#include<bits/stdc++.h>
#define endl '\n'
using namespace std;
long long n, m, en;
vector<int> gr[300005];
long long ans=0;
int post[3005];
int vzm[3005];
void dfs(int v)
{
if(v==en)
{
for(int j=1; j<=n; j++) if(post[j]) vzm[j]=1;
return;
}
post[v]=1;
int brs=gr[v].size();
for(int i=0; i<brs; i++)
{
int nv=gr[v][i];
if(!post[nv]) dfs(nv);
}
post[v]=0;
}
int main()
{
ios::sync_with_stdio(0);
cin.tie(0);
cout.tie(0);
cin>>n>>m;
for(int i=0; i<m; i++)
{
int v, u;
cin>>v>>u;
gr[v].push_back(u);
gr[u].push_back(v);
}
for(int i=1; i<=n; i++)
{
for(int j=1; j<=n; j++)
{
if(i==j) continue;
for(int k=1; k<=n; k++) vzm[k]=0;
en=j;
dfs(i);
for(int k=1; k<=n; k++)
{
if(k==i || k==j) continue;
ans+=vzm[k];
post[k]=vzm[k]=0;
}
}
}
cout<<ans<<endl;
return 0;
}
/**
8 7
1 2
2 3
2 4
3 5
5 6
6 7
6 8
4 4
1 2
2 4
2 3
3 4
*/
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
2 ms |
7256 KB |
Output is correct |
2 |
Correct |
2 ms |
7260 KB |
Output is correct |
3 |
Correct |
2 ms |
7260 KB |
Output is correct |
4 |
Correct |
2 ms |
7260 KB |
Output is correct |
5 |
Correct |
2 ms |
7260 KB |
Output is correct |
6 |
Correct |
2 ms |
7260 KB |
Output is correct |
7 |
Correct |
2 ms |
7260 KB |
Output is correct |
8 |
Correct |
2 ms |
7508 KB |
Output is correct |
9 |
Correct |
20 ms |
7256 KB |
Output is correct |
10 |
Correct |
336 ms |
7260 KB |
Output is correct |
11 |
Correct |
2 ms |
7256 KB |
Output is correct |
12 |
Correct |
2 ms |
7260 KB |
Output is correct |
13 |
Correct |
2 ms |
7260 KB |
Output is correct |
14 |
Correct |
2 ms |
7260 KB |
Output is correct |
15 |
Correct |
2 ms |
7260 KB |
Output is correct |
16 |
Correct |
2 ms |
7416 KB |
Output is correct |
17 |
Correct |
2 ms |
7768 KB |
Output is correct |
18 |
Correct |
2 ms |
7516 KB |
Output is correct |
19 |
Correct |
2 ms |
7260 KB |
Output is correct |
20 |
Correct |
2 ms |
7260 KB |
Output is correct |
21 |
Correct |
2 ms |
7508 KB |
Output is correct |
22 |
Correct |
2 ms |
7260 KB |
Output is correct |
23 |
Correct |
2 ms |
7260 KB |
Output is correct |
24 |
Correct |
2 ms |
7260 KB |
Output is correct |
25 |
Correct |
2 ms |
7516 KB |
Output is correct |
26 |
Correct |
2 ms |
7516 KB |
Output is correct |
27 |
Correct |
2 ms |
7256 KB |
Output is correct |
28 |
Correct |
2 ms |
7260 KB |
Output is correct |
29 |
Correct |
2 ms |
7516 KB |
Output is correct |
30 |
Correct |
2 ms |
7260 KB |
Output is correct |
31 |
Correct |
2 ms |
7512 KB |
Output is correct |
32 |
Correct |
2 ms |
7516 KB |
Output is correct |
33 |
Correct |
2 ms |
7260 KB |
Output is correct |
34 |
Correct |
2 ms |
7504 KB |
Output is correct |
35 |
Correct |
2 ms |
7260 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
2 ms |
7256 KB |
Output is correct |
2 |
Correct |
2 ms |
7260 KB |
Output is correct |
3 |
Correct |
2 ms |
7260 KB |
Output is correct |
4 |
Correct |
2 ms |
7260 KB |
Output is correct |
5 |
Correct |
2 ms |
7260 KB |
Output is correct |
6 |
Correct |
2 ms |
7260 KB |
Output is correct |
7 |
Correct |
2 ms |
7260 KB |
Output is correct |
8 |
Correct |
2 ms |
7508 KB |
Output is correct |
9 |
Correct |
20 ms |
7256 KB |
Output is correct |
10 |
Correct |
336 ms |
