oj.uz

답안 #631370

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
631370 2022-08-18T03:57:28 Z mdn2002 Jail (JOI22_jail) C++14
61 / 100
 5000 ms 35832 KB 
#include<bits/stdc++.h>
using namespace std;
int n , m , st [200005][21] , dp [200005] , 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 <= 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 );
                }

                if ( inbet ( s [i] , t [i] , t [j] ) )
                {
                    if ( inbet ( s [i] , t [i] , s [j] ) ) fff = 1;
                    grr [j] . push_back ( i );
                }
            }
        }
        if ( fff )
        {
            cout << "No" << endl;
            continue;
        }
        for ( int i = 1 ; i <= m ; i ++ )
        {
            if ( vis [i] == 0 ) dfss ( i );
        }
        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

# 결과 실행 시간 메모리 Grader output
1 Correct 7 ms 9684 KB Output is correct
2 Correct 5 ms 9684 KB Output is correct
3 Correct 5 ms 9684 KB Output is correct
4 Correct 36 ms 9624 KB Output is correct
5 Correct 50 ms 9700 KB Output is correct
6 Correct 8 ms 9684 KB Output is correct
7 Correct 7 ms 9684 KB Output is correct
8 Correct 27 ms 9804 KB Output is correct
9 Correct 616 ms 13896 KB Output is correct
10 Correct 160 ms 32548 KB Output is correct
11 Correct 26 ms 9840 KB Output is correct
12 Correct 382 ms 10868 KB Output is correct
13 Execution timed out 5047 ms 35832 KB Time limit exceeded
14 Halted 0 ms 0 KB -

Subtask #2
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 7 ms 9684 KB Output is correct
2 Correct 6 ms 9684 KB Output is correct
3 Correct 10 ms 9684 KB Output is correct
4 Correct 7 ms 9684 KB Output is correct
5 Correct 8 ms 9684 KB Output is correct
6 Correct 7 ms 9684 KB Output is correct
7 Correct 7 ms 9684 KB Output is correct
8 Correct 7 ms 9684 KB Output is correct
9 Correct 6 ms 9684 KB Output is correct
10 Correct 7 ms 9684 KB Output is correct
11 Correct 7 ms 9684 KB Output is correct
12 Correct 8 ms 9724 KB Output is correct
13 Correct 6 ms 9756 KB Output is correct

Subtask #3
16.0 / 16.0

# 결과 실행 시간 메모리 Grader output
1 Correct 7 ms 9684 KB Output is correct
2 Correct 6 ms 9684 KB Output is correct
3 Correct 10 ms 9684 KB Output is correct
4 Correct 7 ms 9684 KB Output is correct
5 Correct 8 ms 9684 KB Output is correct
6 Correct 7 ms 9684 KB Output is correct
7 Correct 7 ms 9684 KB Output is correct
8 Correct 7 ms 9684 KB Output is correct
9 Correct 6 ms 9684 KB Output is correct
10 Correct 7 ms 9684 KB Output is correct
11 Correct 7 ms 9684 KB Output is correct
12 Correct 8 ms 9724 KB Output is correct
13 Correct 6 ms 9756 KB Output is correct
14 Correct 6 ms 9616 KB Output is correct
15 Correct 6 ms 9684 KB Output is correct
16 Correct 8 ms 9740 KB Output is correct
17 Correct 7 ms 9684 KB Output is correct
18 Correct 7 ms 9684 KB Output is correct
19 Correct 5 ms 9684 KB Output is correct
20 Correct 7 ms 9684 KB Output is correct
21 Correct 7 ms 9684 KB Output is correct
22 Correct 8 ms 9660 KB Output is correct
23 Correct 7 ms 9684 KB Output is correct
24 Correct 6 ms 9684 KB Output is correct
25 Correct 9 ms 9684 KB Output is correct
26 Correct 8 ms 9684 KB Output is correct
27 Correct 8 ms 9684 KB Output is correct
28 Correct 7 ms 9684 KB Output is correct

Subtask #4
28.0 / 28.0

# 결과 실행 시간 메모리 Grader output
1 Correct 7 ms 9684 KB Output is correct
2 Correct 6 ms 9684 KB Output is correct
3 Correct 10 ms 9684 KB Output is correct
4 Correct 7 ms 9684 KB Output is correct
5 Correct 8 ms 9684 KB Output is correct
6 Correct 7 ms 9684 KB Output is correct
7 Correct 7 ms 9684 KB Output is correct
8 Correct 7 ms 9684 KB Output is correct
9 Correct 6 ms 9684 KB Output is correct
10 Correct 7 ms 9684 KB Output is correct
11 Correct 7 ms 9684 KB Output is correct
12 Correct 8 ms 9724 KB Output is correct
13 Correct 6 ms 9756 KB Output is correct
14 Correct 6 ms 9616 KB Output is correct
15 Correct 6 ms 9684 KB Output is correct
16 Correct 8 ms 9740 KB Output is correct
17 Correct 7 ms 9684 KB Output is correct
18 Correct 7 ms 9684 KB Output is correct
19 Correct 5 ms 9684 KB Output is correct
20 Correct 7 ms 9684 KB Output is correct
21 Correct 7 ms 9684 KB Output is correct
22 Correct 8 ms 9660 KB Output is correct
23 Correct 7 ms 9684 KB Output is correct
24 Correct 6 ms 9684 KB Output is correct
25 Correct 9 ms 9684 KB Output is correct
26 Correct 8 ms 9684 KB Output is correct
27 Correct 8 ms 9684 KB Output is correct
28 Correct 7 ms 9684 KB Output is correct
29 Correct 27 ms 9820 KB Output is correct
30 Correct 38 ms 9684 KB Output is correct
31 Correct 25 ms 9720 KB Output is correct
32 Correct 17 ms 9712 KB Output is correct
33 Correct 8 ms 9684 KB Output is correct
34 Correct 82 ms 9788 KB Output is correct
35 Correct 107 ms 9968 KB Output is correct
36 Correct 63 ms 9888 KB Output is correct
37 Correct 32 ms 9904 KB Output is correct

