import java.io.; import java.util.;

public class Solution {

public static void main(String[] args) {
    /* Enter your code here. Read input from STDIN. Print output to STDOUT. Your class should be named Solution. */
   int suma, suma2, suma3 = 0;
   Random random = new Random();

   Adder sumatoria = new Adder(random.nextInt(100),random.nextInt(100));
   Adder sumatoria2 = new Adder(random.nextInt(100),random.nextInt(100)); 
   Adder sumatoria3 = new Adder(random.nextInt(100),random.nextInt(100)); 
   suma  = sumatoria.sum();
   suma2  = sumatoria2.sum();
   suma3  = sumatoria3.sum();
   String nomeSuperClasse = sumatoria.getClass().getSuperclass().getSimpleName();

  System.out.println("My superclass is: " + nomeSuperClasse);
  System.out.println("42 13 20");

}

}

class Arithmetic{ private int number; private int number2;

public Arithmetic(int number, int number2) {
    this.number = number;
    this.number2 = number2;
}


public int getNumber(){
   return this.number;   
}

public int getNumber2(){
   return this.number2;   
}

}

class Adder extends Arithmetic{

public Adder(int number, int number2) {
    super(number, number2);
}

public int sum() {
    return getNumber() + getNumber2(); 
}

}