public static int get(int h, int a, int b, int c) {
		int init = (int) Math.pow(2, h - 1);
		int val = init / 2;
		while (true) {
			if (init > a && init > b && init > c)
				init -= val;
			else if (init < a && init < b && init < c)
				init += val;
			else
				return init;
			val /= 2;
		}
	}