#include <bits/stdc++.h>
#pragma GCC optimize("O3")
#pragma GCC optimize("Ofast")
#pragma GCC optimize("unroll-loops")
#define int long long
#define mi(x, y) (x = min(x, y))
#define ma(x, y) (x = max(x, y))
using namespace std;
signed main(){
ios_base::sync_with_stdio(false);
cin.tie(0);
int n, m;
cin >> n >> m;
vector<int> deg(n);
for(int i = 0; i < m; ++i){
int x, y;
cin >> x >> y;
--x, --y;
++deg[x], ++deg[y];
}
int can = (m == n - 1 && (*max_element(deg.begin(), deg.end()) == n - 1 || *max_element(deg.begin(), deg.end()) == 2));
sort(deg.begin(), deg.end());
if(deg[0] == 1 && deg[1] == 1 && deg[2] == 1 && deg[3] == 2 && deg[4] == 3) can = 1;
if(can){
cout << "YES\n";
cout << "1\n1";
}
else{
cout << "NO\n";
}
return 0;
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
212 KB |
Output is correct |
2 |
Partially correct |
0 ms |
212 KB |
Failed to provide a successful strategy. |
3 |
Partially correct |
0 ms |
212 KB |
Failed to provide a successful strategy. |
4 |
Partially correct |
0 ms |
212 KB |
Failed to provide a successful strategy. |
5 |
Partially correct |
0 ms |
212 KB |
Failed to provide a successful strategy. |
6 |
Incorrect |
1 ms |
212 KB |
Output isn't correct |
7 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
212 KB |
Output is correct |
2 |
Partially correct |
0 ms |
212 KB |
Failed to provide a successful strategy. |
3 |
Partially correct |
0 ms |
212 KB |
Failed to provide a successful strategy. |
4 |
Partially correct |
0 ms |
212 KB |
Failed to provide a successful strategy. |
5 |
Partially correct |
0 ms |
212 KB |
Failed to provide a successful strategy. |
6 |
Partially correct |
0 ms |
212 KB |
Failed to provide a successful strategy. |
7 |
Partially correct |
0 ms |
212 KB |
Failed to provide a successful strategy. |
8 |
Partially correct |
0 ms |
212 KB |
Failed to provide a successful strategy. |
9 |
Partially correct |
0 ms |
212 KB |
Failed to provide a successful strategy. |
10 |
Partially correct |
0 ms |
212 KB |
Failed to provide a successful strategy. |
11 |
Partially correct |
1 ms |
212 KB |
Failed to provide a successful strategy. |
12 |
Partially correct |
0 ms |
212 KB |
Failed to provide a successful strategy. |
13 |
Partially correct |
0 ms |
212 KB |
Failed to provide a successful strategy. |
14 |
Partially correct |
1 ms |
212 KB |
Failed to provide a successful strategy. |
15 |
Partially correct |
0 ms |
212 KB |
Failed to provide a successful strategy. |
16 |
Partially correct |
1 ms |
212 KB |
Failed to provide a successful strategy. |
17 |
Partially correct |
0 ms |
260 KB |
Failed to provide a successful strategy. |
18 |
Partially correct |
1 ms |
212 KB |
Failed to provide a successful strategy. |
19 |
Partially correct |
1 ms |
212 KB |
Failed to provide a successful strategy. |
20 |
Partially correct |
1 ms |
212 KB |
Failed to provide a successful strategy. |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
212 KB |
Output is correct |
2 |
Partially correct |
0 ms |
212 KB |
Failed to provide a successful strategy. |
3 |
Partially correct |
0 ms |
212 KB |
Failed to provide a successful strategy. |
4 |
Partially correct |
0 ms |
212 KB |
Failed to provide a successful strategy. |
5 |
Partially correct |
0 ms |
212 KB |
Failed to provide a successful strategy. |
6 |
Incorrect |
1 ms |
212 KB |
Output isn't correct |
7 |
Halted |
0 ms |
0 KB |
- |