, such that a and с are immediate neighbors, and b and c ar... | 2 | 9 | #!/usr/local/bin/python3
from __future__ import print_function
import sys
DEBUG = '-d' in sys.argv
def debug(*args, **kwargs):
if DEBUG:
print(*args, file=sys.stderr, **kwargs)
return None
def main():
n = int(input())
cnt = [0] * (n + 1)
edge = []
for i in range(0, n + 1):
... | PYTHON3 |
263_C. Circle of Numbers | One day Vasya came up to the blackboard and wrote out n distinct integers from 1 to n in some order in a circle. Then he drew arcs to join the pairs of integers (a, b) (a ≠ b), that are either each other's immediate neighbors in the circle, or there is number c, such that a and с are immediate neighbors, and b and c ar... | 2 | 9 | import java.io.*;
import java.math.*;
import static java.lang.Math.*;
import static java.util.Arrays.*;
import java.util.*;
public class Main
{
public static void main(String[] args) throws IOException
{
new Main().run();
}
StreamTokenizer in;
PrintWriter out;
//deb///////////////////////////... | JAVA |
263_C. Circle of Numbers | One day Vasya came up to the blackboard and wrote out n distinct integers from 1 to n in some order in a circle. Then he drew arcs to join the pairs of integers (a, b) (a ≠ b), that are either each other's immediate neighbors in the circle, or there is number c, such that a and с are immediate neighbors, and b and c ar... | 2 | 9 | #include <bits/stdc++.h>
using namespace std;
vector<int> edges[100010], edges2[100010], out;
bool marked2[100010];
int marked[100010];
bool dver[100010];
int main() {
int n;
cin >> n;
for (int i = 0; i < 2 * n; i++) {
int a, b;
cin >> a >> b;
edges[a].push_back(b);
edges[b].push_back(a);
}
if... | CPP |
263_C. Circle of Numbers | One day Vasya came up to the blackboard and wrote out n distinct integers from 1 to n in some order in a circle. Then he drew arcs to join the pairs of integers (a, b) (a ≠ b), that are either each other's immediate neighbors in the circle, or there is number c, such that a and с are immediate neighbors, and b and c ar... | 2 | 9 | #include <bits/stdc++.h>
using namespace std;
const int OO = (int)2e9;
const double EPS = 1e-9;
int n;
int g[123456][5];
map<int, int> freq;
bool vis[123456];
int sol[123456];
bool can(int a, int b, int c, int idx) {
sol[idx] = b;
if (idx < n) {
vis[b] = 1;
for (int i = 0; i < 4; i++) {
int j = g[b][i... | CPP |
263_C. Circle of Numbers | One day Vasya came up to the blackboard and wrote out n distinct integers from 1 to n in some order in a circle. Then he drew arcs to join the pairs of integers (a, b) (a ≠ b), that are either each other's immediate neighbors in the circle, or there is number c, such that a and с are immediate neighbors, and b and c ar... | 2 | 9 | import sun.reflect.generics.tree.Tree;
import java.io.*;
import java.util.ArrayList;
import java.util.HashSet;
import java.util.Set;
import java.util.TreeSet;
import java.util.stream.Collectors;
public class Main {
static StreamTokenizer st = new StreamTokenizer(new BufferedReader(new InputStreamReader(System.in)... | JAVA |
263_C. Circle of Numbers | One day Vasya came up to the blackboard and wrote out n distinct integers from 1 to n in some order in a circle. Then he drew arcs to join the pairs of integers (a, b) (a ≠ b), that are either each other's immediate neighbors in the circle, or there is number c, such that a and с are immediate neighbors, and b and c ar... | 2 | 9 | import java.util.*;
import java.io.*;
public class hercules {
public static int findNext(HashSet<Integer>over,ArrayList<Integer> []array,int prev,int check[],int ptr){
for(int a:array[prev]){
if(over.contains(a))continue;
int cnt=0;
for(int b:array[a]){
if(check[ptr-1]==b)
cnt++;
}
... | JAVA |
263_C. Circle of Numbers | One day Vasya came up to the blackboard and wrote out n distinct integers from 1 to n in some order in a circle. Then he drew arcs to join the pairs of integers (a, b) (a ≠ b), that are either each other's immediate neighbors in the circle, or there is number c, such that a and с are immediate neighbors, and b and c ar... | 2 | 9 | #include <bits/stdc++.h>
using namespace std;
vector<int> a[100020];
int n, m, x, y;
int v[100020];
int w[100020];
int s[100020];
int ooo = 1e9;
int ok(int x) {
ooo++;
for (int i : a[s[x]]) v[i] = ooo;
if (v[s[(x + 1) % n]] != ooo) return 0;
if (v[s[(x + 2) % n]] != ooo) return 0;
if (v[s[(x - 1 + n) % n]] !=... | CPP |
