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답안 #994337

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
994337 2024-06-07T11:51:16 Z Albertstein Jail (JOI22_jail) C++17
61 / 100
 5000 ms 28756 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

# 결과 실행 시간 메모리 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 8 ms 348 KB Output is correct
5 Correct 17 ms 504 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 592 KB Output is correct
9 Correct 1402 ms 3664 KB Output is correct
10 Correct 92 ms 28680 KB Output is correct
11 Correct 13 ms 348 KB Output is correct
12 Correct 416 ms 496 KB Output is correct
13 Execution timed out 5032 ms 28756 KB Time limit exceeded
14 Halted 0 ms 0 KB -

Subtask #2
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 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 1 ms 344 KB Output is correct
9 Correct 1 ms 520 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 396 KB Output is correct
13 Correct 1 ms 344 KB Output is correct

Subtask #3
16.0 / 16.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 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 1 ms 344 KB Output is correct
9 Correct 1 ms 520 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 396 KB Output is correct
13 Correct 1 ms 344 KB Output is correct
14 Correct 1 ms 344 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 2 ms 348 KB Output is correct
17 Correct 1 ms 344 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 1 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 0 ms 348 KB Output is correct
24 Correct 0 ms 348 KB Output is correct
25 Correct 1 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

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 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 1 ms 344 KB Output is correct
9 Correct 1 ms 520 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 396 KB Output is correct
13 Correct 1 ms 344 KB Output is correct
14 Correct 1 ms 344 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 2 ms 348 KB Output is correct
17 Correct 1 ms 344 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 1 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 0 ms 348 KB Output is correct
24 Correct 0 ms 348 KB Output is correct
25 Correct 1 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 31 ms 596 KB Output is correct
30 Correct 18 ms 348 KB Output is correct
31 Correct 21 ms 348 KB Output is correct
32 Correct 12 ms 532 KB Output is correct
33 Correct 3 ms 348 KB Output is correct
34 Correct 30 ms 528 KB Output is correct
35 Correct 45 ms 348 KB Output is correct
36 Correct 25 ms 516 KB Output is correct
37 Correct 25 ms 344 KB Output is correct

Subtask #5
12.0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 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 1 ms 344 KB Output is correct
9 Correct 1 ms 520 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 396 KB Output is correct
13 Correct 1 ms 344 KB Output is correct
14 Correct 1 ms 344 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 2 ms 348 KB Output is correct
17 Correct 1 ms 344 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 1 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 0 ms 348 KB Output is correct
24 Correct 0 ms 348 KB Output is correct
25 Correct 1 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 31 ms 596 KB Output is correct
30 Correct 18 ms 348 KB Output is correct
31 Correct 21 ms 348 KB Output is correct
32 Correct 12 ms 532 KB Output is correct
33 Correct 3 ms 348 KB Output is correct
34 Correct 30 ms 528 KB Output is correct
35 Correct 45 ms 348 KB Output is correct
36 Correct 25 ms 516 KB Output is correct
37 Correct 25 ms 344 KB Output is correct
38 Correct 1365 ms 3664 KB Output is correct
39 Correct 93 ms 28568 KB Output is correct
40 Correct 1530 ms 2644 KB Output is correct
41 Correct 1038 ms 1372 KB Output is correct
42 Correct 967 ms 2900 KB Output is correct
43 Correct 37 ms 1372 KB Output is correct
44 Correct 740 ms 604 KB Output is correct
45 Correct 201 ms 19792 KB Output is correct
46 Correct 186 ms 19540 KB Output is correct
47 Correct 280 ms 23392 KB Output is correct
48 Correct 279 ms 23376 KB Output is correct
49 Correct 240 ms 19796 KB Output is correct
50 Correct 230 ms 20184 KB Output is correct
51 Correct 73 ms 20820 KB Output is correct
52 Correct 74 ms 20916 KB Output is correct
53 Correct 599 ms 1864 KB Output is correct
54 Correct 142 ms 19536 KB Output is correct

Subtask #6
0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 1 ms 344 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 15 ms 492 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 1 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 344 KB Output is correct
12 Correct 25 ms 520 KB Output is correct
13 Correct 356 ms 348 KB Output is correct
14 Correct 170 ms 348 KB Output is correct
15 Correct 275 ms 348 KB Output is correct
16 Execution timed out 5071 ms 20308 KB Time limit exceeded
17 Halted 0 ms 0 KB -

Subtask #7
0 / 23.0

# 결과 실행 시간 메모리 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 8 ms 348 KB Output is correct
5 Correct 17 ms 504 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 592 KB Output is correct
9 Correct 1402 ms 3664 KB Output is correct
10 Correct 92 ms 28680 KB Output is correct
11 Correct 13 ms 348 KB Output is correct
12 Correct 416 ms 496 KB Output is correct
13 Execution timed out 5032 ms 28756 KB Time limit exceeded
14 Halted 0 ms 0 KB -