using System;

​

public class Program

{

    public static void Main()

    {

        string processLead = null;

        string changeLead = null;

        if (!(processLead == null && changeLead == null))

        {

            Console.WriteLine("Hello World");

        }

        if (processLead == null && changeLead == null) == false)

        {

            Console.WriteLine("Hello World");

        }

        if (processLead != null || changeLead != null)

        {

            Console.WriteLine("Hello World");

        }

    }

}