# include <iostream>
# include <iomanip>
# include <algorithm>

using namespace std;


int main()
{
    int qn[4];
    int qm[4];
    int limit = 0;

    for (int i = 0; i < 4; i++) cin >> qn[i];
    for (int i = 0; i < 4; i++) cin >> qm[i];
    cin >> limit;

    int ans = 0;
    for (int a = 0; a < 4; a++) {
        ans += qn[a] * qm[a];
    }

    if (ans <= limit) cout << "Yes" << endl;else cout << "No" << endl;

}