using System;

public class Program

{

    public static void Main()

    {

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

            Console.WriteLine(new string('*', n - 2) + "\\" + 

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

            for (int i = 1; i <= n / 2 - 1; i++)

            {

                Console.WriteLine(new string('-', n - 2) + "\\" +

                ' ' + "/" + new string('-', n - 2));

                Console.WriteLine(new string('*', n - 2) + "\\" +

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

            }

            Console.WriteLine(new string(' ', n - 1) + "@" +

                new string(' ', n - 1));

            Console.WriteLine(new string('*', n - 2) + "/" +

                ' ' + "\\" + new string('*', n - 2));

            for (int i = 1; i <= n / 2 - 1; i++)

            {

                Console.WriteLine(new string('-', n - 2) + "/" +

                ' ' + "\\" + new string('-', n - 2));

                Console.WriteLine(new string('*', n - 2) + "/" +

                ' ' + "\\" + new string('*', n - 2));

            }

        }

    }