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Submission #573358

# Submission time Handle Problem Language Result Execution time Memory
573358 2022-06-06T12:54:26 Z vladislav11 Pipes (CEOI15_pipes) C++14
0 / 100
 1715 ms 65536 KB 
#include <bits/stdc++.h>

using namespace std;

int n, m;
vector< vector<int> > grp;
vector<int> a, used;

void dfs ( int v, int p )
{
    used[v] = 1;

    for ( auto& to : grp[v] )
    if ( to != p )
    {
        if ( used[to] )
        {
            a[v]++;
            a[to]--;
        }
        else
        {
            dfs( to, v );

            a[v] += a[to];

            if ( !a[to] )
                cout << v << ' ' << to << '\n';
        }
    }

    return;
}

int main ()
{
    ios_base::sync_with_stdio(0);
    cin.tie(0);

    cin >> n >> m;

    grp.assign( n+1, vector<int>() );

    for ( int i=0; i<m; i++ )
    {
        int u, v;
        cin >> u >> v;

        grp[u].push_back( v );
        grp[v].push_back( u );
    }

    a.assign( n+1, 0 );
    used.assign( n+1, 0 );

    for ( int i=1; i<=n; i++ )
    if ( !used[i] )
        dfs( i, -1 );

    return 0;
}

Subtask #1
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Incorrect 1 ms 212 KB Wrong number of edges
3 Halted 0 ms 0 KB -

Subtask #2
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 956 KB Output is correct
2 Incorrect 3 ms 720 KB Wrong number of edges
3 Halted 0 ms 0 KB -

Subtask #3
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 102 ms 8836 KB Output is correct
2 Incorrect 100 ms 8240 KB Wrong number of edges
3 Halted 0 ms 0 KB -

Subtask #4
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 192 ms 12376 KB Output is correct
2 Runtime error 230 ms 27788 KB Memory limit exceeded
3 Halted 0 ms 0 KB -

Subtask #5
0 / 10.0

# Verdict Execution time Memory Grader output
1 Runtime error 323 ms 23504 KB Memory limit exceeded
2 Halted 0 ms 0 KB -

Subtask #6
0 / 10.0

# Verdict Execution time Memory Grader output
1 Runtime error 576 ms 29624 KB Memory limit exceeded
2 Halted 0 ms 0 KB -

Subtask #7
0 / 10.0

# Verdict Execution time Memory Grader output
1 Runtime error 983 ms 65536 KB Memory limit exceeded
2 Halted 0 ms 0 KB -

Subtask #8
0 / 10.0

# Verdict Execution time Memory Grader output
1 Runtime error 1375 ms 65536 KB Memory limit exceeded
2 Halted 0 ms 0 KB -

Subtask #9
0 / 10.0

# Verdict Execution time Memory Grader output
1 Runtime error 1615 ms 65536 KB Execution killed with signal 9
2 Halted 0 ms 0 KB -

Subtask #10
0 / 10.0

# Verdict Execution time Memory Grader output
1 Runtime error 1715 ms 65536 KB Execution killed with signal 9
2 Halted 0 ms 0 KB -