#include <bits/stdc++.h>

using namespace std;

void fast_io() {
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
}

int main() {
    fast_io();
    int a[4];
    int p[4];
    int t;
    for (int i = 0; i < 4; i++) {
        cin >> a[i];
    }
    int tt = 0;
    for (int i = 0; i < 4; i++) {
        cin >> p[i];
        tt += a[i] * p[i];
    }
    cin >> t;
    cout << (tt <= t ? "Yes" : "No") << endl;
}