oj.uz

Submission #994189

# Submission time Handle Problem Language Result Execution time Memory
994189 2024-06-07T08:32:05 Z vjudge1 Jail (JOI22_jail) C++17
49 / 100
 5000 ms 258568 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 3 ms 7512 KB Output is correct
2 Correct 5 ms 7364 KB Output is correct
3 Correct 4 ms 7516 KB Output is correct
4 Correct 356 ms 7820 KB Output is correct
5 Correct 748 ms 8272 KB Output is correct
6 Correct 20 ms 7512 KB Output is correct
7 Correct 18 ms 7516 KB Output is correct
8 Correct 21 ms 7632 KB Output is correct
9 Correct 763 ms 24404 KB Output is correct
10 Incorrect 1430 ms 258568 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 6 ms 7516 KB Output is correct
2 Correct 4 ms 7516 KB Output is correct
3 Correct 18 ms 7572 KB Output is correct
4 Correct 17 ms 7512 KB Output is correct
5 Correct 17 ms 7592 KB Output is correct
6 Correct 19 ms 7560 KB Output is correct
7 Correct 18 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 18 ms 7592 KB Output is correct
11 Correct 18 ms 7516 KB Output is correct
12 Correct 19 ms 7516 KB Output is correct
13 Correct 18 ms 7512 KB Output is correct

Subtask #3
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 7516 KB Output is correct
2 Correct 4 ms 7516 KB Output is correct
3 Correct 18 ms 7572 KB Output is correct
4 Correct 17 ms 7512 KB Output is correct
5 Correct 17 ms 7592 KB Output is correct
6 Correct 19 ms 7560 KB Output is correct
7 Correct 18 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 18 ms 7592 KB Output is correct
11 Correct 18 ms 7516 KB Output is correct
12 Correct 19 ms 7516 KB Output is correct
13 Correct 18 ms 7512 KB Output is correct
14 Correct 4 ms 7516 KB Output is correct
15 Correct 4 ms 7544 KB Output is correct
16 Correct 19 ms 7608 KB Output is correct
17 Correct 18 ms 7512 KB Output is correct
18 Correct 19 ms 7596 KB Output is correct
19 Correct 18 ms 7552 KB Output is correct
20 Correct 18 ms 7568 KB Output is correct
21 Correct 17 ms 7516 KB Output is correct
22 Correct 19 ms 7512 KB Output is correct
23 Correct 18 ms 7516 KB Output is correct
24 Correct 18 ms 7512 KB Output is correct
25 Correct 27 ms 7516 KB Output is correct
26 Correct 18 ms 7516 KB Output is correct
27 Correct 18 ms 7516 KB Output is correct
28 Correct 17 ms 7552 KB Output is correct

Subtask #4
28.0 / 28.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 7516 KB Output is correct
2 Correct 4 ms 7516 KB Output is correct
3 Correct 18 ms 7572 KB Output is correct
4 Correct 17 ms 7512 KB Output is correct
5 Correct 17 ms 7592 KB Output is correct
6 Correct 19 ms 7560 KB Output is correct
7 Correct 18 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 18 ms 7592 KB Output is correct
11 Correct 18 ms 7516 KB Output is correct
12 Correct 19 ms 7516 KB Output is correct
13 Correct 18 ms 7512 KB Output is correct
14 Correct 4 ms 7516 KB Output is correct
15 Correct 4 ms 7544 KB Output is correct
16 Correct 19 ms 7608 KB Output is correct
17 Correct 18 ms 7512 KB Output is correct
18 Correct 19 ms 7596 KB Output is correct
19 Correct 18 ms 7552 KB Output is correct
20 Correct 18 ms 7568 KB Output is correct
21 Correct 17 ms 7516 KB Output is correct
22 Correct 19 ms 7512 KB Output is correct
23 Correct 18 ms 7516 KB Output is correct
24 Correct 18 ms 7512 KB Output is correct
25 Correct 27 ms 7516 KB Output is correct
26 Correct 18 ms 7516 KB Output is correct
27 Correct 18 ms 7516 KB Output is correct
28 Correct 17 ms 7552 KB Output is correct
29 Correct 21 ms 7516 KB Output is correct
30 Correct 20 ms 7516 KB Output is correct
31 Correct 21 ms 7612 KB Output is correct
32 Correct 19 ms 7516 KB Output is correct
33 Correct 19 ms 7512 KB Output is correct
34 Correct 20 ms 7512 KB Output is correct
35 Correct 19 ms 7516 KB Output is correct
36 Correct 19 ms 7600 KB Output is correct
37 Correct 19 ms 7512 KB Output is correct

