#include <bits/stdc++.h>
using namespace std;
#define int long long
signed main(){
    int a,b,c,d,e,f,g,h,i;
    cin>>a>>b>>c>>d>>e>>f>>g>>h>>i;
    cout<<(i >= a*e+b*f+g*c+d*h ? "Yes" : "No")<<endl;
}