oj.uz

Submission #632455

# Submission time Handle Problem Language Result Execution time Memory
632455 2022-08-20T05:27:30 Z Mahdi Jail (JOI22_jail) C++17
0 / 100
 0 ms 212 KB 
#include<bits/stdc++.h>
#pragma GCC optimize("Ofast")
using namespace std;
#define all(v) v.begin(), v.end()
#define F first
#define S second
typedef pair<int, int> pii;
typedef long long ll;
const int N=12e4+5;
int n, m, a[N];

void sol(){
    cin>>n;
    for(int i=1;i<n;++i){
        int u, v;
        cin>>u>>v;
    }
    priority_queue<pii>pq, qp;
    cin>>m;
    for(int i=0;i<m;++i){
        int u, v;
        cin>>u>>v;
        if(u<v)
            pq.push({-u+1, v});
        else
            qp.push({-v+1, u});
    }
    memset(a, -1, 4*n);
    int r1=0, r2=0;
    for(int i=0;i<n;++i){
        while(!pq.empty() && -pq.top().F<=i){
            r1=max(r1, pq.top().S);
            pq.pop();
        }
        while(!qp.empty() && -qp.top().F<=i){
            r2=max(r2, qp.top().S);
            qp.pop();
        }
        if(r1>i)
            a[i]=0;
        if(r2>i){
            if(a[i]==0){
                cout<<"NO\n";
                return;
            }
            a[i]=1;
        }
    }
    cout<<"YES\n";
}

int main(){
    ios_base::sync_with_stdio(0); cin.tie(0);
    int T;
    cin>>T;
    while(T--)
        sol();
}

Subtask #1
0 / 5.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 212 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
0 / 5.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 212 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0 / 16.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 212 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 28.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 212 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
0 / 12.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 212 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #6
0 / 11.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 212 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #7
0 / 23.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 212 KB Output isn't correct
2 Halted 0 ms 0 KB -