using System;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Ente a number");

        var num1 = Console.ReadLine();

        var num1Value = Convert.ToInt32(num1);

        Console.WriteLine("Enter a number");

        var num2 = Console.ReadLine();

        var num2Value = Convert.ToInt32(num2);

        var sub = num1Value - num2Value;

        Console.WriteLine( "Answer is " + sub);

    }

}