using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;


class Butterfly
{
    static void Main(string[] args)
    {
        int n = int.Parse(Console.ReadLine());
        for (int row = 0; row < n - 2; row++)
        {
            if (row % 2 == 0)
            {
                Console.WriteLine(new string('*', n - 2) + '\\' + ' ' + '/' + new string('*', n - 2));
            }
            else
                Console.WriteLine(new string('-', n - 2) + '\\' + ' ' + '/' + new string('-', n - 2));
        }
        Console.WriteLine(new string(' ', n - 1) + '@');
        for (int row = 0; row < n - 2; row++)
        {
            if (row % 2 == 0)
            {
                Console.WriteLine(new string('*', n - 2) + '/' + ' ' + '\\' + new string('*', n - 2));
            }
            else
                Console.WriteLine(new string('-', n - 2) + '/' + ' ' + '\\' + new string('-', n - 2));
        }
    }
}