Submission #1346581

#	Time	Username	Problem	Language	Result	Execution time	Memory
1346581		nezuko2410	Curtains (NOI23_curtains)	C++20	0 / 100	1 ms	836 KiB

curtains

#include <bits/stdc++.h>
#define fi first
#define se second
using namespace std;

const int N=5e5+10;
int n,m,q,s[N],e[N],a[2005][2005],x,i,j;
vector<pair<int,int>>v;

int main() {
    cin>>n>>m>>q;
    v.resize(m);
    for (i=0; i<m; i++)
        cin>>v[i].fi>>v[i].se;
    sort(v.begin(),v.end());
    for (i=0; i<q; i++) {   
        cin>>s[i]>>e[i];
    }
    for (i=0; i<m; i++) {
        x=v[i].se;
        a[v[i].fi][x]=1;  
        for (j=i+1; j<m; j++) {   
            if (v[j].fi<=x+1) {
                x=max(x,v[j].se);   
                a[v[i].fi][x]=1;
            }
            else break;
        }
    }
    for (i=0; i<q; i++)
        if (a[s[i]][e[i]]==1)
            cout<<"YES\n";
        else
            cout<<"NO\n";
}

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