using System;

​

class Sum

{

    protected int num1;

    protected int num2;

    public void input(int x, int y)

    {

        num1 = x;

        num2 = y;

    }

    public void Add()

    {

        Console.WriteLine("The sum is "+(num1+num2));

    }

}   

class Mul : Sum

{

    public void mul()

    {

        Console.WriteLine("The product is "+(num1*num2));

    }

}   

public class Program

{

    public static void Main()

    {

         Console.WriteLine("Enter first number: ");

         int x = Convert.ToInt32(Console.ReadLine());

         Console.WriteLine("Enter second number: ");

         int y = Convert.ToInt32(Console.ReadLine());

          Console.Write("\n");

         Mul group1 = new Mul();

         group1.input(x,y);

         group1.Add();

         group1.mul();

    }

}