#include <bits/stdc++.h>

using namespace std;

int main()
{
  int a,b,c,k;
  cin>>a>>b>>c>>k;
  while(k&&b<=a){
    b=b*2;
    k--;
  }
  while(k&&c<=b){
    c=c*2;
    k--;
  }
  if(b>a&&b<c){
    cout<<"Yes";
  }
  else cout<<"No";
}
