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

namespace Problem_4_Persian_rugs
{
    class Program
    {
        static void Main(string[] args)
        {
            int N = int.Parse(Console.ReadLine());
            int D = int.Parse(Console.ReadLine());
            int dots = N - D - 2;
            int spaces = N - 1;
            int second = N - D - 1;
            for (int i = 0; i < N; i++)
            {
                Console.Write(new string('#', i));
                Console.Write(new string('\\', 1));
                if ((N - D) >= 2)
                {
                    if (second>0)
                    {
                        Console.Write(new string(' ', D));
                        Console.Write(new string('\\', 1));
                        Console.Write(new string('.', dots));
                        Console.Write(new string('.', 1));
                        Console.Write(new string('.', dots));
                        Console.Write(new string('/', 1));
                        Console.Write(new string(' ', D));
                        second--;
                        dots--;
                    }
                    else
                    {
                        Console.Write(new string(' ', spaces));
                        Console.Write(new string(' ', 1));
                        Console.Write(new string(' ', spaces));
                    }
                }
                else
                {
                    Console.Write(new string(' ', spaces));
                    Console.Write(new string(' ', 1));
                    Console.Write(new string(' ', spaces));
                }
                Console.Write(new string('/', 1));
                Console.Write(new string('#', i));
                Console.WriteLine();
                spaces--;
            }
            Console.Write(new string('#', N));
            Console.Write(new string('X', 1));
            Console.Write(new string('#', N));
            Console.WriteLine();
            spaces = 0;
            second = 0;
            dots = 0;
            for (int i = N-1; i >= 0; i--)
            {
                Console.Write(new string('#', i));
                Console.Write(new string('/', 1));
                if ((N - D) >= 2)
                {
                    if (second < N-(N - D - 1))
                    {
                        Console.Write(new string(' ', spaces));
                        Console.Write(new string(' ', 1));
                        Console.Write(new string(' ', spaces));
                        second++;

                    }
                    else
                    {
                        Console.Write(new string(' ', D));
                        Console.Write(new string('/', 1));
                        Console.Write(new string('.', dots));
                        Console.Write(new string('.', 1));
                        Console.Write(new string('.', dots));
                        Console.Write(new string('\\', 1));
                        Console.Write(new string(' ', D));
                        dots++;
                    }
                }
                else
                {
                    Console.Write(new string(' ', spaces));
                    Console.Write(new string(' ', 1));
                    Console.Write(new string(' ', spaces));
                }
                Console.Write(new string('\\', 1));
                Console.Write(new string('#', i));
                spaces++;
                Console.WriteLine();
            }
        }
    }
}