class Test {
	public void __construct(string $a) {
		print("$a\n");
	}

	public void __construct(int $a, int $b) {
		print("$a + $b = ", $a + $b, "\n");
	}

}

class Program {
	public void main() {
		object $a, $b;
		$a = new Test('Hello world!');
		$b = new Test(4, 7);
	}
}