循环的题解

#include<bits/stdc++.h>
using namespace std;
int main(){
    int a,b,x,y;
    cin>>a>>b;
    for(int i=0;i<4;i++){
        cin>>x>>y;
        if(b/y*x>=a){
            cout<<"YES"<<endl;
            return 0;
        }
    }
    cout<<"NO"<<endl;
    return 0;
}