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

int main() {
	ll a, b, c, k;
	cin >> a >> b >> c >> k;
	while (a >= b) {
		b *= 2;
		--k;
	}
	while (b >= c) {
		c *= 2;
		--k;
	}
	cout << (k >= 0 ? "Yes" : "No") << endl;
}
