using System;

public class Program

{

    public static void Main()

    {

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

        for (int i=0;i<2*n-1;i++)

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

        Console.WriteLine("{0}", new string('#',12*n-5));

        for (int i=0;i<n-2;i++)

        {Console.WriteLine("|{0}{1}{2}", new string('.',3*i+2), new string('#',12*n-11-6*i),new string('.',3*i+3));}

        for (int i=0;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));

    }

}