Subtask #5
0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 7516 KB Output is correct
2 Correct 4 ms 7516 KB Output is correct
3 Correct 18 ms 7572 KB Output is correct
4 Correct 17 ms 7512 KB Output is correct
5 Correct 17 ms 7592 KB Output is correct
6 Correct 19 ms 7560 KB Output is correct
7 Correct 18 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 18 ms 7592 KB Output is correct
11 Correct 18 ms 7516 KB Output is correct
12 Correct 19 ms 7516 KB Output is correct
13 Correct 18 ms 7512 KB Output is correct
14 Correct 4 ms 7516 KB Output is correct
15 Correct 4 ms 7544 KB Output is correct
16 Correct 19 ms 7608 KB Output is correct
17 Correct 18 ms 7512 KB Output is correct
18 Correct 19 ms 7596 KB Output is correct
19 Correct 18 ms 7552 KB Output is correct
20 Correct 18 ms 7568 KB Output is correct
21 Correct 17 ms 7516 KB Output is correct
22 Correct 19 ms 7512 KB Output is correct
23 Correct 18 ms 7516 KB Output is correct
24 Correct 18 ms 7512 KB Output is correct
25 Correct 27 ms 7516 KB Output is correct
26 Correct 18 ms 7516 KB Output is correct
27 Correct 18 ms 7516 KB Output is correct
28 Correct 17 ms 7552 KB Output is correct
29 Correct 21 ms 7516 KB Output is correct
30 Correct 20 ms 7516 KB Output is correct
31 Correct 21 ms 7612 KB Output is correct
32 Correct 19 ms 7516 KB Output is correct
33 Correct 19 ms 7512 KB Output is correct
34 Correct 20 ms 7512 KB Output is correct
35 Correct 19 ms 7516 KB Output is correct
36 Correct 19 ms 7600 KB Output is correct
37 Correct 19 ms 7512 KB Output is correct
38 Correct 748 ms 24392 KB Output is correct
39 Incorrect 1408 ms 258540 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 5 ms 7512 KB Output is correct
4 Correct 4 ms 7516 KB Output is correct
5 Correct 731 ms 7524 KB Output is correct
6 Correct 20 ms 7512 KB Output is correct
7 Correct 20 ms 7516 KB Output is correct
8 Correct 19 ms 7544 KB Output is correct
9 Correct 19 ms 7512 KB Output is correct
10 Correct 17 ms 7516 KB Output is correct
11 Correct 19 ms 7516 KB Output is correct
12 Correct 19 ms 7516 KB Output is correct
13 Correct 753 ms 8064 KB Output is correct
14 Correct 753 ms 8276 KB Output is correct
15 Correct 802 ms 8020 KB Output is correct
16 Execution timed out 5059 ms 13376 KB Time limit exceeded
17 Halted 0 ms 0 KB -

Subtask #7
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 7512 KB Output is correct
2 Correct 5 ms 7364 KB Output is correct
3 Correct 4 ms 7516 KB Output is correct
4 Correct 356 ms 7820 KB Output is correct
5 Correct 748 ms 8272 KB Output is correct
6 Correct 20 ms 7512 KB Output is correct
7 Correct 18 ms 7516 KB Output is correct
8 Correct 21 ms 7632 KB Output is correct
9 Correct 763 ms 24404 KB Output is correct
10 Incorrect 1430 ms 258568 KB Output isn't correct
11 Halted 0 ms 0 KB -