#include<iostream>
#include<vector>
using namespace std;

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