using System;

using System.Collections.Generic;

public class Program

{

    public static void Main()

    {

        var name = new SortedSet<string>(){"Abhinay","Bala","Babu"};

        /*

        name.Add("Abhinay");

        name.Add("Bala");

        name.Add("bala");

        */

        foreach (var names in name)

        {

            Console.WriteLine(names);

        }

    }

}