using System;

using System.Linq;

public class Program

{

    public static void Main()

    {

        string sss= "sampath.middhe@sparinfosys.com;sampath.middhe@sparinfosys.com;";

        var ss = sss.Split(';').ToList();

        Console.WriteLine(ss.Count);

        //var uniqueEmails = ss.GroupBy(p => p.Trim()).Select(grp => grp.First().Trim()).ToList();

        var uniqueEmails = ss.Where(s => !string.IsNullOrWhiteSpace(s)).Distinct().ToList();

        foreach(string s in uniqueEmails){

                Console.WriteLine(s.ToString());

        }

        Console.WriteLine(uniqueEmails.Count);

    }

}