import de.dhbwstuttgart.typeinference.Menge;

class OL2 {

	Integer m(Integer x) { return x + x; }
	
 	Boolean m(Boolean x) {return x || x; }
}

class Main {

	main(x) { 
		ol;
		ol = new OL2();
		y;
		/* y = new Menge<Integer>(); */
        y.addElement(ol.m(x));
	}
	
}