oj.uz

Submission #994194

# Submission time Handle Problem Language Result Execution time Memory
994194 2024-06-07T08:36:12 Z UVince Jail (JOI22_jail) C++17
49 / 100
 5000 ms 257312 KB 
#include <bits/stdc++.h>
using namespace std;
using ll=long long;

void solve();

int main(){
    ios_base::sync_with_stdio(0);cin.tie(0);

    int t=1;
    cin>>t;
    while (t--) solve();
    return 0;
}

const int maxn = 120'000;


vector<vector<int>> g(maxn);
vector<int> num(maxn);
int n,m;
vector<int> s(maxn),t(maxn);
vector<vector<int>> path(maxn);
vector<bool> has(maxn,false);

bool dfs (int v, int start, int par=-1){
    bool ret=false;
    if (v==t[start]) return true;
    for (int to : g[v]){
        if (to==par) continue;
        ret = ret || dfs(to, start, v);
        if (ret){
            num[to]++;
            path[start].push_back(to);
            break;
        }
    }
    return ret;
}

void solve(){
    cin>>n;
    path.assign(maxn, {});
    num.assign(maxn,0);
    has.assign(maxn,false);
    g.assign(maxn,{});
    queue<int> q;
    for (int i = 1; i < n; i++)
    {
        int a,b;
        cin>>a>>b;
        g[a].push_back(b);
        g[b].push_back(a);
    }
    cin>>m;
    for (int i = 1; i <= m; i++)
    {
        cin>>s[i]>>t[i];
        dfs(s[i], i);
        num[s[i]]++;
        q.push(i);
        has[s[i]]=true;
    }
    bool change=true;
    while (change){
        change=false;
        int sz=q.size();
        for (int i=0;i<sz;i++){
            int cur=q.front();
            q.pop();
            bool rem=num[t[cur]]-1;

            for (int j : path[cur]){
                if (has[j]) rem=true;
            }
            if (rem) {
                q.push(cur);
                continue;
            }
            change=true;
            has[s[cur]]=false;
            num[s[cur]]--;
            for (int j : path[cur]){
                num[j]--;
            }
        }
    }
    if (q.empty()){
        cout<<"Yes\n";
    }
    else {
        cout<<"No\n";
    }
}

Subtask #1
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 7516 KB Output is correct
2 Correct 6 ms 7516 KB Output is correct
3 Correct 3 ms 7516 KB Output is correct
4 Correct 349 ms 7516 KB Output is correct
5 Correct 803 ms 7512 KB Output is correct
6 Correct 18 ms 7512 KB Output is correct
7 Correct 17 ms 7516 KB Output is correct
8 Correct 21 ms 7680 KB Output is correct
9 Correct 759 ms 23280 KB Output is correct
10 Incorrect 1381 ms 257312 KB Output isn't correct
11 Halted 0 ms 0 KB -

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 7516 KB Output is correct
2 Correct 3 ms 7516 KB Output is correct
3 Correct 17 ms 7572 KB Output is correct
4 Correct 17 ms 7512 KB Output is correct
5 Correct 19 ms 7516 KB Output is correct
6 Correct 20 ms 7512 KB Output is correct
7 Correct 22 ms 7516 KB Output is correct
8 Correct 18 ms 7516 KB Output is correct
9 Correct 19 ms 7516 KB Output is correct
10 Correct 19 ms 7556 KB Output is correct
11 Correct 16 ms 7512 KB Output is correct
12 Correct 22 ms 7556 KB Output is correct
13 Correct 17 ms 7512 KB Output is correct

Subtask #3
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 7516 KB Output is correct
2 Correct 3 ms 7516 KB Output is correct
3 Correct 17 ms 7572 KB Output is correct
4 Correct 17 ms 7512 KB Output is correct
5 Correct 19 ms 7516 KB Output is correct
6 Correct 20 ms 7512 KB Output is correct
7 Correct 22 ms 7516 KB Output is correct
8 Correct 18 ms 7516 KB Output is correct
9 Correct 19 ms 7516 KB Output is correct
10 Correct 19 ms 7556 KB Output is correct
11 Correct 16 ms 7512 KB Output is correct
12 Correct 22 ms 7556 KB Output is correct
13 Correct 17 ms 7512 KB Output is correct
14 Correct 4 ms 7512 KB Output is correct
15 Correct 6 ms 7516 KB Output is correct
16 Correct 19 ms 7580 KB Output is correct
17 Correct 17 ms 7516 KB Output is correct
18 Correct 19 ms 7516 KB Output is correct
19 Correct 17 ms 7540 KB Output is correct
20 Correct 18 ms 7560 KB Output is correct
21 Correct 18 ms 7516 KB Output is correct
22 Correct 18 ms 7516 KB Output is correct
23 Correct 16 ms 7516 KB Output is correct
24 Correct 17 ms 7516 KB Output is correct
25 Correct 19 ms 7560 KB Output is correct
26 Correct 17 ms 7516 KB Output is correct
27 Correct 17 ms 7512 KB Output is correct
28 Correct 18 ms 7540 KB Output is correct

