oj.uz

답안 #546328

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
546328 2022-04-07T09:36:04 Z Jarif_Rahman Jail (JOI22_jail) C++17
72 / 100
 5000 ms 711636 KB 
#include <bits/stdc++.h>
#define pb push_back
#define f first
#define sc second
using namespace std;
typedef long long int ll;
typedef string str;
 
int n, m;
vector<vector<int>> v;
vector<int> s, t;
vector<vector<int>> sth;
vector<int> state;
vector<int> p;
vector<int> d;
bool cycle;
 
void dfs1(int nd, int ss, int dis){
    for(int x: v[nd]) if(x != ss) dfs1(x, nd, dis+1);
    p[nd] = ss;
    d[nd] = dis;
}
 
void dfs2(int nd){
    if(state[nd] == 1){
        cycle = 1;
        return;
    }
    if(state[nd] == 2) return;
    state[nd] = 1;
    for(int x: sth[nd]) dfs2(x);
    state[nd] = 2;
}
 
void solve(){
    cin >> n;
    v.assign(n, {});
    p.assign(n, 0);
    d.assign(n, 0);
    sth.assign(n, {});
    state.assign(n, 0);
    for(int i = 0; i < n-1; i++){
        int a, b; cin >> a >> b; a--, b--;
        v[a].pb(b);
        v[b].pb(a);
    }
 
    dfs1(0, -1, 0);
 
    cin >> m;
    s.assign(m, 0);
    t.assign(m, 0);
    for(int i = 0; i < m; i++) cin >> s[i] >> t[i], s[i]--, t[i]--;
 
    vector<int> ss(n, -1), tt(n, -1);
    for(int i = 0; i < m; i++) ss[s[i]] = i, tt[t[i]] = i;
 
    auto get_path = [&](int a, int b){
        vector<int> rt;
        if(d[a] > d[b]) swap(a, b);
        while(d[a] != d[b]) rt.pb(b), b = p[b];
        while(a != b) rt.pb(a), rt.pb(b), a = p[a], b = p[b];
        rt.pb(a);
        return rt;
    };
 
    for(int i = 0; i < m; i++){
        for(int x: get_path(s[i], t[i])){
            if(ss[x] != -1 && ss[x] != i) sth[i].pb(ss[x]);
            if(tt[x] != -1 && tt[x] != i) sth[tt[x]].pb(i);
        }
    }
 
    cycle = 0;
 
    for(int i = 0; i < n; i++) if(state[i] == 0) dfs2(i);
 
    cout << (cycle?"No\n":"Yes\n");
}
 
int main(){
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    int T; cin >> T; while(T--) solve();
}

Subtask #1
0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 9 ms 340 KB Output is correct
5 Correct 18 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 4 ms 340 KB Output is correct
9 Correct 143 ms 3248 KB Output is correct
10 Correct 574 ms 23896 KB Output is correct
11 Correct 6 ms 212 KB Output is correct
12 Correct 52 ms 424 KB Output is correct
13 Correct 191 ms 51596 KB Output is correct
14 Correct 222 ms 66056 KB Output is correct
15 Execution timed out 5050 ms 711636 KB Time limit exceeded
16 Halted 0 ms 0 KB -

Subtask #2
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 344 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct

Subtask #3
16.0 / 16.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 344 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 1 ms 212 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Correct 2 ms 340 KB Output is correct
22 Correct 1 ms 340 KB Output is correct
23 Correct 1 ms 212 KB Output is correct
24 Correct 0 ms 212 KB Output is correct
25 Correct 1 ms 340 KB Output is correct
26 Correct 1 ms 340 KB Output is correct
27 Correct 1 ms 340 KB Output is correct
28 Correct 1 ms 212 KB Output is correct

