oj.uz

Submission #864615

# Submission time Handle Problem Language Result Execution time Memory
864615 2023-10-23T10:39:04 Z vnm06 Duathlon (APIO18_duathlon) C++14
0 / 100
 1000 ms 10840 KB 
#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)
{
    post[v]=1;
    int brs=gr[v].size();
    for(int i=0; i<brs; i++)
    {
        int nv=gr[v][i];
        if(nv==en)
        {
            for(int j=1; j<=n; j++) if(post[j]) vzm[j]=1;
            post[v]=0;
            return;
        }
        else 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


*/

Subtask #1
0 / 5.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 7256 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
0 / 11.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 7256 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0 / 8.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1046 ms 10588 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #4
0 / 10.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1039 ms 7516 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #5
0 / 13.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1027 ms 10576 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #6
0 / 15.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1046 ms 7512 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #7
0 / 20.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1022 ms 10840 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #8
0 / 8.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 7256 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #9
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 7256 KB Output isn't correct
2 Halted 0 ms 0 KB -