#include<bits/stdc++.h>
#define int long long
using namespace std;
constexpr int mod=1e9+7;
signed main(){
    int a,b,c,k;
    cin>>a>>b>>c>>k;
    int ans=0;
    for(;b<=a;ans++,b*=2);
    for(;c<=b;ans++,c*=2);
    cout<<(ans<=k?"Yes":"No")<<endl;
}
