#include <iostream>

using namespace std;

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

	return 0;
}