#include <bits/stdc++.h>

using namespace std;

typedef long long ll;
typedef pair<ll,ll> P;
#define REP(i,n) for(ll i=0;i<ll(n);i++)










int main(void){
	cin.tie(nullptr);  ios_base::sync_with_stdio(false);
	ll i,j;





	ll A,B,C,D;
	cin >> A >> B >> C >> D;
	ll P,Q,R,S,T;
	cin >> P >> Q >> R >> S >> T;


	if(A*P+B*Q+C*R+D*S<=T) cout << "Yes" << endl;
	else cout << "No" << endl;







	return 0;
}