#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});
}
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;
fill(ans[i],ans[i]+n+5,0);
for(int i = a;i<=b;i++){
for(array<int,2>a:events[i]){
mins.push(a[1]);
}
if(mins.size())
minima=max(minima,mins.top());
if(mins.size()==0){
work=0;
break;
}
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;
}
Compilation message
curtains.cpp: In function 'int main()':
curtains.cpp:22:18: error: 'i' was not declared in this scope
22 | fill(ans[i],ans[i]+n+5,0);
| ^
