#include <iostream>
using namespace std;
int main() {
    int x,y,z,k;cin>>x>>y>>z>>k;
    while(x>=y&&k){
        y*=2;k--;
    }
    while(y>=z&&k){z*=2;k--;}
    if(x<y&&y<z)cout<<"Yes"<<endl;
    else cout<<"No"<<endl;
    return 0;
}