Subtask #4
28.0 / 28.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 344 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 1 ms 212 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Correct 2 ms 340 KB Output is correct
22 Correct 1 ms 340 KB Output is correct
23 Correct 1 ms 212 KB Output is correct
24 Correct 0 ms 212 KB Output is correct
25 Correct 1 ms 340 KB Output is correct
26 Correct 1 ms 340 KB Output is correct
27 Correct 1 ms 340 KB Output is correct
28 Correct 1 ms 212 KB Output is correct
29 Correct 4 ms 340 KB Output is correct
30 Correct 2 ms 340 KB Output is correct
31 Correct 3 ms 340 KB Output is correct
32 Correct 2 ms 340 KB Output is correct
33 Correct 1 ms 340 KB Output is correct
34 Correct 2 ms 340 KB Output is correct
35 Correct 3 ms 340 KB Output is correct
36 Correct 2 ms 340 KB Output is correct
37 Correct 1 ms 340 KB Output is correct

Subtask #5
12.0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 344 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 1 ms 212 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Correct 2 ms 340 KB Output is correct
22 Correct 1 ms 340 KB Output is correct
23 Correct 1 ms 212 KB Output is correct
24 Correct 0 ms 212 KB Output is correct
25 Correct 1 ms 340 KB Output is correct
26 Correct 1 ms 340 KB Output is correct
27 Correct 1 ms 340 KB Output is correct
28 Correct 1 ms 212 KB Output is correct
29 Correct 4 ms 340 KB Output is correct
30 Correct 2 ms 340 KB Output is correct
31 Correct 3 ms 340 KB Output is correct
32 Correct 2 ms 340 KB Output is correct
33 Correct 1 ms 340 KB Output is correct
34 Correct 2 ms 340 KB Output is correct
35 Correct 3 ms 340 KB Output is correct
36 Correct 2 ms 340 KB Output is correct
37 Correct 1 ms 340 KB Output is correct
38 Correct 137 ms 3456 KB Output is correct
39 Correct 571 ms 23940 KB Output is correct
40 Correct 74 ms 2336 KB Output is correct
41 Correct 28 ms 992 KB Output is correct
42 Correct 62 ms 2428 KB Output is correct
43 Correct 22 ms 1108 KB Output is correct
44 Correct 8 ms 628 KB Output is correct
45 Correct 49 ms 12176 KB Output is correct
46 Correct 45 ms 12092 KB Output is correct
47 Correct 111 ms 17236 KB Output is correct
48 Correct 126 ms 17304 KB Output is correct
49 Correct 55 ms 12316 KB Output is correct
50 Correct 51 ms 12236 KB Output is correct
51 Correct 39 ms 13568 KB Output is correct
52 Correct 37 ms 13616 KB Output is correct
53 Correct 9 ms 1108 KB Output is correct
54 Correct 83 ms 12036 KB Output is correct

Subtask #6
11.0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 7 ms 212 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 2 ms 340 KB Output is correct
13 Correct 20 ms 344 KB Output is correct
14 Correct 28 ms 212 KB Output is correct
15 Correct 23 ms 340 KB Output is correct
16 Correct 53 ms 12484 KB Output is correct
17 Correct 141 ms 18724 KB Output is correct
18 Correct 369 ms 40384 KB Output is correct
19 Correct 56 ms 12624 KB Output is correct
20 Correct 68 ms 12684 KB Output is correct
21 Correct 57 ms 12588 KB Output is correct
22 Correct 121 ms 18776 KB Output is correct
23 Correct 88 ms 18960 KB Output is correct
24 Correct 90 ms 18800 KB Output is correct
25 Correct 99 ms 18992 KB Output is correct
26 Correct 104 ms 18848 KB Output is correct
27 Correct 120 ms 19944 KB Output is correct
28 Correct 110 ms 20948 KB Output is correct
29 Correct 104 ms 18952 KB Output is correct
30 Correct 78 ms 16296 KB Output is correct
31 Correct 74 ms 16416 KB Output is correct
32 Correct 73 ms 16000 KB Output is correct
33 Correct 78 ms 16460 KB Output is correct

Subtask #7
0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 9 ms 340 KB Output is correct
5 Correct 18 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 4 ms 340 KB Output is correct
9 Correct 143 ms 3248 KB Output is correct
10 Correct 574 ms 23896 KB Output is correct
11 Correct 6 ms 212 KB Output is correct
12 Correct 52 ms 424 KB Output is correct
13 Correct 191 ms 51596 KB Output is correct
14 Correct 222 ms 66056 KB Output is correct
15 Execution timed out 5050 ms 711636 KB Time limit exceeded
16 Halted 0 ms 0 KB -