oj.uz

Submission #994258

# Submission time Handle Problem Language Result Execution time Memory
994258 2024-06-07T10:01:06 Z vjudge1 Jail (JOI22_jail) C++17
61 / 100
 5000 ms 28804 KB 
#include <bits/stdc++.h>
using namespace std;

const int maxn = 120'001, mbit = 18;
int n, m;
int dth[maxn];
int S[maxn], T[maxn];
vector <vector <int> > G;
vector <int> w;
vector <vector <int> > g;
vector <vector <int> > stp;

void dfs_lca(int u = 1){
    for(int i = 1; i < mbit; i++){
        stp[u][i] = stp[stp[u][i - 1]][i - 1];
    }
    for(auto v : G[u]){
        if(v != stp[u][0]){
            stp[v][0] = u;
            dth[v] = dth[u] + 1;
            dfs_lca(v);
        }
    }
}

int LCA(int u, int v){
    if(dth[u] < dth[v]) swap(u, v);
    for(int i = mbit - 1; i >= 0; i--){
        if(dth[u] - dth[v] >= (1 << i)) u = stp[u][i];
    }
    if(u == v) return u;
    for(int i = mbit - 1; i >= 0; i--){
        if(stp[u][i] != stp[v][i]){
            u = stp[u][i];
            v = stp[v][i];
        }
    }
    return stp[u][0];
}

bool mid(int u, int v, int M){
    return ((LCA(u, M) == M) || (LCA(v, M) == M)) && (dth[M] >= dth[LCA(u, v)]);
}

bool dfs_loop(int u){
    if(w[u] == 1) return 1;
    if(w[u] == 2) return 0;
    w[u] = 1;
    for(auto v : g[u]){
        if(dfs_loop(v)) return 1;
    }
    w[u] = 2;
    return 0;
}

bool sol(){
    cin >> n;
    G.assign(n + 1, vector<int>());
    stp.assign(n + 1, vector<int>(mbit));
    for(int i = 1; i < n; i++){
        int u, v;
        cin >> u >> v;
        G[u].push_back(v);
        G[v].push_back(u);
    }
    dth[1] = 0;
    dfs_lca();
    //===============
    cin >> m;
    g.assign(m + 1, vector<int>());
    for(int i = 0; i < m; i++){
        cin >> S[i] >> T[i];
    }
    for(int i = 0; i < m; i++){
        for(int j = 0; j < m; j++){
            if(i == j) continue;
            if(mid(S[i], T[i], S[j])) g[i].push_back(j);
            if(mid(S[i], T[i], T[j])) g[j].push_back(i);
        }
    }
    w.assign(m + 1, 0);
    for(int i = 0; i < m; i++){
        if(dfs_loop(i)) return 0;
    }
    return 1;
}

int main(){
    int Q;
    ios::sync_with_stdio(0);
    cin.tie(0);
    cin >> Q;
    while(Q--){
        cout << (sol() ? "Yes\n" : "No\n");
    }
    return 0;
}

Subtask #1
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 8 ms 500 KB Output is correct
5 Correct 17 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 31 ms 536 KB Output is correct
9 Correct 1362 ms 3652 KB Output is correct
10 Correct 96 ms 28496 KB Output is correct
11 Correct 13 ms 348 KB Output is correct
12 Correct 416 ms 480 KB Output is correct
13 Execution timed out 5042 ms 28804 KB Time limit exceeded
14 Halted 0 ms 0 KB -

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 2 ms 348 KB Output is correct
9 Correct 1 ms 344 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 1 ms 348 KB Output is correct

Subtask #3
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 2 ms 348 KB Output is correct
9 Correct 1 ms 344 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 1 ms 348 KB Output is correct
17 Correct 1 ms 348 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 1 ms 348 KB Output is correct
21 Correct 1 ms 348 KB Output is correct
22 Correct 1 ms 348 KB Output is correct
23 Correct 1 ms 348 KB Output is correct
24 Correct 0 ms 348 KB Output is correct
25 Correct 2 ms 348 KB Output is correct
26 Correct 1 ms 344 KB Output is correct
27 Correct 1 ms 348 KB Output is correct
28 Correct 0 ms 348 KB Output is correct