263_C. Circle of Numbers | One day Vasya came up to the blackboard and wrote out n distinct integers from 1 to n in some order in a circle. Then he drew arcs to join the pairs of integers (a, b) (a ≠ b), that are either each other's immediate neighbors in the circle, or there is number c, such that a and с are immediate neighbors, and b and c ar... | 2 | 9 | #include <bits/stdc++.h>
using namespace std;
int a[100002][5];
int f[100002], ans[100002], v[100002];
int n, ff;
void dfs(int l) {
if (ff == 1) return;
int s = 0;
int i;
if (l > n) {
s = 0;
for (i = 0; i < f[ans[n]]; i++) {
if (a[ans[n]][i] == 1) {
s++;
}
if (a[ans[n]][i] == a... | CPP |
263_C. Circle of Numbers | One day Vasya came up to the blackboard and wrote out n distinct integers from 1 to n in some order in a circle. Then he drew arcs to join the pairs of integers (a, b) (a ≠ b), that are either each other's immediate neighbors in the circle, or there is number c, such that a and с are immediate neighbors, and b and c ar... | 2 | 9 | import java.util.*;
import java.lang.*;
import java.math.*;
import java.io.*;
import static java.lang.Math.*;
import static java.util.Arrays.*;
import static java.util.Collections.*;
public class C{
// Scanner sc=new Scanner(System.in);
BufferedReader br=new BufferedReader(new InputStreamReader(System.in));
int IN... | JAVA |
263_C. Circle of Numbers | One day Vasya came up to the blackboard and wrote out n distinct integers from 1 to n in some order in a circle. Then he drew arcs to join the pairs of integers (a, b) (a ≠ b), that are either each other's immediate neighbors in the circle, or there is number c, such that a and с are immediate neighbors, and b and c ar... | 2 | 9 | import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.HashSet;
import java.util.Random;
import java.util.StringTokenizer;
public class Solution{
static int n;
static HashSet<Inte... | JAVA |
263_C. Circle of Numbers | One day Vasya came up to the blackboard and wrote out n distinct integers from 1 to n in some order in a circle. Then he drew arcs to join the pairs of integers (a, b) (a ≠ b), that are either each other's immediate neighbors in the circle, or there is number c, such that a and с are immediate neighbors, and b and c ar... | 2 | 9 | #include <bits/stdc++.h>
using namespace std;
vector<int> vec[100005];
vector<int> ans;
int visited[100005];
int main() {
long long n, x, y, flag = 0, prev = 1, tempx, tempy, flag2 = 0;
cin >> n;
for (int i = 0; i < 2 * n; i++) {
cin >> x >> y;
vec[x].push_back(y);
vec[y].push_back(x);
}
for (int ... | CPP |
263_C. Circle of Numbers | One day Vasya came up to the blackboard and wrote out n distinct integers from 1 to n in some order in a circle. Then he drew arcs to join the pairs of integers (a, b) (a ≠ b), that are either each other's immediate neighbors in the circle, or there is number c, such that a and с are immediate neighbors, and b and c ar... | 2 | 9 | import java.util.*;
import java.io.*;
import java.math.BigInteger;
import static java.lang.Math.*;
public class Main {
int [] way;
boolean check (int n, int [][] a){
boolean used[] = new boolean[n];
used[0] = used[way[1]] = used[way[2]] = true;
for (int i = 3; i < n; i++){
boolean flag = false;
... | JAVA |
263_C. Circle of Numbers | One day Vasya came up to the blackboard and wrote out n distinct integers from 1 to n in some order in a circle. Then he drew arcs to join the pairs of integers (a, b) (a ≠ b), that are either each other's immediate neighbors in the circle, or there is number c, such that a and с are immediate neighbors, and b and c ar... | 2 | 9 | #include <bits/stdc++.h>
using namespace std;
int n;
vector<vector<int> > adj(1e5 + 1);
set<int> rem;
vector<int> ord;
void search(int pred1, int pred2) {
if (ord.size() == n) return;
int nxt = 0;
for (int j = 0; j < 4 && nxt == 0; j++) {
for (int k = 0; k < 4; k++) {
int x = adj[pred1][j], y = adj[pred... | CPP |
263_C. Circle of Numbers | One day Vasya came up to the blackboard and wrote out n distinct integers from 1 to n in some order in a circle. Then he drew arcs to join the pairs of integers (a, b) (a ≠ b), that are either each other's immediate neighbors in the circle, or there is number c, such that a and с are immediate neighbors, and b and c ar... | 2 | 9 | #include <bits/stdc++.h>
using namespace std;
int n, a, b;
vector<int> adj[100010];
map<pair<int, int>, int> m;
vector<int> res;
bool visited[100010];
bool tenta(int a, int b, int c, int size) {
visited[a] = visited[b] = visited[c] = true;
if (m[pair<int, int>(a, b)] and m[pair<int, int>(b, c)] and
m[pair<int... | CPP |
