#include <bits/stdc++.h>
using namespace std;

int main() {
    int a,b,c,d,p,q,r,s,t;
    cin >> a >> b >> c >> d;
    cin >> p >> q >> r >> s >> t;
    if(a*p +b*q + c*r + d*s <= t) cout << "Yes";
    else cout << "No";
	// your code goes here

}