Subtask #4
28.0 / 28.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 7516 KB Output is correct
2 Correct 3 ms 7516 KB Output is correct
3 Correct 17 ms 7572 KB Output is correct
4 Correct 17 ms 7512 KB Output is correct
5 Correct 19 ms 7516 KB Output is correct
6 Correct 20 ms 7512 KB Output is correct
7 Correct 22 ms 7516 KB Output is correct
8 Correct 18 ms 7516 KB Output is correct
9 Correct 19 ms 7516 KB Output is correct
10 Correct 19 ms 7556 KB Output is correct
11 Correct 16 ms 7512 KB Output is correct
12 Correct 22 ms 7556 KB Output is correct
13 Correct 17 ms 7512 KB Output is correct
14 Correct 4 ms 7512 KB Output is correct
15 Correct 6 ms 7516 KB Output is correct
16 Correct 19 ms 7580 KB Output is correct
17 Correct 17 ms 7516 KB Output is correct
18 Correct 19 ms 7516 KB Output is correct
19 Correct 17 ms 7540 KB Output is correct
20 Correct 18 ms 7560 KB Output is correct
21 Correct 18 ms 7516 KB Output is correct
22 Correct 18 ms 7516 KB Output is correct
23 Correct 16 ms 7516 KB Output is correct
24 Correct 17 ms 7516 KB Output is correct
25 Correct 19 ms 7560 KB Output is correct
26 Correct 17 ms 7516 KB Output is correct
27 Correct 17 ms 7512 KB Output is correct
28 Correct 18 ms 7540 KB Output is correct
29 Correct 21 ms 7512 KB Output is correct
30 Correct 19 ms 7512 KB Output is correct
31 Correct 24 ms 7772 KB Output is correct
32 Correct 19 ms 7516 KB Output is correct
33 Correct 19 ms 7552 KB Output is correct
34 Correct 18 ms 7516 KB Output is correct
35 Correct 20 ms 7520 KB Output is correct
36 Correct 19 ms 7516 KB Output is correct
37 Correct 19 ms 7564 KB Output is correct

Subtask #5
0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 7516 KB Output is correct
2 Correct 3 ms 7516 KB Output is correct
3 Correct 17 ms 7572 KB Output is correct
4 Correct 17 ms 7512 KB Output is correct
5 Correct 19 ms 7516 KB Output is correct
6 Correct 20 ms 7512 KB Output is correct
7 Correct 22 ms 7516 KB Output is correct
8 Correct 18 ms 7516 KB Output is correct
9 Correct 19 ms 7516 KB Output is correct
10 Correct 19 ms 7556 KB Output is correct
11 Correct 16 ms 7512 KB Output is correct
12 Correct 22 ms 7556 KB Output is correct
13 Correct 17 ms 7512 KB Output is correct
14 Correct 4 ms 7512 KB Output is correct
15 Correct 6 ms 7516 KB Output is correct
16 Correct 19 ms 7580 KB Output is correct
17 Correct 17 ms 7516 KB Output is correct
18 Correct 19 ms 7516 KB Output is correct
19 Correct 17 ms 7540 KB Output is correct
20 Correct 18 ms 7560 KB Output is correct
21 Correct 18 ms 7516 KB Output is correct
22 Correct 18 ms 7516 KB Output is correct
23 Correct 16 ms 7516 KB Output is correct
24 Correct 17 ms 7516 KB Output is correct
25 Correct 19 ms 7560 KB Output is correct
26 Correct 17 ms 7516 KB Output is correct
27 Correct 17 ms 7512 KB Output is correct
28 Correct 18 ms 7540 KB Output is correct
29 Correct 21 ms 7512 KB Output is correct
30 Correct 19 ms 7512 KB Output is correct
31 Correct 24 ms 7772 KB Output is correct
32 Correct 19 ms 7516 KB Output is correct
33 Correct 19 ms 7552 KB Output is correct
34 Correct 18 ms 7516 KB Output is correct
35 Correct 20 ms 7520 KB Output is correct
36 Correct 19 ms 7516 KB Output is correct
37 Correct 19 ms 7564 KB Output is correct
38 Correct 763 ms 23596 KB Output is correct
39 Incorrect 1380 ms 257272 KB Output isn't correct
40 Halted 0 ms 0 KB -

Subtask #6
0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 7516 KB Output is correct
2 Correct 4 ms 7516 KB Output is correct
3 Correct 4 ms 7516 KB Output is correct
4 Correct 5 ms 7516 KB Output is correct
5 Correct 752 ms 7524 KB Output is correct
6 Correct 18 ms 7516 KB Output is correct
7 Correct 18 ms 7512 KB Output is correct
8 Correct 18 ms 7540 KB Output is correct
9 Correct 17 ms 7516 KB Output is correct
10 Correct 17 ms 7516 KB Output is correct
11 Correct 18 ms 7532 KB Output is correct
12 Correct 23 ms 7512 KB Output is correct
13 Correct 753 ms 7764 KB Output is correct
14 Correct 757 ms 7524 KB Output is correct
15 Correct 759 ms 7516 KB Output is correct
16 Execution timed out 5039 ms 11976 KB Time limit exceeded
17 Halted 0 ms 0 KB -

Subtask #7
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 7516 KB Output is correct
2 Correct 6 ms 7516 KB Output is correct
3 Correct 3 ms 7516 KB Output is correct
4 Correct 349 ms 7516 KB Output is correct
5 Correct 803 ms 7512 KB Output is correct
6 Correct 18 ms 7512 KB Output is correct
7 Correct 17 ms 7516 KB Output is correct
8 Correct 21 ms 7680 KB Output is correct
9 Correct 759 ms 23280 KB Output is correct
10 Incorrect 1381 ms 257312 KB Output isn't correct
11 Halted 0 ms 0 KB -