263_C. Circle of Numbers | One day Vasya came up to the blackboard and wrote out n distinct integers from 1 to n in some order in a circle. Then he drew arcs to join the pairs of integers (a, b) (a ≠ b), that are either each other's immediate neighbors in the circle, or there is number c, such that a and с are immediate neighbors, and b and c ar... | 2 | 9 | #include <bits/stdc++.h>
using namespace std;
const long long N = 1e5 + 7;
vector<long long> g[N];
long long ans[N];
bool used[N];
signed main() {
ios_base::sync_with_stdio(0);
cin.tie(0);
long long n;
cin >> n;
for (long long i = 0; i < 2 * n; ++i) {
long long u, v;
cin >> u >> v;
g[u].push_back(... | CPP |
263_C. Circle of Numbers | One day Vasya came up to the blackboard and wrote out n distinct integers from 1 to n in some order in a circle. Then he drew arcs to join the pairs of integers (a, b) (a ≠ b), that are either each other's immediate neighbors in the circle, or there is number c, such that a and с are immediate neighbors, and b and c ar... | 2 | 9 | #include <bits/stdc++.h>
using namespace std;
const int MAXN = 100000;
int n;
vector<int> graf[MAXN + 3];
bool odw[MAXN + 3];
int st[MAXN + 3], color[MAXN + 3];
int wyn[MAXN + 3], ind;
void wczytaj() {
scanf("%d", &n);
for (int i = 0; i < 2 * n; i++) {
int a, b;
scanf("%d %d", &a, &b);
graf[a].push_back... | CPP |
263_C. Circle of Numbers | One day Vasya came up to the blackboard and wrote out n distinct integers from 1 to n in some order in a circle. Then he drew arcs to join the pairs of integers (a, b) (a ≠ b), that are either each other's immediate neighbors in the circle, or there is number c, such that a and с are immediate neighbors, and b and c ar... | 2 | 9 | #include <bits/stdc++.h>
#pragma comment(linker, "/STACK:65777216")
using namespace std;
const long double EPS = 1e-11;
const int INF = 2000000000;
const long long lINF = 9223372036854775807;
const long double PI = 3.14159265358979323846;
vector<long long> ans;
void cans() {
for (int i = 0; i < ans.size(); i++) cout ... | CPP |
263_C. Circle of Numbers | One day Vasya came up to the blackboard and wrote out n distinct integers from 1 to n in some order in a circle. Then he drew arcs to join the pairs of integers (a, b) (a ≠ b), that are either each other's immediate neighbors in the circle, or there is number c, such that a and с are immediate neighbors, and b and c ar... | 2 | 9 | #include <bits/stdc++.h>
using namespace std;
const int N = 100010;
vector<int> v[N];
int num[N];
bool vis[N];
int len, n;
bool Doit() {
int i;
for (i = 1; i <= n; i++) {
if (v[i].size() != 4) return 0;
}
return 1;
}
bool DFS(int a, int fa, int th) {
if (th == n + 1) return 1;
if (!vis[a]) {
int j;
... | CPP |
263_C. Circle of Numbers | One day Vasya came up to the blackboard and wrote out n distinct integers from 1 to n in some order in a circle. Then he drew arcs to join the pairs of integers (a, b) (a ≠ b), that are either each other's immediate neighbors in the circle, or there is number c, such that a and с are immediate neighbors, and b and c ar... | 2 | 9 | #include <bits/stdc++.h>
using namespace std;
const int MaxN = 1e5 + 10;
int n, u, v;
int ans[MaxN][5];
int cnt[MaxN];
int vis[MaxN];
int d[MaxN];
bool dfs(int a, int b, int k) {
d[k - 1] = a, d[k] = b;
if (k == n) return b == 1;
vis[b] = 1;
for (int i = 1; i <= 4; i++) {
int c = ans[b][i];
if (vis[c]) ... | CPP |
263_C. Circle of Numbers | One day Vasya came up to the blackboard and wrote out n distinct integers from 1 to n in some order in a circle. Then he drew arcs to join the pairs of integers (a, b) (a ≠ b), that are either each other's immediate neighbors in the circle, or there is number c, such that a and с are immediate neighbors, and b and c ar... | 2 | 9 | #include <bits/stdc++.h>
#pragma GCC optimize("Ofast")
using namespace std;
vector<set<int>> g;
int main() {
ios::sync_with_stdio(false);
cin.tie(0);
cout.tie(0);
int n;
cin >> n;
g.assign(n, set<int>());
for (int i = 0; i < 2 * n; ++i) {
int u, v;
cin >> u >> v;
u--, v--;
g[u].insert(v);
... | CPP |
263_C. Circle of Numbers | One day Vasya came up to the blackboard and wrote out n distinct integers from 1 to n in some order in a circle. Then he drew arcs to join the pairs of integers (a, b) (a ≠ b), that are either each other's immediate neighbors in the circle, or there is number c, such that a and с are immediate neighbors, and b and c ar... | 2 | 9 | #include <bits/stdc++.h>
using namespace std;
vector<int> v[100005], kip[100005], sol;
int chk[100005];
set<int> st;
inline void cycle(int a) {
sol.push_back(a);
chk[a] = 1;
if (chk[kip[a][0]] == 0) cycle(kip[a][0]);
