#include <bits/stdc++.h>
using namespace std;
int n,m;
vector<int> g[1005];
int main()
{
ios_base::sync_with_stdio(false);
cin.tie(NULL);
cout.tie(NULL);
cin >> n >> m;
for (int i = 1; i <= m; i++)
{
int x,y;
cin >> x >> y;
g[x].push_back(y);
g[y].push_back(x);
}
if (m != n - 1)
{
cout << "NO";
return 0;
}
int nrgr = 0;
for (int i = 1; i <= n; i++)
if (g[i].size() >= 3)
nrgr++;
if (nrgr > 1)
{
cout << "NO";
return 0;
}
cout << "YES\n1\n1";
return 0;
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
344 KB |
Output is correct |
2 |
Partially correct |
0 ms |
344 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 |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
408 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 |
348 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 |
1 ms |
344 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 |
360 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. |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
344 KB |
Output is correct |
2 |
Partially correct |
0 ms |
344 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 |
- |