05. Knight Path

using System;



class Program
{
    static void Main()
    {
        int[,] board = new int[8, 8];
        int row = 0;
        int col = 7;
        board[0, 7] = 1;
        int sum = 0;
        bool checker = false;


        while (true)
        {
            int backupCol = col;
            int backupRow = row;
            try
            {

                string[] command = Console.ReadLine().Split();
                if (command[0] == "stop")
                {
                    break;
                }
                string directionX = command[0];
                string directionY = command[1];
                switch (directionX)
                {
                    case "left": col -= 2; break;
                    case "right": col += 2; break;
                    case "up": row -= 2; break;
                    case "down": row += 2; break;

                }
                switch (directionY)
                {
                    case "left": col -= 1; break;
                    case "right": col += 1; break;
                    case "up": row -= 1; break;
                    case "down": row += 1; break;
                }
                if (board[row, col] == 1)
                {
                    board[row, col] = 0;
                }
              else
                {
                    board[row, col] = 1;

                }
            }
            catch (Exception)
            {
                row = backupRow;
                col = backupCol;
                continue;
            }
        }
        for (int i = 0; i < 8; i++)
        {
            for (int j = 0; j < 8; j++)
            {
                sum += board[i, j];
            }
        }
        if (sum ==0)
        {
            Console.WriteLine("[Board is empty]");
            return;

        }

        for (int i = 0; i < 8; i++)
        {
            string result = "";

            for (int j = 0; j < 8; j++)
            {
                result += "" + board[i, j];
            }
            int num = Convert.ToInt32(result, 2);
            if (num > 0)
            {
                checker = false;
                Console.WriteLine(num);
            }
        }




    }
}