using System;

using System.Collections;

using System.Collections.Generic;

using System.IO;

​

namespace codeforces

{

public class Program

{

    public static void Main()

    {

            //http://codeforces.com/contest/1131/problem/C

            Console.SetIn(new StreamReader("input.txt"));

            int n = Convert.ToInt32(Console.ReadLine());

            string[] children = Console.ReadLine().Split(' ');

​

            int[] ints = Array.ConvertAll(children, delegate(string s) { return int.Parse(s); });

​

            Array.Sort(ints);

​

            int i = n - 1;

            int mid = i / 2;

            while (i > mid)

            {

                int temp = ints[i];

                ints[i] = ints[mid];

                ints[mid] = temp;

                i--;

                mid++;

            }

​

            Console.WriteLine(String.Join(" ", ints));

        }

    }

}

​