TIJIE

#include <iostream>
using namespace std;
int main()
{
    int a,b,x1,y1,x2,y2,x3,y3;
    cin>>a>>b;
    cin>>x1>>y1;
    cin>>x2>>y2;
    cin>>x3>>y3;
    if((b/y1)*x1>=a) cout<<"YES";
    else if((b/y2)*x2>=a) cout<<"YES";
    else if((b/y3)*x3>=a) cout<<"YES";
    else cout<<"NO";
}