using System;

public class Program

{

    public static void Main()

    {

        Console.WriteLine(" ******** Same Ids :( ********");

        for(var i = 0; i < 5; i++){

            Console.WriteLine("forloop uniqueId: " + GetUniqueId());

        }

        Console.WriteLine();

        Console.WriteLine(" ******** Different Ids as Expected :) ********");

        for(var i = 0; i < 5; i++){

            Console.WriteLine("forloop uniqueId: " + GetGUID());

        }

    }

    public static string GetUniqueId(){

        var ticks = new DateTime(2016,1,1).Ticks;

        var ans = DateTime.Now.Ticks - ticks;

        var uniqueId = ans.ToString("x");

        return uniqueId;

    }

    public static string GetGUID(){

        var ticks = new DateTime(2016,1,1).Ticks;

        var ans = DateTime.Now.Ticks - ticks;

        var uniqueId = ans.ToString("x");

        return Guid.NewGuid().ToString();

    }

}