using System;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("enter the amount");

        int balance = int.Parse(Console.ReadLine());

        int tamt = int.Parse(Console.ReadLine());

        Console.WriteLine("enter 1 to deposite");

        Console.WriteLine("enter 2 to widthdraw");

        int option=int.Parse(Console.ReadLine());

        if (option == 1)

        {

            balance=balance+tamt;

        }

        else if(option == 2)

        {

            balance=balance-tamt;

        }

        else

        {

            Console.WriteLine("invalid balance");

        }

    }

}