using System;
class Program
{
    static void Main()
    {
        int n = int.Parse(Console.ReadLine());
        int tochki = (n + (n - 1)) * 3;
        int shtagove = 1;
        int broiach = 0;
        for (int i = 2 * n; i > 0; i--)
        {
            Console.Write(new string('.', tochki));
            Console.Write(new string('#', shtagove));
            Console.Write(new string('.', tochki));
            tochki -= 3;
            shtagove += 6;
            Console.WriteLine();
            broiach++;
        }
        shtagove -= 12;
        tochki = 2;
        for (int c = 0; c < n - 2; c++)
        {
            Console.Write("|");
            Console.Write(new string('.', tochki));
            tochki++;
            Console.Write(new string('#', shtagove));
            shtagove -= 6;
            Console.Write(new string('.', tochki));
            tochki += 2;
            Console.WriteLine();
        }
        //shtagove += 6;
        for (int i = 0; i < n-1; i++)
        {
            Console.Write("|");
            Console.Write(new string('.', tochki));
            Console.Write(new string('#', shtagove));
            Console.Write(new string('.', tochki + 1));
            Console.WriteLine();
        }
        Console.Write("@");
        Console.Write(new string('.', tochki));
        Console.Write(new string('#', shtagove));
        Console.Write(new string('.', tochki + 1));

    }
}