#include<bits/stdc++.h>
using namespace std;

int main()
{
	int a,b,c,k,sum=0;
	cin>>a>>b>>c>>k;
	while(b<=a)
	{
		sum++;
		b+=b;
	}
	while(c<=b)
	{
		sum++;
		c+=c;
	}
	if(sum<=k)
		cout<<"Yes"<<endl;
	else
		cout<<"No"<<endl;
	return 0;
}