FireInTheMatrix

    using System;

    class FireInTheMatrix
    {
        static void Main()
        {
            //top row
            int width = int.Parse(Console.ReadLine());
            int topDots = (width / 2) - 1;
            Console.Write(new string('.', topDots));
            Console.Write(new string('#', 2));
            Console.WriteLine(new string('.', topDots));

            for (int i = 0; i < (width / 2) - 2; i++)
            {
                topDots--;
                Console.Write(new string('.', topDots));
                Console.Write('#');
                Console.Write(new string('.', i + 1));
                Console.Write(new string('.', i + 1));
                Console.Write('#');
                Console.WriteLine(new string('.', topDots));
            }

            Console.Write('#');
            Console.Write(new string('.', width - 2));
            Console.WriteLine('#');
            Console.Write('#');
            Console.Write(new string('.', width - 2));
            Console.WriteLine('#');

            int bottomDots = 0;
            int middleDots = (width / 2) - 1;
            for (int j = 0; j < ((width / 2) - 2) / 2; j++)
            {
                bottomDots++;
                middleDots--;

                Console.Write(new string('.', bottomDots));
                Console.Write('#');
                Console.Write(new string('.', middleDots));
                Console.Write(new string('.', middleDots));
                Console.Write('#');
                Console.WriteLine(new string('.', bottomDots));

            }
            Console.WriteLine(new string('-',width));
            Console.Write(new string('\\', width / 2));
            Console.WriteLine(new string('/',width/2));

            int bottomBottomDots = 0;
            int dashes = width / 2 ;
            for (int k = 0; k < width/2 - 1; k++)
            {
                bottomBottomDots++;
                dashes--;
                Console.Write(new string('.', bottomBottomDots));
                Console.Write(new string('\\', dashes));
                Console.Write(new string('/', dashes));
                Console.WriteLine(new string('.', bottomBottomDots));
            }

        }
    }

    //  12
    //      .....##.....
    //      ....#..#....
    //      ...#....#...
    //      ..#......#..
    //      .#........#.
    //      #..........#
    //      #..........#
    //      .#........#.
    //      ..#......#..
    //      ------------
    //      \\\\\\//////
    //      .\\\\\/////.
    //      ..\\\\////..
    //      ...\\\///...
    //      ....\\//....
    //      .....\/.....