using System;
using System.Collections.Generic;
using System.Linq;
using System.Text.RegularExpressions;

namespace Rextester
{
    public class Program
    {
        public static void Main(string[] args)
        {
            int n = int.Parse(Console.ReadLine());
            Console.Write("{0}{0}{1}{0}{0}", new string('*', n), new string(' ', n), new string('*', n));
            Console.WriteLine();
            for (int i = 1; i < n - 1; i++)
            {
                Console.Write("*");
                for(int y=0; y<(n*2)-2; y++) //chertae redove
                {
                    Console.Write("/");
                }
                Console.Write("*");

                 if (i == Math.Ceiling((double)(n - 2) / 2)) { Console.Write( new string('|', n)); }
                else { Console.Write(new string(' ', n)); }

                Console.Write("*");                                  //pochva vtoroto stuklo
                for (int y = 0; y < (n * 2) - 2; y++)
                {
                    Console.Write("/");
                }
                Console.Write("*");
                Console.WriteLine();

            }

            Console.Write("{0}{0}{1}{0}{0}", new string('*', n), new string(' ', n), new string('*', n)); /// pochva nai dolen red
            Console.WriteLine();
        }
    }
}