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

namespace ConsoleApp38
{
    class Program
    {
        static void Main(string[] args)
        {
            int n = int.Parse(Console.ReadLine());
            int rowLength = 12 * n - 5;

            Console.WriteLine("{0}#{0}", new string('.', (rowLength - 1 )/ 2));

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

                Console.WriteLine("{0}{1}{0}", new string('.',rowLength/ 2 - 3 * i), new string('#', 1 + 6*i));

            }
            Console.WriteLine(new string('#', rowLength));
            for (int i = 1; i <= n-2 ; i++)
            {
                Console.WriteLine("|{0}{1}{2}", new string('.', 3 * i - 1), new string('#', rowLength - (6*i)), new string('.', 3 * i));
            }
            for (int i = 1; i <= n-1; i++)
            {
                Console.WriteLine("|{0}{1}{2}", new string('.', 3 * n - 4), new string('#', 6 * n + 1), new string('.', 3 * n - 3));
            }
            Console.WriteLine("@{0}{1}{2}", new string('.', 3 * n - 4), new string('#', 6 * n + 1), new string('.', 3 * n - 3));
        }
    }
}