CPZT ACGO

#include<iostream>
using namespace std;
int main(){
    int a,b,x1,x2,x3,y1,y2,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";
    }
	return 0;
}