Submission #1206360

#	Time	Username	Problem	Language	Result	Execution time	Memory
1206360		LM1	Curtains (NOI23_curtains)	C++20	0 / 100	0 ms	328 KiB

curtains

#include<bits/stdc++.h>
using namespace std;
#define ll long long
#define pii pair<int,int>
#define ff first
#define ss second
#define pb push_back
#define vi vector<int>
#define fr(i,ii,iii) for(int i=ii;i<iii;i++)
const int N=2002;
int n,m,q;
pii p[N];
int f[N];
int main(){
	ios_base::sync_with_stdio(NULL);cin.tie(NULL);
	cin>>n>>m>>q;
	fr(i,1,m+1)cin>>p[i].ff>>p[i].ss;
	sort(p+1,p+m+1);
	fr(i,0,q){
		int x,y;cin>>x>>y;
		int l=0;
		fr(i,1,m+1){
			if(p[i].ff>=x){
				l=p[i].ff;
				break;
			}
		}
		if(l>x){
			cout<<"NO\n";
			continue;
		}
		fr(i,1,m+1){
			if(p[i].ff-1<=l and p[i].ss>=l)l=p[i].ss;
			if(l>=y)break;
		}
		cout<<(l==y?"YES":"NO")<<"\n";
	}
}
/*
6 2 1
1 2
3 4
1 4

l=0,1,2,4
*/

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