#include <bits/stdc++.h>
using namespace std;
using Int = long long;
template <class T> inline bool setmin(T &A, T B){
	if (A > B){
		A = B;
		return true;
	} else {
		return false;
	}
}
template <class T> inline bool setmax(T &A, T B){
	if (A < B){
		A = B;
		return true;
	} else {
		return false;
	}
}
#define REP(x, y) for (int x = 0; x < int(y); ++x)
#define rep(x, y, z) for (int x = int(y); x < int(z); ++x)
#define PER(x, y) for (int x = int(y) - 1; x >= 0; --x)
#define per(x, y, z) for (int x = int(z) - 1; x >= int(y); --x)

void solve(){
	int A, B, C, D;
	cin >> A >> B >> C >> D;
	int P, Q, R, S, T;
	cin >> P >> Q >> R >> S >> T;
	cout << (A * P + B * Q + C * R + D * S <= T ? "Yes" : "No") << '\n';
}

int main(){
	ios::sync_with_stdio(false);
	cin.tie(nullptr);
	int t = 1;
	// cin >> t;
	while (t--){
		solve();
	}
}