#include <bits/stdc++.h>
#define int long long
#define endl "\n"
using namespace std;
const int MAXN = 2e3;
int n, m, marc[MAXN][MAXN];
vector <int> g[MAXN];
void dfs(int a, int r)
{
marc[a][r] = 1;
for(auto v : g[a])
{
if(marc[v][r]) continue;
dfs(v, r);
}
}
main()
{
cin >> n >> m;
for(int i = 0; i < m; i++)
{
int a, b;
cin >> a >> b;
a--, b--;
g[a].push_back(b);
g[b].push_back(a);
}
if(m == n - 1)
{
cout << "YES" << endl;
cout << 4 * n << endl;
for(int i = 0; i < n; i++) cout << i + 1 << " " << i + 1 << " ";
for(int i = 0; i < n; i++) cout << i + 1 << " " << i + 1 << " ";
cout << endl;
}
else cout << "NO" << endl;
}
Compilation message
newspapers.cpp:17:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
17 | main()
| ^~~~
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Partially correct |
1 ms |
340 KB |
Provide a successful but not optimal strategy. |
2 |
Partially correct |
0 ms |
340 KB |
Provide a successful but not optimal strategy. |
3 |
Partially correct |
0 ms |
340 KB |
Failed to provide a successful strategy. |
4 |
Partially correct |
0 ms |
340 KB |
Failed to provide a successful strategy. |
5 |
Partially correct |
0 ms |
340 KB |
Provide a successful but not optimal strategy. |
6 |
Partially correct |
0 ms |
340 KB |
Failed to provide a successful strategy. |
7 |
Correct |
0 ms |
340 KB |
Output is correct |
8 |
Partially correct |
0 ms |
340 KB |
Failed to provide a successful strategy. |
9 |
Incorrect |
0 ms |
340 KB |
Output isn't correct |
10 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Partially correct |
0 ms |
340 KB |
Provide a successful but not optimal strategy. |
2 |
Partially correct |
0 ms |
340 KB |
Provide a successful but not optimal strategy. |
3 |
Partially correct |
0 ms |
340 KB |
Provide a successful but not optimal strategy. |
4 |
Partially correct |
0 ms |
340 KB |
Failed to provide a successful strategy. |
5 |
Partially correct |
1 ms |
340 KB |
Failed to provide a successful strategy. |
6 |
Partially correct |
0 ms |
340 KB |
Failed to provide a successful strategy. |
7 |
Partially correct |
0 ms |
340 KB |
Failed to provide a successful strategy. |
8 |
Partially correct |
0 ms |
340 KB |
Failed to provide a successful strategy. |
9 |
Partially correct |
0 ms |
340 KB |
Failed to provide a successful strategy. |
10 |
Partially correct |
0 ms |
340 KB |
Failed to provide a successful strategy. |
11 |
Partially correct |
1 ms |
340 KB |
Failed to provide a successful strategy. |
12 |
Partially correct |
1 ms |
340 KB |
Failed to provide a successful strategy. |
13 |
Partially correct |
1 ms |
340 KB |
Failed to provide a successful strategy. |
14 |
Partially correct |
1 ms |
340 KB |
Failed to provide a successful strategy. |
15 |
Partially correct |
1 ms |
340 KB |
Failed to provide a successful strategy. |
16 |
Partially correct |
1 ms |
340 KB |
Failed to provide a successful strategy. |
17 |
Partially correct |
1 ms |
340 KB |
Failed to provide a successful strategy. |
18 |
Partially correct |
1 ms |
340 KB |
Failed to provide a successful strategy. |
19 |
Partially correct |
1 ms |
340 KB |
Failed to provide a successful strategy. |
20 |
Partially correct |
1 ms |
340 KB |
Failed to provide a successful strategy. |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Partially correct |
1 ms |
340 KB |
Provide a successful but not optimal strategy. |
2 |
Partially correct |
0 ms |
340 KB |
Provide a successful but not optimal strategy. |
3 |
Partially correct |
0 ms |
340 KB |
Failed to provide a successful strategy. |
4 |
Partially correct |
0 ms |
340 KB |
Failed to provide a successful strategy. |
5 |
Partially correct |
0 ms |
340 KB |
Provide a successful but not optimal strategy. |
6 |
Partially correct |
0 ms |
340 KB |
Failed to provide a successful strategy. |
7 |
Correct |
0 ms |
340 KB |
Output is correct |
8 |
Partially correct |
0 ms |
340 KB |
Failed to provide a successful strategy. |
9 |
Incorrect |
0 ms |
340 KB |
Output isn't correct |
10 |
Halted |
0 ms |
0 KB |
- |