题解

#include<iostream>
#include<cstdio>
using namespace std;
int n,m,x,y;
int main(){
    cin>>n>>m;
    for(int i=1;i<=3;i++){
        cin>>x>>y;
        if(m/y*x>=n){
            cout<<"YES";
            return 0;
        }
    }
    cout<<"NO";
}