Submission #1206367

#	Time	Username	Problem	Language	Result	Execution time	Memory
1206367		LM1	Curtains (NOI23_curtains)	C++20	0 / 100	1 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;
		bool ok=0,ok1=1,ok2=0;
		fr(i,1,m+1){
			if(p[i].ss==y)ok2=1;
			if(p[i].ff==x){
				ok=1;
				continue;
			}
			if(ok==1){
				if(p[i].ff<=p[i-1].ss+1);
				else ok1=0;
			}
		}
		if(ok==1 and ok1==1 and ok2==1)cout<<"YES\n";
		else cout<<"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