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

int main() {
    cin.tie(nullptr);
    ios_base::sync_with_stdio(false);
    int a, b, c, d; cin >> a >> b >> c >> d;
    int p, q, r, s, t; cin >> p >> q >> r >> s >> t;
    if (a * p + b * q + c * r + d * s <= t) cout << "Yes" << "\n";
    else cout << "No" << "\n";
    return 0;
}