if (chk[kip[a][1]] == 0) cycle(kip[a][1]);
return;
}
inline void PUT(int a) {
int j, now;
... | CPP |
263_C. Circle of Numbers | One day Vasya came up to the blackboard and wrote out n distinct integers from 1 to n in some order in a circle. Then he drew arcs to join the pairs of integers (a, b) (a ≠ b), that are either each other's immediate neighbors in the circle, or there is number c, such that a and с are immediate neighbors, and b and c ar... | 2 | 9 | from sys import stdin
all_in = stdin.readlines()
n = int(all_in[0])
pairs = list(map(lambda x: tuple(map(int, x.split())), all_in[1:]))
if n == 5:
print(1, 2, 3, 4, 5)
exit()
neigs = {i: set() for i in range(1, n + 1)}
for (a, b) in pairs:
neigs[a].add(b)
neigs[b].add(a)
for el in neigs.values():
... | PYTHON3 |
263_C. Circle of Numbers | One day Vasya came up to the blackboard and wrote out n distinct integers from 1 to n in some order in a circle. Then he drew arcs to join the pairs of integers (a, b) (a ≠ b), that are either each other's immediate neighbors in the circle, or there is number c, such that a and с are immediate neighbors, and b and c ar... | 2 | 9 | import java.util.*;
import java.io.*;
public class Main {
BufferedReader in;
StringTokenizer str = null;
PrintWriter out;
private String next() throws Exception{
if (str == null || !str.hasMoreElements())
str = new StringTokenizer(in.readLine());
return str.nextToken();
}
private int nextInt() throws... | JAVA |
263_C. Circle of Numbers | One day Vasya came up to the blackboard and wrote out n distinct integers from 1 to n in some order in a circle. Then he drew arcs to join the pairs of integers (a, b) (a ≠ b), that are either each other's immediate neighbors in the circle, or there is number c, such that a and с are immediate neighbors, and b and c ar... | 2 | 9 | #include <bits/stdc++.h>
using namespace std;
map<int, int> m[100001];
int ans[100001], vis[100001], n;
vector<int> v[100001];
void dfs(int pos) {
if (pos == n) {
if (m[ans[n - 1]].find(ans[1]) != m[ans[n - 1]].end() &&
m[ans[n]].find(ans[1]) != m[ans[n]].end() &&
m[ans[n]].find(ans[2]) != m[ans[n... | CPP |
263_C. Circle of Numbers | One day Vasya came up to the blackboard and wrote out n distinct integers from 1 to n in some order in a circle. Then he drew arcs to join the pairs of integers (a, b) (a ≠ b), that are either each other's immediate neighbors in the circle, or there is number c, such that a and с are immediate neighbors, and b and c ar... | 2 | 9 | import java.io.InputStreamReader;
import java.io.IOException;
import java.util.Arrays;
import java.util.ArrayList;
import java.io.BufferedReader;
import java.io.OutputStream;
import java.io.PrintWriter;
import java.util.StringTokenizer;
import java.io.InputStream;
/**
* Built using CHelper plug-in
* Actual solution ... | JAVA |
263_C. Circle of Numbers | One day Vasya came up to the blackboard and wrote out n distinct integers from 1 to n in some order in a circle. Then he drew arcs to join the pairs of integers (a, b) (a ≠ b), that are either each other's immediate neighbors in the circle, or there is number c, such that a and с are immediate neighbors, and b and c ar... | 2 | 9 | #include <bits/stdc++.h>
using namespace std;
#pragma comment(linker, "/STACK:256000000")
const int kN = 100 * 1000;
vector<int> gr[kN];
int cnt[kN];
vector<int> Perm() {
int a = 0;
for (int i = 0; i < gr[a].size(); ++i) {
int u = gr[a][i];
for (int j = 0; j < gr[u].size(); ++j) {
if (gr[u][j] == a) c... | CPP |
263_C. Circle of Numbers | One day Vasya came up to the blackboard and wrote out n distinct integers from 1 to n in some order in a circle. Then he drew arcs to join the pairs of integers (a, b) (a ≠ b), that are either each other's immediate neighbors in the circle, or there is number c, such that a and с are immediate neighbors, and b and c ar... | 2 | 9 | #include <bits/stdc++.h>
using namespace std;
int n, node[100005][5], ans[100005];
bool vis[100005];
bool ok(int k, int v) {
if (!k) return true;
for (int i = 1; i <= 4; i++)
if (node[k][i] == v) return true;
return false;
}
bool dfs(int u, int num) {
if (num == n) return true;
for (int i = 1; i <= 4; i++... | CPP |
263_C. Circle of Numbers | One day Vasya came up to the blackboard and wrote out n distinct integers from 1 to n in some order in a circle. Then he drew arcs to join the pairs of integers (a, b) (a ≠ b), that are either each other's immediate neighbors in the circle, or there is number c, such that a and с are immediate neighbors, and b and c ar... | 2 | 9 | import java.io.OutputStreamWriter;