7260 KB |
Output is correct |
11 |
Correct |
2 ms |
7256 KB |
Output is correct |
12 |
Correct |
2 ms |
7260 KB |
Output is correct |
13 |
Correct |
2 ms |
7260 KB |
Output is correct |
14 |
Correct |
2 ms |
7260 KB |
Output is correct |
15 |
Correct |
2 ms |
7260 KB |
Output is correct |
16 |
Correct |
2 ms |
7416 KB |
Output is correct |
17 |
Correct |
2 ms |
7768 KB |
Output is correct |
18 |
Correct |
2 ms |
7516 KB |
Output is correct |
19 |
Correct |
2 ms |
7260 KB |
Output is correct |
20 |
Correct |
2 ms |
7260 KB |
Output is correct |
21 |
Correct |
2 ms |
7508 KB |
Output is correct |
22 |
Correct |
2 ms |
7260 KB |
Output is correct |
23 |
Correct |
2 ms |
7260 KB |
Output is correct |
24 |
Correct |
2 ms |
7260 KB |
Output is correct |
25 |
Correct |
2 ms |
7516 KB |
Output is correct |
26 |
Correct |
2 ms |
7516 KB |
Output is correct |
27 |
Correct |
2 ms |
7256 KB |
Output is correct |
28 |
Correct |
2 ms |
7260 KB |
Output is correct |
29 |
Correct |
2 ms |
7516 KB |
Output is correct |
30 |
Correct |
2 ms |
7260 KB |
Output is correct |
31 |
Correct |
2 ms |
7512 KB |
Output is correct |
32 |
Correct |
2 ms |
7516 KB |
Output is correct |
33 |
Correct |
2 ms |
7260 KB |
Output is correct |
34 |
Correct |
2 ms |
7504 KB |
Output is correct |
35 |
Correct |
2 ms |
7260 KB |
Output is correct |
36 |
Correct |
2 ms |
7256 KB |
Output is correct |
37 |
Correct |
2 ms |
7260 KB |
Output is correct |
38 |
Correct |
32 ms |
7508 KB |
Output is correct |
39 |
Execution timed out |
1063 ms |
7260 KB |
Time limit exceeded |
40 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Execution timed out |
1012 ms |
10588 KB |
Time limit exceeded |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Execution timed out |
1045 ms |
7516 KB |
Time limit exceeded |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Execution timed out |
1020 ms |
10584 KB |
Time limit exceeded |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Execution timed out |
1064 ms |
7516 KB |
Time limit exceeded |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Execution timed out |
1022 ms |
10840 KB |
Time limit exceeded |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
2 ms |
7256 KB |
Output is correct |
2 |
Correct |
2 ms |
7260 KB |
Output is correct |
3 |
Correct |
2 ms |
7260 KB |
Output is correct |
4 |
Correct |
2 ms |
7260 KB |
Output is correct |
5 |
Correct |
2 ms |
7260 KB |
Output is correct |
6 |
Correct |
2 ms |
7260 KB |
Output is correct |
7 |
Correct |
2 ms |
7260 KB |
Output is correct |
8 |
Correct |
2 ms |
7508 KB |
Output is correct |
9 |
Correct |
20 ms |
7256 KB |
Output is correct |
10 |
Correct |
336 ms |
7260 KB |
Output is correct |
11 |
Correct |
2 ms |
7256 KB |
Output is correct |
12 |
Correct |
2 ms |
7260 KB |
Output is correct |
13 |
Correct |
2 ms |
7260 KB |
Output is correct |
14 |
Correct |
2 ms |
7260 KB |
Output is correct |
15 |
Correct |
2 ms |
7260 KB |
Output is correct |
16 |
Correct |
2 ms |
7416 KB |
Output is correct |
17 |
Correct |
2 ms |
7768 KB |
Output is correct |
18 |
Correct |
2 ms |
7516 KB |
Output is correct |
19 |
Correct |
2 ms |
7260 KB |
Output is correct |
20 |
