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

namespace _05.Triangle
{
    class Program
    {
        static void Main(string[] args)
        {
            int n = int.Parse(Console.ReadLine());

            //Printing The First Line
            Console.WriteLine(new string('#', (4*n) + 1));

            //Making some help variables for count of symbols
            var dotsCount = 1;
            var spacesCount = 1;

            //Printing Next N Lines
            for (int i = 0; i < n; i++)
            {
                var diesCount = (((4 * n) + 1) - (2 * dotsCount + spacesCount)) / 2;

                //Checking for the middle line
                if (i == n / 2)
                {
                    //TODO some logic here for middle line
                    Console.WriteLine(new string('.', dotsCount) +
                        new string('#', diesCount) + new string(' ', (spacesCount - 3) / 2) +
                        "(@)" + new string(' ', (spacesCount - 3) / 2) +
                        new string('#', diesCount) + new string('.', dotsCount));
                }
                else
                {
                    //Printing Lines where there is not eye
                    Console.WriteLine(new string('.', dotsCount) +
                        new string('#', diesCount) + new string(' ', spacesCount) +
                        new string('#', diesCount) + new string('.', dotsCount));
                }

                dotsCount++;
                spacesCount += 2;
            }

            //Printing the final lines here
            //They are N count

            //Changing the variables for the first line
            spacesCount -= 2;
            var bottomDiesCount = spacesCount;

            for (int i = 0; i < n; i++)
            {
                Console.WriteLine(new string('.', dotsCount) +
                    new string('#', bottomDiesCount) + new string('.', dotsCount));
                dotsCount++;
                bottomDiesCount -= 2;
            }
        }
    }
}