import java.io.BufferedWriter;
import java.io.OutputStream;
import java.io.PrintWriter;
import java.io.Writer;
import java.util.List;
import java.io.IOException;
import java.util.InputMismatchException;
import java.util.ArrayList;
import java.util.NoSuchElementException;
import java.m... | JAVA |
263_C. Circle of Numbers | One day Vasya came up to the blackboard and wrote out n distinct integers from 1 to n in some order in a circle. Then he drew arcs to join the pairs of integers (a, b) (a ≠ b), that are either each other's immediate neighbors in the circle, or there is number c, such that a and с are immediate neighbors, and b and c ar... | 2 | 9 | import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.Com... | JAVA |
263_C. Circle of Numbers | One day Vasya came up to the blackboard and wrote out n distinct integers from 1 to n in some order in a circle. Then he drew arcs to join the pairs of integers (a, b) (a ≠ b), that are either each other's immediate neighbors in the circle, or there is number c, such that a and с are immediate neighbors, and b and c ar... | 2 | 9 | #include <bits/stdc++.h>
using namespace std;
int main() {
int n;
cin >> n;
vector<int> cnt(n);
vector<set<int>> g(n);
for (int i = 0; i < 2 * n; ++i) {
int u, v;
cin >> u >> v;
--u, --v;
g[u].insert(v);
g[v].insert(u);
cnt[v]++;
cnt[u]++;
}
for (auto elem : cnt) {
if (elem... | CPP |
263_C. Circle of Numbers | One day Vasya came up to the blackboard and wrote out n distinct integers from 1 to n in some order in a circle. Then he drew arcs to join the pairs of integers (a, b) (a ≠ b), that are either each other's immediate neighbors in the circle, or there is number c, such that a and с are immediate neighbors, and b and c ar... | 2 | 9 | #include <bits/stdc++.h>
using namespace std;
int n, dem, d[100010], kq[100010], dd[100010];
vector<int> a[100010];
void nhap() {
cin >> n;
int u, v;
for (int i = 1; i <= 2 * n; i++) {
scanf("%d%d", &u, &v);
a[u].push_back(v);
a[v].push_back(u);
}
}
void dfs(int x, int y, int z) {
int ok;
d[x] =... | CPP |
263_C. Circle of Numbers | One day Vasya came up to the blackboard and wrote out n distinct integers from 1 to n in some order in a circle. Then he drew arcs to join the pairs of integers (a, b) (a ≠ b), that are either each other's immediate neighbors in the circle, or there is number c, such that a and с are immediate neighbors, and b and c ar... | 2 | 9 | #include <bits/stdc++.h>
using namespace std;
int n, a, b, ans[100100], used[100100];
vector<int> adj[100100];
bool con(int a, int b) {
int i;
if (a == 0 || b == 0) return true;
for (i = 0; i < 4; i++)
if (adj[a][i] == b) return true;
return false;
}
void dfs(int p) {
int i;
if (p == n) {
if (!(con(... | CPP |
263_C. Circle of Numbers | One day Vasya came up to the blackboard and wrote out n distinct integers from 1 to n in some order in a circle. Then he drew arcs to join the pairs of integers (a, b) (a ≠ b), that are either each other's immediate neighbors in the circle, or there is number c, such that a and с are immediate neighbors, and b and c ar... | 2 | 9 | #include <bits/stdc++.h>
using namespace std;
bool ok = 1;
bool vis[100001] = {0};
vector<int> ng[100001], g[100001];
void print(int v, bool p) {
vis[v] = 1;
if (p) printf("%d ", v);
ok &= ng[v].size() == 2;
for (int i = 0; i < ng[v].size(); ++i) {
int u = ng[v][i];
if (!vis[u]) print(u, p);
}
}
inlin... | CPP |
263_C. Circle of Numbers | One day Vasya came up to the blackboard and wrote out n distinct integers from 1 to n in some order in a circle. Then he drew arcs to join the pairs of integers (a, b) (a ≠ b), that are either each other's immediate neighbors in the circle, or there is number c, such that a and с are immediate neighbors, and b and c ar... | 2 | 9 | #include <bits/stdc++.h>
using namespace std;
int A[100001][5];
int C[100001];
vector<int> V;
int n, flag;
void solve(int indx) {
int i, sz, temp[4], a, j;
if (flag) return;
if (A[indx][0] != 4) {
flag = 1;
printf("-1\n");
return;
}
sz = V.size();
if (V.size() == n) {
for (i = 0; i < n; i++)... | CPP |
263_C. Circle of Numbers | One day Vasya came up to the blackboard and wrote out n distinct integers from 1 to n in some order in a circle. Then he drew arcs to join the pairs of integers (a, b) (a ≠ b), that are either each other's immediate neighbors in the circle, or there is number c, such that a and с are immediate neighbors, and b and c ar... | 2 | 9 | #include <bits/stdc++.h>
using namespace std;
const long long OO = 1e9;
int n;
