private static void maxChoc(int k) {
		BigInteger bigValueX = new BigInteger(Integer.toString(k/2));
		BigInteger bigValueY = null;
		if (k % 2 == 0) {
			bigValueX = bigValueX.multiply(bigValueX);
			System.out.println(bigValueX);	
		} else {
			bigValueY = new BigInteger(Integer.toString(k/2 + 1));
			bigValueX = bigValueX.multiply(bigValueY);
			System.out.println(bigValueX);
		}
	}