看吧

#include <bits/stdc++.h>
using namespace std;
int main(){
    int a,b,x1,x2,x3,y1,y2,y3,n;
    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;
}