using System;

class person{

    private int bal=0;

    public person(int num){

        bal =num;

        Console.WriteLine(bal);

        }

    public void d(int num){

    bal = bal+num;

    Console.WriteLine(bal);

    }

    public void w(int num){

    bal = bal-num;

    Console.WriteLine(bal);

    }

    }

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Hello World");

        person GUY=new person(10);

        GUY.d(100000000);

        GUY.w(1);

        person ALON=new person(-69420);

        ALON.d(69);

        ALON.w(69696969);

    }

}