using System;

using System.IO;

using System.Collections.Generic;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Hello World");

        string pathInputFile=@"C:\Users\User\aaaa.txt";

      string pathOutputFile=@"C:\Users\User";

      List<string> linesToInputFile= new List<string>();

        List<long> longToInputFile= new List<long>();

         foreach(string line in File.ReadAllLines(pathInputFile))

      {

        linesToInputFile.Add(line);

      }

        foreach (string line in linesToInputFile)

                longToInputFile.Add(Convert.ToInt64(line));

        longToInputFile.Sort();

        using (StreamWriter outputFile = new                   

        StreamWriter(Path.Combine(pathOutputFile, "result.out")))

        {

            foreach (long number in longToInputFile)

                outputFile.WriteLine(number);

        }

    }

}