private static boolean simpleTest(int salary, int tax) {
		if (salary == 0 && tax == 0) {
			return true;
		}
		if (salary < 500 || salary > 20500) {
			return false;
		}
		if (salary > 1500 && tax == 0) {
			return false;
		}
		if (salary < 1500 && tax > 0) {
			return false;
		}
		if (tax > salary) {
			return false;
		}
		return true;
	}