oj.uz

Submission #631374

# Submission time Handle Problem Language Result Execution time Memory
631374 2022-08-18T04:08:15 Z mdn2002 Jail (JOI22_jail) C++14
5 / 100
 729 ms 56364 KB 
#include<bits/stdc++.h>
using namespace std;
int n , m , st [200005][21] , dp [200005] , is [502][502] , s [200005] , t [200005] , vis [200005] , ff;
vector < int > gr [200005] , grr [200005];
void dfs ( int x , int p )
{
    dp [x] = dp [p] + 1;
    st [x][0] = p;
    for ( auto u : gr [x] )
    {
        if ( u == p ) continue;
        dfs ( u , x );
    }
}
void dfss ( int x )
{
    vis [x] = 1;
    for ( auto u : grr [x] )
    {
        if ( vis [u] == 1 )
        {
            ff = 1;
            continue;
        }
        else if ( vis [u] == 2 ) continue;
        else dfss ( u );
    }
    vis [x] = 2;
}
int lca ( int x , int y )
{
    if ( dp [x] > dp [y] ) swap ( x , y );
    int dif = dp [y] - dp [x];
    for ( int i = 0 ; i <= 20 ; i ++ )
    {
        if ( ( dif & ( 1 << i ) ) ) y = st [y][i];
    }
    if ( x == y ) return x;
    for ( int i = 20 ; i >= 0 ; i -- )
    {
        if ( st [x][i] != st [y][i] )
        {
            x = st [x][i];
            y = st [y][i];
        }
    }
    return st [x][0];
}
int inbet ( int x , int y , int z )
{
    if ( dp [z] > dp [x] && dp [z] > dp [y] ) return 0;
    int aa = lca ( x , y );
    if ( dp [aa] > dp [z] ) return 0;
    int a = lca ( x , z );
    int b = lca ( y , z );
    if ( a == z || b == z ) return 1;
    return 0;
}
int main()
{
    int q;
    cin >> q;
    while ( q -- )
    {
        ff = 0;
        cin >> n;
        for ( int i = 1 ; i <= n ; i ++ )
        {
            gr [i] . clear ();
            grr [i] . clear ();
            dp [i] = 0;
            vis [i] = 0;
            for ( int j = 0 ; j <= n ; j ++ ) is [i][j] = 0;
            for ( int j = 0 ; j <= 20 ; j ++ ) st [i][j] = 0;
        }
        for ( int i = 0 ; i < n - 1 ; i ++ )
        {
            int x , y;
            cin >> x >> y;
            gr [x] . push_back ( y );
            gr [y] . push_back ( x );
        }
        dfs ( 1 , 0 );
        for ( int i = 1 ; i <= 20 ; i ++ )
        {
            for ( int j = 1 ; j <= n ; j ++ ) st [j][i] = st [ st [j][ i - 1 ] ][ i - 1 ];
        }
        int fff = 0;
        cin >> m;
        for ( int i = 1 ; i <= m ; i ++ ) cin >> s [i] >> t [i];
        for ( int i = 1 ; i <= m ; i ++ )
        {
            for ( int j = 1 ; j <= m ; j ++ )
            {
                if ( i == j ) continue;
                if ( inbet ( s [i] , t [i] , s [j] ) )
                {
                    if ( inbet ( s [i] , t [i] , t [j] ) ) fff = 1;
                    grr [i] . push_back ( j );
                    is [i][j] = 1;
                }

                if ( inbet ( s [i] , t [i] , t [j] ) )
                {
                    if ( inbet ( s [i] , t [i] , s [j] ) ) fff = 1;
                    grr [j] . push_back ( i );
                    is [j][i] = 1;
                }
            }
        }
        if ( fff )
        {
            cout << "No" << endl;
            continue;
        }
        for ( int i = 1 ; i <= m ; i ++ )
        {
            for ( int j = 1 ; j <= m ; j ++ )
            {
                if ( is [i][j] && is [j][i] ) ff = 1;
            }
        }
        if ( ff ) cout << "No" << endl;
        else cout << "Yes" << endl;
    }
}