vector<int> c[100005];
int vis[100005];
int ans[100005];
int cot[100005];
bool _find(int x, int cc) {
for (int i = 0; i < c[x].size(); i++)
if (cc == c[x][i]) return 1;
return 0;
}
bool dfs(int x, int indx) {
if (indx == n) return ... | CPP |
263_C. Circle of Numbers | One day Vasya came up to the blackboard and wrote out n distinct integers from 1 to n in some order in a circle. Then he drew arcs to join the pairs of integers (a, b) (a ≠ b), that are either each other's immediate neighbors in the circle, or there is number c, such that a and с are immediate neighbors, and b and c ar... | 2 | 9 | import java.io.*;
import java.util.*;
import java.util.StringTokenizer;
public class SolutionC {
BufferedReader in;
StringTokenizer str;
PrintWriter out;
String SK;
String next() throws IOException {
while ((str == null) || (!str.hasMoreTokens())) {
SK = in.readLine();
if (SK == null)
return n... | JAVA |
263_C. Circle of Numbers | One day Vasya came up to the blackboard and wrote out n distinct integers from 1 to n in some order in a circle. Then he drew arcs to join the pairs of integers (a, b) (a ≠ b), that are either each other's immediate neighbors in the circle, or there is number c, such that a and с are immediate neighbors, and b and c ar... | 2 | 9 | import java.io.*;
import java.util.*;
public class C {
void run() throws IOException {
int n = ni(), m = 2 * n;
int[][] a = new int[n][4];
int[] b = new int[n];
boolean[] c = new boolean[n];
for (int i = 0; i < m; i++) {
int x = ni() - 1, y = ni() - 1;
... | JAVA |
263_C. Circle of Numbers | One day Vasya came up to the blackboard and wrote out n distinct integers from 1 to n in some order in a circle. Then he drew arcs to join the pairs of integers (a, b) (a ≠ b), that are either each other's immediate neighbors in the circle, or there is number c, such that a and с are immediate neighbors, and b and c ar... | 2 | 9 | #include <bits/stdc++.h>
using namespace std;
pair<int, int> ke[100005];
vector<int> a[100005], res;
map<pair<int, int>, int> mm;
int n, sl[100005], b[100005];
bool dd[100005];
void process() {
for (int i = (1); i <= (n); i++)
if (a[i].size() != 4) {
cout << -1 << endl;
exit(0);
}
for (int i = (... | CPP |
263_C. Circle of Numbers | One day Vasya came up to the blackboard and wrote out n distinct integers from 1 to n in some order in a circle. Then he drew arcs to join the pairs of integers (a, b) (a ≠ b), that are either each other's immediate neighbors in the circle, or there is number c, such that a and с are immediate neighbors, and b and c ar... | 2 | 9 | #include <bits/stdc++.h>
using namespace std;
vector<int> deg;
vector<vector<int> > adj;
set<long long> mat;
int N, depth = 0;
int vis[(int)1e5 + 5];
bool dfs(int f, int s, int t) {
if (depth == N - 3) return 1;
depth++;
for (int j = 0; j < ((int)adj[t].size()); j++) {
int nxt = adj[t][j];
if (mat.count(1... | CPP |
263_C. Circle of Numbers | One day Vasya came up to the blackboard and wrote out n distinct integers from 1 to n in some order in a circle. Then he drew arcs to join the pairs of integers (a, b) (a ≠ b), that are either each other's immediate neighbors in the circle, or there is number c, such that a and с are immediate neighbors, and b and c ar... | 2 | 9 | #include <bits/stdc++.h>
using namespace std;
int n, a, b, bylo[100007], uzyte[100007], t[100007];
vector<int> v[100007];
bool mozna;
bool check(int x) {
bylo[t[(x - 1 + n) % n]] = 1;
bylo[t[(x - 2 + n) % n]] = 1;
bylo[t[(x + 1) % n]] = 1;
bylo[t[(x + 2) % n]] = 1;
for (__typeof((v[t[x]]).begin()) it = ((v[t[... | CPP |
263_C. Circle of Numbers | One day Vasya came up to the blackboard and wrote out n distinct integers from 1 to n in some order in a circle. Then he drew arcs to join the pairs of integers (a, b) (a ≠ b), that are either each other's immediate neighbors in the circle, or there is number c, such that a and с are immediate neighbors, and b and c ar... | 2 | 9 | import sys, array #, time
#S = time.time()
readInts = lambda : map(int, raw_input().split())
#readArgs = lambda : raw_input().split()
#write = lambda *s: sys.stdout.write(' '.join(map(str, s)))
#sys.stdin = open('data.txt', 'r')
#sys.stdout = open('ans.txt', 'w')
n = readInts()[0]
if n == 5:
print 1, 2, 3, 4, 5
sys.e... | PYTHON |
263_C. Circle of Numbers | One day Vasya came up to the blackboard and wrote out n distinct integers from 1 to n in some order in a circle. Then he drew arcs to join the pairs of integers (a, b) (a ≠ b), that are either each other's immediate neighbors in the circle, or there is number c, such that a and с are immediate neighbors, and b and c ar... | 2 | 9 | import java.io.IOException;
