using System;

public class Program

{

    public static void Main()

    {

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

        int glassWidht = 2 * n;

        int middleWidht = n;

        string firstAndLastStars = new string('*',glassWidht);

        string middleSpaces = new string(' ',middleWidht);

        Console.WriteLine("{0}{1}{0}",firstAndLastStars,middleSpaces);

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

        {

        string slashes = new String('/', glassWidht - 2);

        string middle = middleSpaces;

            int middleRows = n-2;

            int pipeRows = 0;

            if(middleRows % 2 == 0)

            {

                pipeRows = middleRows/2-1;

            }

            else (i == middleRows/2);

            {

            middle = new String('|', n);

            }

            Console.WriteLine($"*{slashes}*{middleSpaces}{slashes}*");

        }

    }

}