/*
1
4
1 2
2 3
3 4
2
1 3
4 2
*/

Subtask #1
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 9684 KB Output is correct
2 Correct 8 ms 9628 KB Output is correct
3 Correct 7 ms 9684 KB Output is correct
4 Correct 44 ms 9948 KB Output is correct
5 Correct 55 ms 9968 KB Output is correct
6 Correct 8 ms 10196 KB Output is correct
7 Correct 11 ms 10196 KB Output is correct
8 Correct 28 ms 10272 KB Output is correct
9 Correct 729 ms 24044 KB Output is correct
10 Runtime error 142 ms 56364 KB Execution killed with signal 11
11 Halted 0 ms 0 KB -

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 9684 KB Output is correct
2 Correct 6 ms 9684 KB Output is correct
3 Correct 9 ms 10196 KB Output is correct
4 Correct 9 ms 10196 KB Output is correct
5 Correct 8 ms 10196 KB Output is correct
6 Correct 17 ms 10228 KB Output is correct
7 Correct 9 ms 10196 KB Output is correct
8 Correct 8 ms 10196 KB Output is correct
9 Correct 11 ms 10204 KB Output is correct
10 Correct 11 ms 10252 KB Output is correct
11 Correct 8 ms 10196 KB Output is correct
12 Correct 7 ms 10196 KB Output is correct
13 Correct 11 ms 10196 KB Output is correct

Subtask #3
0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 9684 KB Output is correct
2 Correct 6 ms 9684 KB Output is correct
3 Correct 9 ms 10196 KB Output is correct
4 Correct 9 ms 10196 KB Output is correct
5 Correct 8 ms 10196 KB Output is correct
6 Correct 17 ms 10228 KB Output is correct
7 Correct 9 ms 10196 KB Output is correct
8 Correct 8 ms 10196 KB Output is correct
9 Correct 11 ms 10204 KB Output is correct
10 Correct 11 ms 10252 KB Output is correct
11 Correct 8 ms 10196 KB Output is correct
12 Correct 7 ms 10196 KB Output is correct
13 Correct 11 ms 10196 KB Output is correct
14 Incorrect 5 ms 9732 KB Output isn't correct
15 Halted 0 ms 0 KB -

Subtask #4
0 / 28.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 9684 KB Output is correct
2 Correct 6 ms 9684 KB Output is correct
3 Correct 9 ms 10196 KB Output is correct
4 Correct 9 ms 10196 KB Output is correct
5 Correct 8 ms 10196 KB Output is correct
6 Correct 17 ms 10228 KB Output is correct
7 Correct 9 ms 10196 KB Output is correct
8 Correct 8 ms 10196 KB Output is correct
9 Correct 11 ms 10204 KB Output is correct
10 Correct 11 ms 10252 KB Output is correct
11 Correct 8 ms 10196 KB Output is correct
12 Correct 7 ms 10196 KB Output is correct
13 Correct 11 ms 10196 KB Output is correct
14 Incorrect 5 ms 9732 KB Output isn't correct
15 Halted 0 ms 0 KB -

Subtask #5
0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 9684 KB Output is correct
2 Correct 6 ms 9684 KB Output is correct
3 Correct 9 ms 10196 KB Output is correct
4 Correct 9 ms 10196 KB Output is correct
5 Correct 8 ms 10196 KB Output is correct
6 Correct 17 ms 10228 KB Output is correct
7 Correct 9 ms 10196 KB Output is correct
8 Correct 8 ms 10196 KB Output is correct
9 Correct 11 ms 10204 KB Output is correct
10 Correct 11 ms 10252 KB Output is correct
11 Correct 8 ms 10196 KB Output is correct
12 Correct 7 ms 10196 KB Output is correct
13 Correct 11 ms 10196 KB Output is correct
14 Incorrect 5 ms 9732 KB Output isn't correct
15 Halted 0 ms 0 KB -

Subtask #6
0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 9704 KB Output is correct
2 Incorrect 5 ms 9684 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #7
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 9684 KB Output is correct
2 Correct 8 ms 9628 KB Output is correct
3 Correct 7 ms 9684 KB Output is correct
4 Correct 44 ms 9948 KB Output is correct
5 Correct 55 ms 9968 KB Output is correct
6 Correct 8 ms 10196 KB Output is correct
7 Correct 11 ms 10196 KB Output is correct
8 Correct 28 ms 10272 KB Output is correct
9 Correct 729 ms 24044 KB Output is correct
10 Runtime error 142 ms 56364 KB Execution killed with signal 11
11 Halted 0 ms 0 KB -