#include <bits/stdc++.h>
using namespace std;
int main() {
ios_base::sync_with_stdio(false); cin.tie(nullptr);
int n, m; cin >> n >> m;
vector<vector<int>> g(n + 1);
for (int i = 0; i < m; ++i) {
int a, b; cin >> a >> b;
g[a].push_back(b);
g[b].push_back(a);
}
bool binary = true;
int spec = 1;
for (int i = 1; i <= n; ++i) {
if (g[i].size() > 2) spec++;
}
if (spec > 2) binary = false;
if (m != n - 1 || !binary) {
cout << "NO\n";
} else {
cout << "YES\n";
cout << "1\n";
cout << "1\n";
}
return 0;
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
348 KB |
Output is correct |
2 |
Partially correct |
0 ms |
348 KB |
Failed to provide a successful strategy. |
3 |
Partially correct |
0 ms |
348 KB |
Failed to provide a successful strategy. |
4 |
Partially correct |
0 ms |
348 KB |
Failed to provide a successful strategy. |
5 |
Partially correct |
0 ms |
348 KB |
Failed to provide a successful strategy. |
6 |
Incorrect |
0 ms |
348 KB |
Output isn't correct |
7 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
348 KB |
Output is correct |
2 |
Partially correct |
0 ms |
348 KB |
Failed to provide a successful strategy. |
3 |
Partially correct |
0 ms |
348 KB |
Failed to provide a successful strategy. |
4 |
Partially correct |
0 ms |
348 KB |
Failed to provide a successful strategy. |
5 |
Partially correct |
0 ms |
348 KB |
Failed to provide a successful strategy. |
6 |
Partially correct |
0 ms |
348 KB |
Failed to provide a successful strategy. |
7 |
Partially correct |
0 ms |
356 KB |
Failed to provide a successful strategy. |
8 |
Partially correct |
0 ms |
348 KB |
Failed to provide a successful strategy. |
9 |
Partially correct |
0 ms |
348 KB |
Failed to provide a successful strategy. |
10 |
Partially correct |
0 ms |
348 KB |
Failed to provide a successful strategy. |
11 |
Partially correct |
0 ms |
348 KB |
Failed to provide a successful strategy. |
12 |
Partially correct |
0 ms |
348 KB |
Failed to provide a successful strategy. |
13 |
Partially correct |
0 ms |
348 KB |
Failed to provide a successful strategy. |
14 |
Partially correct |
0 ms |
348 KB |
Failed to provide a successful strategy. |
15 |
Partially correct |
0 ms |
348 KB |
Failed to provide a successful strategy. |
16 |
Partially correct |
0 ms |
348 KB |
Failed to provide a successful strategy. |
17 |
Partially correct |
0 ms |
348 KB |
Failed to provide a successful strategy. |
18 |
Partially correct |
1 ms |
348 KB |
Failed to provide a successful strategy. |
19 |
Partially correct |
0 ms |
348 KB |
Failed to provide a successful strategy. |
20 |
Partially correct |
0 ms |
348 KB |
Failed to provide a successful strategy. |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
348 KB |
Output is correct |
2 |
Partially correct |
0 ms |
348 KB |
Failed to provide a successful strategy. |
3 |
Partially correct |
0 ms |
348 KB |
Failed to provide a successful strategy. |
4 |
Partially correct |
0 ms |
348 KB |
Failed to provide a successful strategy. |
5 |
Partially correct |
0 ms |
348 KB |
Failed to provide a successful strategy. |
6 |
Incorrect |
0 ms |
348 KB |
Output isn't correct |
7 |
Halted |
0 ms |
0 KB |
- |