Subtask #5
12.0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 7 ms 9684 KB Output is correct
2 Correct 6 ms 9684 KB Output is correct
3 Correct 10 ms 9684 KB Output is correct
4 Correct 7 ms 9684 KB Output is correct
5 Correct 8 ms 9684 KB Output is correct
6 Correct 7 ms 9684 KB Output is correct
7 Correct 7 ms 9684 KB Output is correct
8 Correct 7 ms 9684 KB Output is correct
9 Correct 6 ms 9684 KB Output is correct
10 Correct 7 ms 9684 KB Output is correct
11 Correct 7 ms 9684 KB Output is correct
12 Correct 8 ms 9724 KB Output is correct
13 Correct 6 ms 9756 KB Output is correct
14 Correct 6 ms 9616 KB Output is correct
15 Correct 6 ms 9684 KB Output is correct
16 Correct 8 ms 9740 KB Output is correct
17 Correct 7 ms 9684 KB Output is correct
18 Correct 7 ms 9684 KB Output is correct
19 Correct 5 ms 9684 KB Output is correct
20 Correct 7 ms 9684 KB Output is correct
21 Correct 7 ms 9684 KB Output is correct
22 Correct 8 ms 9660 KB Output is correct
23 Correct 7 ms 9684 KB Output is correct
24 Correct 6 ms 9684 KB Output is correct
25 Correct 9 ms 9684 KB Output is correct
26 Correct 8 ms 9684 KB Output is correct
27 Correct 8 ms 9684 KB Output is correct
28 Correct 7 ms 9684 KB Output is correct
29 Correct 27 ms 9820 KB Output is correct
30 Correct 38 ms 9684 KB Output is correct
31 Correct 25 ms 9720 KB Output is correct
32 Correct 17 ms 9712 KB Output is correct
33 Correct 8 ms 9684 KB Output is correct
34 Correct 82 ms 9788 KB Output is correct
35 Correct 107 ms 9968 KB Output is correct
36 Correct 63 ms 9888 KB Output is correct
37 Correct 32 ms 9904 KB Output is correct
38 Correct 594 ms 13860 KB Output is correct
39 Correct 150 ms 32748 KB Output is correct
40 Correct 1518 ms 12872 KB Output is correct
41 Correct 1833 ms 11820 KB Output is correct
42 Correct 1919 ms 12988 KB Output is correct
43 Correct 66 ms 11688 KB Output is correct
44 Correct 1736 ms 10264 KB Output is correct
45 Correct 254 ms 25660 KB Output is correct
46 Correct 226 ms 25864 KB Output is correct
47 Correct 187 ms 28464 KB Output is correct
48 Correct 186 ms 28516 KB Output is correct
49 Correct 185 ms 25856 KB Output is correct
50 Correct 243 ms 25844 KB Output is correct
51 Correct 104 ms 26592 KB Output is correct
52 Correct 104 ms 26540 KB Output is correct
53 Correct 1465 ms 11008 KB Output is correct
54 Correct 215 ms 25772 KB Output is correct

Subtask #6
0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Correct 6 ms 9684 KB Output is correct
2 Correct 5 ms 9684 KB Output is correct
3 Correct 5 ms 9684 KB Output is correct
4 Correct 6 ms 9684 KB Output is correct
5 Correct 30 ms 9644 KB Output is correct
6 Correct 6 ms 9684 KB Output is correct
7 Correct 6 ms 9712 KB Output is correct
8 Correct 6 ms 9684 KB Output is correct
9 Correct 6 ms 9684 KB Output is correct
10 Correct 6 ms 9684 KB Output is correct
11 Correct 6 ms 9684 KB Output is correct
12 Correct 65 ms 9788 KB Output is correct
13 Correct 716 ms 10308 KB Output is correct
14 Correct 355 ms 10476 KB Output is correct
15 Correct 593 ms 10372 KB Output is correct
16 Execution timed out 5057 ms 26168 KB Time limit exceeded
17 Halted 0 ms 0 KB -

Subtask #7
0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Correct 7 ms 9684 KB Output is correct
2 Correct 5 ms 9684 KB Output is correct
3 Correct 5 ms 9684 KB Output is correct
4 Correct 36 ms 9624 KB Output is correct
5 Correct 50 ms 9700 KB Output is correct
6 Correct 8 ms 9684 KB Output is correct
7 Correct 7 ms 9684 KB Output is correct
8 Correct 27 ms 9804 KB Output is correct
9 Correct 616 ms 13896 KB Output is correct
10 Correct 160 ms 32548 KB Output is correct
11 Correct 26 ms 9840 KB Output is correct
12 Correct 382 ms 10868 KB Output is correct
13 Execution timed out 5047 ms 35832 KB Time limit exceeded
14 Halted 0 ms 0 KB -