using System;

class Emp

{

    private int num1,num2,result;

    // writeing operation

    public int setNUm1

    {

        set{num1=value;}

    }

    public int setNum2

    {

        set{num2 = value;}

    }

    //reading operation

    public int getResult

    {

        get{return result;}

    }

    public void add()

    {

        result = num1+num2;

    }

    public void sub()

    {

        result = num1-num2;

    }

}

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Hello World");

        Emp e = new Emp();

        Console.WriteLine("Enter the values");

        e.setNUm1 = int.Parse(Console.ReadLine());

        e.setNum2 = int.Parse(Console.ReadLine());

        e.add();

        Console.WriteLine("Addition result="+e.getResult);

        e.sub();

        Console.WriteLine("sub result="+e.getResult);

    }

}