Submission #1112936

#	Time	Username	Problem	Language	Result	Execution time	Memory
1112936		Aviansh	Curtains (NOI23_curtains)	C++17	9 / 100	1574 ms	102120 KiB

curtains

#include <bits/stdc++.h>

using namespace std;

signed main(){
    ios::sync_with_stdio(0);
    cin.tie(0);
    int n,m,q;
    cin >> n >> m >> q;
    vector<array<int,2>>events[n+1];
    for(int i = 0;i<m;i++){
        int a,b;
        cin >> a >> b;
        events[a].push_back({a,b});
        events[b].push_back({a,b});
    }
    bool ans[n+5][n+5];
    for(int a = 1;a<=n;a++){
        int b=n;
        int minima = a;
        priority_queue<int,vector<int>,greater<int>>mins;
        bool work = 1;
        for(int i = a;i<=b;i++){
            for(array<int,2>a:events[i]){
                if(a[0]==i)
                    mins.push(a[1]);
            }
            if(mins.size())
                minima=max(minima,mins.top());
            if(mins.size()==0){
                work=0;
            }
            if(minima==i&&work){
                ans[a][i]=1;
            }
            else{
                ans[a][i]=0;
            }
            while(mins.size()&&mins.top()==i){
                mins.pop();
            }
        }
    }
    while(q--){
        int a,b;
        cin >> a >> b;
        cout << (ans[a][b] ? "YES\n" : "NO\n");
    }
    return 0;
}

• Subtask 1: 3 / 3
• Subtask 2: 6 / 6
• Subtask 3: 0 / 15
• Subtask 4: 0 / 20
• Subtask 5: 0 / 36
• Subtask 6: 0 / 20