public class over {
	public static void main(String[] args){
    	ovr a1 = new ovr1();
        ovr a2 = new ovr2();
        System.out.println(a1.sun(3,2) + a2.sun(3,2));
    }
    
    int sun(int x, int y){
    	return x + y;
    }
}

class ovr2 extends ovr1 {
	int sun(int x, int y){
    	return x - y + super.sun(x,y);
    }
}