using System;

public class Program

{

    public static void Main()

    {

     var n = int.Parse(Console.ReadLine());

    Console.WriteLine( new string('*', 2 * n) + new string(' ', n) + new string('*', 2 * n));

     for (int i = 0; i < n-2; i++)

        {

           var glass = "*" + new string('/', 2 * n - 2) + "*";

         if (i==(n-1)/2-1)  

         Console.WriteLine(glass + new string('|',n) + glass);

         else  Console.WriteLine(glass + new string(' ',n) + glass);

         }

        Console.WriteLine(new string('*', 2 * n) + new string(' ', n) + new string('*', 2 * n));

​

    }

}