#include <bits/stdc++.h>
using namespace std;
const int nx=1e3+5;
int n, m, u, v, dsu[nx], f;
int find(int x)
{
if (dsu[x]==x) return x;
return dsu[x]=find(dsu[x]);
}
int main()
{
cin.tie(NULL)->sync_with_stdio(false);
cin>>n>>m;
for (int i=1; i<=n; i++) dsu[i]=i;
for (int i=1; i<=m; i++)
{
cin>>u>>v;
if (find(u)==find(v)) f=1;
dsu[find(u)]=find(v);
}
if (f) cout<<"NO";
else
{
cout<<"YES\n";
cout<<n<<'\n';
for (int i=1; i<=n; i++) cout<<i<<' ';
}
}
# |
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 |
1 ms |
344 KB |
Failed to provide a successful strategy. |
5 |
Partially correct |
0 ms |
344 KB |
Failed to provide a successful strategy. |
6 |
Partially correct |
0 ms |
348 KB |
Failed to provide a successful strategy. |
7 |
Correct |
0 ms |
348 KB |
Output is correct |
8 |
Partially correct |
0 ms |
348 KB |
Failed to provide a successful strategy. |
9 |
Incorrect |
0 ms |
348 KB |
Output isn't correct |
10 |
Halted |
0 ms |
0 KB |
- |
# |
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 |
Partially correct |
1 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 |
604 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 |
348 KB |
Failed to provide a successful strategy. |
17 |
Partially correct |
0 ms |
348 KB |
Failed to provide a successful strategy. |
18 |
Partially correct |
0 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 |
1 ms |
344 KB |
Failed to provide a successful strategy. |
5 |
Partially correct |
0 ms |
344 KB |
Failed to provide a successful strategy. |
6 |
Partially correct |
0 ms |
348 KB |
Failed to provide a successful strategy. |
7 |
Correct |
0 ms |
348 KB |
Output is correct |
8 |
Partially correct |
0 ms |
348 KB |
Failed to provide a successful strategy. |
9 |
Incorrect |
0 ms |
348 KB |
Output isn't correct |
10 |
Halted |
0 ms |
0 KB |
- |