Submission #706532

#	Time	Username	Problem	Language	Result	Execution time	Memory
706532		pcc	Jail (JOI22_jail)	C++14	5 / 100	45 ms	4160 KiB

jail

#include <bits/stdc++.h>
using namespace std;

void solve(){
    int n;
    cin>>n;
    int a,b;
    for(int i = 0;i<n-1;i++)cin>>a>>b;
    int m;
    cin>>m;
    pair<int,int> arr[m];
    for(auto &i:arr)cin>>i.first>>i.second;
    sort(arr,arr+m);
    int maxR = 0,minL = 0;
    bool flag = true;
    for(auto &i:arr){
        if(i.first>i.second){
            if(minL>i.second)flag = false;
            if(maxR>i.second)flag = false;
            minL = max(minL,i.second);
        }
        else{
            if(maxR>i.second)flag = false;
            maxR = max(maxR,i.second);
        }
    }
    if(flag)cout<<"Yes\n";
    else cout<<"No\n";
    return;
}

int main(){
    ios::sync_with_stdio(0);cin.tie(0);cout.tie(0);
    int t;
    cin>>t;
    while(t--)solve();
}

• Subtask 1: 5 / 5
• Subtask 2: 0 / 5
• Subtask 3: 0 / 16
• Subtask 4: 0 / 28
• Subtask 5: 0 / 12
• Subtask 6: 0 / 11
• Subtask 7: 0 / 23