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

int main()
{
    vector<int> A(4);
    vector<int> B(4);
    for (int i = 0; i < 4; i++)
    {
        cin >> A[i];
    }
    for (int i = 0; i < 4; i++)
    {
        cin >> B[i];
    }
    int T;
    cin >> T;
    long long sum = 0;
    for (int i = 0; i < 4; i++)
    {
        sum += A[i] * B[i];
    }
    if (sum <= T)
    {
        cout << "Yes";
    }
    else
    {
        cout << "No";
    }
}