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

int main(){
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);

    int a,b,c,d; cin >> a >> b >> c >> d;
    int p,q,r,s; cin >> p >> q >> r >> s;
    int t; cin >> t;
    if(a*p+b*q+c*r+d*s <= t) cout << "Yes\n";
    else cout << "No\n";
}