题解

#include<iostream>
using namespace std;
int main(){
	int a,b,x,y;
    cin>>a>>b;
    for(int i=0;i<3;i++){
        x=0;
        y=0;
        cin>>x>>y;
        if(b/y*x>=a){
            cout<<"YES";
            return 0;
        }
    }   
    cout<<"NO";
	return 0;
}