using System;

​

public class Program

{

    public static void Main()

    {

        var hintText = "";

        var hintTextLob = "Default";

        if (!string.IsNullOrWhiteSpace(hintText) && (string.IsNullOrEmpty(hintTextLob) || hintTextLob == "Default"))

        {

            Console.WriteLine("First case");

        }

        else

        {

            if (hintTextLob == "Default")

            {

                Console.WriteLine("Second case");

            }

        }

    }

}