import java.io.PrintWriter;
import java.util.Scanner;
public class Task161C {
static PrintWriter output;
static int[][] points = new int[100000+1][4];
/**
* @param args
* @throws IOException
*/
public static void main(String[] args) throws IOException {
output = ne... | JAVA |
263_C. Circle of Numbers | One day Vasya came up to the blackboard and wrote out n distinct integers from 1 to n in some order in a circle. Then he drew arcs to join the pairs of integers (a, b) (a ≠ b), that are either each other's immediate neighbors in the circle, or there is number c, such that a and с are immediate neighbors, and b and c ar... | 2 | 9 | #include <bits/stdc++.h>
using namespace std;
const int maxn = 100005;
map<pair<int, int>, int> mp;
vector<int> v[maxn << 1];
int cnt[maxn], sta[maxn], tot;
bool vis[maxn];
int n;
int dfs(int fa, int u, int t) {
if (vis[t]) return 0;
sta[++tot] = t;
if (tot == n) return 1;
vis[u] = 1;
for (int i = 0; i < 4; i... | CPP |
263_C. Circle of Numbers | One day Vasya came up to the blackboard and wrote out n distinct integers from 1 to n in some order in a circle. Then he drew arcs to join the pairs of integers (a, b) (a ≠ b), that are either each other's immediate neighbors in the circle, or there is number c, such that a and с are immediate neighbors, and b and c ar... | 2 | 9 | //package round161;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.PrintWriter;
import java.util.Arrays;
import java.util.InputMismatchException;
public class C {
InputStream is;
PrintWriter out;
String INPUT = "";
void solve()
{
int n = ni();
int... | JAVA |
263_C. Circle of Numbers | One day Vasya came up to the blackboard and wrote out n distinct integers from 1 to n in some order in a circle. Then he drew arcs to join the pairs of integers (a, b) (a ≠ b), that are either each other's immediate neighbors in the circle, or there is number c, such that a and с are immediate neighbors, and b and c ar... | 2 | 9 | #include <bits/stdc++.h>
using namespace std;
vector<int> e[100010];
int bfs[100010], v[100010], used[100010], an[100010], ha[100010], n, tt;
bool con(int x, int y) {
for (int i = 0; i < e[x].size(); i++) {
if (e[x][i] == y) return 1;
}
return 0;
}
bool check() {
int i;
for (i = 0; i < n; i++) {
if (i... | CPP |
263_C. Circle of Numbers | One day Vasya came up to the blackboard and wrote out n distinct integers from 1 to n in some order in a circle. Then he drew arcs to join the pairs of integers (a, b) (a ≠ b), that are either each other's immediate neighbors in the circle, or there is number c, such that a and с are immediate neighbors, and b and c ar... | 2 | 9 | #include <bits/stdc++.h>
using namespace std;
vector<int> e[100006];
int n;
bool nei(int a, int b) {
for (int i = 0; i < 4; i++) {
if (e[a][i] == b) return 1;
}
return 0;
}
bool is(int ans[], int x, int y) {
bool v[100006] = {0};
int i, j;
ans[0] = 1;
v[1] = 1;
ans[1] = e[1][x];
v[ans[1]] = 1;
a... | CPP |
263_C. Circle of Numbers | One day Vasya came up to the blackboard and wrote out n distinct integers from 1 to n in some order in a circle. Then he drew arcs to join the pairs of integers (a, b) (a ≠ b), that are either each other's immediate neighbors in the circle, or there is number c, such that a and с are immediate neighbors, and b and c ar... | 2 | 9 | #include <bits/stdc++.h>
using namespace std;
vector<int> v[100010], ans;
int in_d[100010], flag[100010], col;
bool no_flag;
int main() {
int n, i, m, a, b;
scanf("%d", &n);
m = 2 * n;
for (i = 1; i <= m; i++) {
scanf("%d %d", &a, &b);
in_d[a]++;
in_d[b]++;
v[a].push_back(b);
v[b].push_back(... | CPP |
263_C. Circle of Numbers | One day Vasya came up to the blackboard and wrote out n distinct integers from 1 to n in some order in a circle. Then he drew arcs to join the pairs of integers (a, b) (a ≠ b), that are either each other's immediate neighbors in the circle, or there is number c, such that a and с are immediate neighbors, and b and c ar... | 2 | 9 | #include <bits/stdc++.h>
using namespace std;
int main() {
int n;
scanf("%d", &n);
vector<vector<int> > G(n);
set<pair<int, int> > kraw;
for (int i = 0; i < 2 * n; ++i) {
int a, b;
scanf("%d %d", &a, &b);
--a;
--b;
G[a].push_back(b);
G[b].push_back(a);
if (a > b) swap(a, b);
kr... | CPP |
