#include <iostream>
#include <iomanip>
#include <vector>
#include <math.h>
#include <queue>
#include <deque>
#include <map>
#include <set>
using namespace std;
#define rep(i, n) for (int i = 0; i < (int)(n); ++i)
#define all(a) a.begin(), a.end()
#define arr(a) a.rbegin(), a.rend()
using ll = long long;

//Konishii

int main() {
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    
    vector<int> a(4), b(4);
    rep(i, 4) cin >> a[i];
    rep(i, 4) cin >> b[i];
    int t; cin >> t;
    rep(i, 4) t -= a[i] * b[i];

    cout << (t >= 0 ? "Yes" : "No") << endl;
}