// Success consists of going from failure to failure without loss of enthusiasm
#include <bits/stdc++.h>
using namespace std;
#define nl '\n'
#define pb push_back
template<class T> using V = vector<T>;
int main() {
cin.tie(0)->sync_with_stdio(0);
// TIME TO IMPLEMENT FOR 40 MIN TO REALIZE THE IDEA IS WRONG!!
// (0-0)
int N, M; cin >> N >> M;
V<V<int>> adj(N); for(int e = 0; e < M; e++) {
int u, v; cin >> u >> v; --u, --v;
adj[u].pb(v);
adj[v].pb(u);
}
V<int> vis(N, 0), low(N, -1), disc(N, -1); int t = 0;
V<int> stk = {-1};
function<void(int, int)> dfs = [&](int u, int p) {
vis[u] = 1;
disc[u] = ++t; stk.pb(u);
int best = -1;
sort(begin(adj[u]), end(adj[u]), [&](int x, int y) {
return disc[x] > disc[y];
});
for(auto& v : adj[u]) if (v != p) {
if (vis[v]) {
// back edge -> cycle
best = max(best, disc[v]);
} else {
low[v] = max(low[u], best);
dfs(v, u);
}
}
int len = disc[u] - best + 1;
if (low[u] < best && len >= 4) {
int x = -1; for(auto& v : adj[u]) if (v != p) {
if (disc[v] == best) x = v;
}
while(stk.back() != x) { cout << stk.back() + 1 << " "; stk.pop_back(); }
cout << x + 1 << nl;
exit(0);
}
--t; stk.pop_back();
};
dfs(0, -1);
cout << "no" << nl;
return (0-0);
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
212 KB |
Output is correct |
2 |
Correct |
0 ms |
212 KB |
Output is correct |
3 |
Correct |
0 ms |
212 KB |
Output is correct |
4 |
Correct |
1 ms |
212 KB |
Output is correct |
5 |
Runtime error |
1 ms |
340 KB |
Execution killed with signal 11 |
6 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
1 ms |
212 KB |
Expected integer, but "no" found |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
0 ms |
212 KB |
Expected integer, but "no" found |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
212 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
1 ms |
340 KB |
Expected integer, but "no" found |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
340 KB |
Output is correct |
2 |
Incorrect |
1 ms |
340 KB |
Expected integer, but "no" found |
3 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
1 ms |
340 KB |
Expected integer, but "no" found |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
8 ms |
896 KB |
Expected integer, but "no" found |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
4 ms |
596 KB |
Expected integer, but "no" found |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
16 ms |
1344 KB |
Expected integer, but "no" found |
2 |
Halted |
0 ms |
0 KB |
- |