using System;

public class Program

{

    public static void Main()

    {

        int nrOfStones = 0;

        Console.WriteLine("Enter nr of stones:");

        nrOfStones = int.Parse(Console.ReadLine());

        while(!(nrOfStones >= 1 && nrOfStones <= 20))

        {

             nrOfStones = int.Parse(Console.ReadLine());

        }

        Console.WriteLine("Enter weights of the stones delimited by white spaces:");

        string values = Console.ReadLine();

        string[] tokens = values.Split(' ');

        int[] stonesWeight = new int[nrOfStones];

        for(int i = 0; i < nrOfStones; i++)

        {

            stonesWeight[i] =int.Parse(tokens[i]);

        }

        //bubble sort ascendent

        int temp = 0;

        for (int write = 0; write < stonesWeight.Length; write++) {

            for (int sort = 0; sort < stonesWeight.Length - 1; sort++) {

                if (stonesWeight[sort] > stonesWeight[sort + 1]) {

                    temp = stonesWeight[sort + 1];

                    stonesWeight[sort + 1] = stonesWeight[sort];

                    stonesWeight[sort] = temp;

                }

            }

        }

        for (int i = 0; i < stonesWeight.Length; i++)

            Console.Write(stonesWeight[i] + " ");

        int firstIndex = stonesWeight.Length%2 == 0 ? 0 :1;

        int lastIndex = stonesWeight.Length - 1;

        int pile1Weight = 0;

        int pile2Weight = 0;

    }

}