# include <stdio.h>
# include <bits/stdc++.h>
#define _USE_MATH_DEFINES_
#define ll long long
#define ld long double
#define Accepted 0
#define pb push_back
#define mp make_pair
#define sz(x) (int)(x.size())
#define every(x) x.begin(),x.end()
#define F first
#define S second
#define For(i,x,y) for (ll i = x; i <= y; i ++)
#define FOr(i,x,y) for (ll i = x; i >= y; i --)
#define SpeedForce ios_base::sync_with_stdio(0), cin.tie(0)
// ROAD to... Red
using namespace std;
inline bool isvowel (char c) {
c = tolower(c);
if (c == 'a' || c == 'e' || c == 'i' || c == 'y' || c == 'o' || c == 'u') return 1;
return 0;
}
const double eps = 0.000001;
const ld pi = acos(-1);
const int maxn = 1e7 + 9;
const int mod = 1e9 + 7;
const ll MOD = 1e18 + 9;
const ll INF = 1e18 + 123;
const int inf = 2e9 + 11;
const int mxn = 1e6 + 9;
const int N = 6e5 + 123;
const int M = 22;
const int pri = 997;
const int Magic = 2101;
const int dx[] = {-1, 0, 1, 0};
const int dy[] = {0, -1, 0, 1};
int n, m, k;
vector < int > g[N];
vector < int > gr[N];
int has[5050][5050];
int x[N], y[N];
int p[N], pos[N];
int dp[N][5];
int main () {
cin >> n >> m ;
For (i, 1, m) {
cin >> x[i] >> y[i];
g[x[i]].pb(y[i]);
g[y[i]].pb(x[i]);
has[x[i]][y[i]] = has[y[i]][x[i]] = 1;
}
For (i, 1, m) {
if (g[x[i]].size() >= n - 2) continue ;
if (g[y[i]].size() >= n - 2) continue ;
for (auto l : g[x[i]]) {
if (l == y[i]) continue;
for (auto r : g[y[i]]) {
if (r == x[i]) continue;
if (!has[l][y[i]] && !has[r][x[i]] && has[l][r]) {
cout << l << ' ' << x[i] << ' ' << y[i] << ' ' << r;
exit(0);
}
}
}
}
cout << "no";
exit(0);
For (i, 1, n) p[i] = i;
for (int i = 1; i <= 100; i ++) {
For (i, 1, n) pos[p[i]] = i, gr[i].clear();
For (i, 1, m) {
if (pos[x[i]] > pos[y[i]])
gr[x[i]].pb(y[i]);
else
gr[y[i]].pb(x[i]);
}
random_shuffle(p + 1, p + n + 1);
}
cout << "no";
return Accepted;
}
// Coded By OB
Compilation message
indcyc.cpp: In function 'int main()':
indcyc.cpp:62:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
if (g[x[i]].size() >= n - 2) continue ;
~~~~~~~~~~~~~~~^~~~~~~~
indcyc.cpp:63:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
if (g[y[i]].size() >= n - 2) continue ;
~~~~~~~~~~~~~~~^~~~~~~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
28 ms |
28536 KB |
Expected integer, but "no" found |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
28 ms |
28536 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
27 ms |
28712 KB |
Output is correct |
| 2 |
Correct |
26 ms |
28712 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
26 ms |
29020 KB |
Expected integer, but "no" found |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
29 ms |
29148 KB |
Expected integer, but "no" found |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
32 ms |
30240 KB |
Output is correct |
| 2 |
Incorrect |
33 ms |
30368 KB |
Expected integer, but "no" found |
| 3 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
47 ms |
30428 KB |
Expected integer, but "no" found |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Execution timed out |
1053 ms |
37564 KB |
Time limit exceeded |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Execution timed out |
1070 ms |
37564 KB |
Time limit exceeded |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
95 ms |
37564 KB |
Expected integer, but "no" found |
| 2 |
Halted |
0 ms |
0 KB |
- |