Subtask #4
28.0 / 28.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 2 ms 348 KB Output is correct
9 Correct 1 ms 344 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 1 ms 348 KB Output is correct
17 Correct 1 ms 348 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 1 ms 348 KB Output is correct
21 Correct 1 ms 348 KB Output is correct
22 Correct 1 ms 348 KB Output is correct
23 Correct 1 ms 348 KB Output is correct
24 Correct 0 ms 348 KB Output is correct
25 Correct 2 ms 348 KB Output is correct
26 Correct 1 ms 344 KB Output is correct
27 Correct 1 ms 348 KB Output is correct
28 Correct 0 ms 348 KB Output is correct
29 Correct 32 ms 596 KB Output is correct
30 Correct 18 ms 348 KB Output is correct
31 Correct 21 ms 344 KB Output is correct
32 Correct 12 ms 344 KB Output is correct
33 Correct 3 ms 348 KB Output is correct
34 Correct 30 ms 520 KB Output is correct
35 Correct 45 ms 580 KB Output is correct
36 Correct 25 ms 348 KB Output is correct
37 Correct 21 ms 344 KB Output is correct

Subtask #5
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 2 ms 348 KB Output is correct
9 Correct 1 ms 344 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 1 ms 348 KB Output is correct
17 Correct 1 ms 348 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 1 ms 348 KB Output is correct
21 Correct 1 ms 348 KB Output is correct
22 Correct 1 ms 348 KB Output is correct
23 Correct 1 ms 348 KB Output is correct
24 Correct 0 ms 348 KB Output is correct
25 Correct 2 ms 348 KB Output is correct
26 Correct 1 ms 344 KB Output is correct
27 Correct 1 ms 348 KB Output is correct
28 Correct 0 ms 348 KB Output is correct
29 Correct 32 ms 596 KB Output is correct
30 Correct 18 ms 348 KB Output is correct
31 Correct 21 ms 344 KB Output is correct
32 Correct 12 ms 344 KB Output is correct
33 Correct 3 ms 348 KB Output is correct
34 Correct 30 ms 520 KB Output is correct
35 Correct 45 ms 580 KB Output is correct
36 Correct 25 ms 348 KB Output is correct
37 Correct 21 ms 344 KB Output is correct
38 Correct 1338 ms 3660 KB Output is correct
39 Correct 93 ms 28500 KB Output is correct
40 Correct 1527 ms 2640 KB Output is correct
41 Correct 1028 ms 1368 KB Output is correct
42 Correct 923 ms 2748 KB Output is correct
43 Correct 37 ms 1612 KB Output is correct
44 Correct 697 ms 604 KB Output is correct
45 Correct 206 ms 19780 KB Output is correct
46 Correct 215 ms 19756 KB Output is correct
47 Correct 278 ms 23380 KB Output is correct
48 Correct 274 ms 23444 KB Output is correct
49 Correct 251 ms 19796 KB Output is correct
50 Correct 253 ms 19904 KB Output is correct
51 Correct 73 ms 20920 KB Output is correct
52 Correct 73 ms 20828 KB Output is correct
53 Correct 595 ms 1872 KB Output is correct
54 Correct 145 ms 19676 KB Output is correct

Subtask #6
0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 13 ms 476 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 25 ms 348 KB Output is correct
13 Correct 340 ms 348 KB Output is correct
14 Correct 171 ms 344 KB Output is correct
15 Correct 250 ms 348 KB Output is correct
16 Execution timed out 5011 ms 20264 KB Time limit exceeded
17 Halted 0 ms 0 KB -

Subtask #7
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 8 ms 500 KB Output is correct
5 Correct 17 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 31 ms 536 KB Output is correct
9 Correct 1362 ms 3652 KB Output is correct
10 Correct 96 ms 28496 KB Output is correct
11 Correct 13 ms 348 KB Output is correct
12 Correct 416 ms 480 KB Output is correct
13 Execution timed out 5042 ms 28804 KB Time limit exceeded
14 Halted 0 ms 0 KB -