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

int main() {
	int a,b,c,k;
	cin >> a >> b >> c >> k;
	
	while (k>0 && b<=a) {
		b *=2;
		k--;
	}

	while (k>0 && c<=b) {
		c *=2;
		k--;
	}

	if (a<b && b<c) cout << "Yes" << endl;
	else cout << "No" << endl;
}