Correct |
2 ms |
7260 KB |
Output is correct |
21 |
Correct |
2 ms |
7508 KB |
Output is correct |
22 |
Correct |
2 ms |
7260 KB |
Output is correct |
23 |
Correct |
2 ms |
7260 KB |
Output is correct |
24 |
Correct |
2 ms |
7260 KB |
Output is correct |
25 |
Correct |
2 ms |
7516 KB |
Output is correct |
26 |
Correct |
2 ms |
7516 KB |
Output is correct |
27 |
Correct |
2 ms |
7256 KB |
Output is correct |
28 |
Correct |
2 ms |
7260 KB |
Output is correct |
29 |
Correct |
2 ms |
7516 KB |
Output is correct |
30 |
Correct |
2 ms |
7260 KB |
Output is correct |
31 |
Correct |
2 ms |
7512 KB |
Output is correct |
32 |
Correct |
2 ms |
7516 KB |
Output is correct |
33 |
Correct |
2 ms |
7260 KB |
Output is correct |
34 |
Correct |
2 ms |
7504 KB |
Output is correct |
35 |
Correct |
2 ms |
7260 KB |
Output is correct |
36 |
Correct |
2 ms |
7256 KB |
Output is correct |
37 |
Correct |
2 ms |
7260 KB |
Output is correct |
38 |
Correct |
32 ms |
7508 KB |
Output is correct |
39 |
Execution timed out |
1063 ms |
7260 KB |
Time limit exceeded |
40 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
2 ms |
7256 KB |
Output is correct |
2 |
Correct |
2 ms |
7260 KB |
Output is correct |
3 |
Correct |
2 ms |
7260 KB |
Output is correct |
4 |
Correct |
2 ms |
7260 KB |
Output is correct |
5 |
Correct |
2 ms |
7260 KB |
Output is correct |
6 |
Correct |
2 ms |
7260 KB |
Output is correct |
7 |
Correct |
2 ms |
7260 KB |
Output is correct |
8 |
Correct |
2 ms |
7508 KB |
Output is correct |
9 |
Correct |
20 ms |
7256 KB |
Output is correct |
10 |
Correct |
336 ms |
7260 KB |
Output is correct |
11 |
Correct |
2 ms |
7256 KB |
Output is correct |
12 |
Correct |
2 ms |
7260 KB |
Output is correct |
13 |
Correct |
2 ms |
7260 KB |
Output is correct |
14 |
Correct |
2 ms |
7260 KB |
Output is correct |
15 |
Correct |
2 ms |
7260 KB |
Output is correct |
16 |
Correct |
2 ms |
7416 KB |
Output is correct |
17 |
Correct |
2 ms |
7768 KB |
Output is correct |
18 |
Correct |
2 ms |
7516 KB |
Output is correct |
19 |
Correct |
2 ms |
7260 KB |
Output is correct |
20 |
Correct |
2 ms |
7260 KB |
Output is correct |
21 |
Correct |
2 ms |
7508 KB |
Output is correct |
22 |
Correct |
2 ms |
7260 KB |
Output is correct |
23 |
Correct |
2 ms |
7260 KB |
Output is correct |
24 |
Correct |
2 ms |
7260 KB |
Output is correct |
25 |
Correct |
2 ms |
7516 KB |
Output is correct |
26 |
Correct |
2 ms |
7516 KB |
Output is correct |
27 |
Correct |
2 ms |
7256 KB |
Output is correct |
28 |
Correct |
2 ms |
7260 KB |
Output is correct |
29 |
Correct |
2 ms |
7516 KB |
Output is correct |
30 |
Correct |
2 ms |
7260 KB |
Output is correct |
31 |
Correct |
2 ms |
7512 KB |
Output is correct |
32 |
Correct |
2 ms |
7516 KB |
Output is correct |
33 |
Correct |
2 ms |
7260 KB |
Output is correct |
34 |
Correct |
2 ms |
7504 KB |
Output is correct |
35 |
Correct |
2 ms |
7260 KB |
Output is correct |
36 |
Correct |
2 ms |
7256 KB |
Output is correct |
37 |
Correct |
2 ms |
7260 KB |
Output is correct |
38 |
Correct |
32 ms |
7508 KB |
Output is correct |
39 |
Execution timed out |
1063 ms |
7260 KB |
Time limit exceeded |
40 |
Halted |
0 ms |
0 KB |
- |