using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.IO;
 
namespace ConsoleApplication2
{
    class Program
    {
        static void Main(string[] args)
        {
            using (StreamReader sr = new StreamReader(@"inputfile.txt"))
            {
                var tr = (sr as TextReader);
                var ss = new List<string>();
                while (!sr.EndOfStream)
                {
                    var s = tr.ReadLine();
                    if (!ss.Contains(s))
                    {
                        ss.Add(s);
                    }
                }
 
                ss.ForEach(s => Console.WriteLine(s));
 
            }
            //Console.ReadLine();
        }
    }
}
 

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