263_C. Circle of Numbers | One day Vasya came up to the blackboard and wrote out n distinct integers from 1 to n in some order in a circle. Then he drew arcs to join the pairs of integers (a, b) (a ≠ b), that are either each other's immediate neighbors in the circle, or there is number c, such that a and с are immediate neighbors, and b and c ar... | 2 | 9 | #include <bits/stdc++.h>
using namespace std;
vector<int> v[1 << 20];
int n, a, b, sol[1 << 20];
map<pair<int, int>, bool> hashy;
bool vi[1 << 20], is[10][10];
void dfs(int x, int pos) {
if (sol[pos] != -1) return;
vi[x] = 1;
sol[pos] = x;
int sz = v[x].size(), nxt;
for (int j = 0; j < sz; j++) {
nxt = v[... | CPP |
263_C. Circle of Numbers | One day Vasya came up to the blackboard and wrote out n distinct integers from 1 to n in some order in a circle. Then he drew arcs to join the pairs of integers (a, b) (a ≠ b), that are either each other's immediate neighbors in the circle, or there is number c, such that a and с are immediate neighbors, and b and c ar... | 2 | 9 | #include <bits/stdc++.h>
using namespace std;
const int max_n = 100005;
int n;
vector<int> a[max_n];
int res[max_n];
bool visited[max_n];
int same(int x, int y) {
int r = 0;
map<int, int> m;
for (int i = 0; i < 4; i++) {
m[a[x][i]]++;
}
for (int i = 0; i < 4; i++) {
if (m[a[y][i]] == 1) r++;
}
ret... | CPP |
263_C. Circle of Numbers | One day Vasya came up to the blackboard and wrote out n distinct integers from 1 to n in some order in a circle. Then he drew arcs to join the pairs of integers (a, b) (a ≠ b), that are either each other's immediate neighbors in the circle, or there is number c, such that a and с are immediate neighbors, and b and c ar... | 2 | 9 | #include <bits/stdc++.h>
using namespace std;
int adj[200011][30], deg[200011], V[200011], ans[200011], ok, cnt = 3;
map<pair<int, int>, int> vst;
void dfs(int u, int fa1) {
int vv = 0;
for (int i = 0; i < 4; i++) {
int v = adj[u][i];
if (V[v]) continue;
if (vst[pair<int, int>(v, fa1)]) {
V[v] = 1... | CPP |
263_C. Circle of Numbers | One day Vasya came up to the blackboard and wrote out n distinct integers from 1 to n in some order in a circle. Then he drew arcs to join the pairs of integers (a, b) (a ≠ b), that are either each other's immediate neighbors in the circle, or there is number c, such that a and с are immediate neighbors, and b and c ar... | 2 | 9 | #include <bits/stdc++.h>
using namespace std;
int n;
vector<int> g[100005];
int nb[100005][2];
bool visited[100005];
void solve6() {
int p[7], i, j;
memset(p, 0, sizeof(p));
for (i = 1; i <= 6; ++i) {
if (g[i].size() != 4) {
printf("-1\n");
return;
}
sort(g[i].begin(), g[i].end());
for... | CPP |
263_C. Circle of Numbers | One day Vasya came up to the blackboard and wrote out n distinct integers from 1 to n in some order in a circle. Then he drew arcs to join the pairs of integers (a, b) (a ≠ b), that are either each other's immediate neighbors in the circle, or there is number c, such that a and с are immediate neighbors, and b and c ar... | 2 | 9 | #include <bits/stdc++.h>
using namespace std;
vector<int> v[100001];
int check(int p, int q) {
int k = 0, u = 0, t = 0;
while (u < 4 && t < 4) {
if (v[p][u] == v[q][t])
k++, u++, t++;
else if (v[p][u] < v[q][t])
u++;
else
t++;
}
return k;
}
int main() {
int n, a, b;
cin >> n;
... | CPP |
263_C. Circle of Numbers | One day Vasya came up to the blackboard and wrote out n distinct integers from 1 to n in some order in a circle. Then he drew arcs to join the pairs of integers (a, b) (a ≠ b), that are either each other's immediate neighbors in the circle, or there is number c, such that a and с are immediate neighbors, and b and c ar... | 2 | 9 | #include <bits/stdc++.h>
using namespace std;
int n;
vector<int> a[100000 + 5], v;
bool vis[100000 + 5];
void DFS(int u) {
if (v.size() == n) {
for (int i = 0; i < v.size(); i++) printf("%d ", v[i]);
exit(0);
}
for (int i = 0; i < a[u].size(); i++) {
int k = a[u][i];
if (vis[k]) continue;
if (... | CPP |
263_C. Circle of Numbers | One day Vasya came up to the blackboard and wrote out n distinct integers from 1 to n in some order in a circle. Then he drew arcs to join the pairs of integers (a, b) (a ≠ b), that are either each other's immediate neighbors in the circle, or there is number c, such that a and с are immediate neighbors, and b and c ar... | 2 | 9 | #include <bits/stdc++.h>
using namespace std;
const int maxn = 100017;
int n, deg[maxn], arr[maxn], res[maxn];
vector<int> a[maxn];
bool free1[maxn];
bool check() {
int c, v;
memset(free1, 1, sizeof(free1));
for (int i = 1, _c = 3; i <= _c; i++) free1[arr[i]] = 0;
arr[n + 1] = arr[1];
arr[n + 2] = arr[2];
a... | CPP |
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