class IntPair {
    private int a;
    private int b;
    IntPair(int ai, int bi) { a = ai; b = bi; }
    int sum() { return this.add(); }             /*(*)*/
    private int add() { return a+b; }
}

class IntTriple extends IntPair {
    private int a;
    IntTriple (int ai, int bi, int ci) { super(ai, bi); a = ci;}
    int sum() { return this.add(); }             /*(x)*/
    private int add() { return super.sum() + a; }   /*(+)*/
}

public class PrivateTest {
    public static void main(String argv[]){
	IntPair ip = new IntPair(3,9);
	IntTriple it = new IntTriple(1,2,27);
	System.out.println(ip.sum() + " " + it.sum());
    }
}