day8

        private static bool[,] grid;

        private static bool[] tmpRow;
        private static bool[] tmpColumn;

        static void Main(string[] args)
        {
            grid = new bool[50,6];
            tmpRow = new bool[50];
            tmpColumn = new bool[6];
            string[] lines = File.ReadAllLines("C:/input.txt");

            for(int i = 0; i < lines.Length; i++)
            {
                string[] commands = lines[i].Split(' ');
                if (commands[0] == "rect")
                {
                    string[] wh = commands[1].Split('x');
                    int w = int.Parse(wh[0]);
                    int h = int.Parse(wh[1]);
                    Rect(w, h);
                }
                else
                {
                    if(commands[1] == "row")
                    {
                        int rowId = int.Parse(commands[2].Split('=')[1]);
                        int rcount = int.Parse(commands[4]);
                        RotateRow(rowId, rcount);
                    }
                    else
                    {
                        int columnId = int.Parse(commands[2].Split('=')[1]);
                        int ccount = int.Parse(commands[4]);
                        RotateColumn(columnId, ccount);
                    }
                }
            }

            int result = 0;
            for(int x = 0; x < 50; x++)
            {
                for(int y = 0; y < 6; y++)
                {
                    if(grid[x,y])
                    {
                        result++;
                    }
                }
            }

            Console.WriteLine("Done");
            Console.WriteLine(result);
            Console.ReadKey();
        }

        public static void Rect(int width, int height)
        {
            for(int x = 0; x < width; x++)
            {
                for(int y = 0; y < height; y ++)
                {
                    grid[x, y] = true;
                }
            }
        }

        public static void RotateRow(int rowId, int count)
        {
            if(count == 50)
            {
                return;
            }
            count = count % 50;
            int offset = 50 - count;
            for(int i = 0; i <50; i++)
            {
                tmpRow[i] = grid[offset, rowId];
                offset++;
                offset = offset % 50;
            }
            for(int i = 0; i < 50; i++)
            {
                grid[i, rowId] = tmpRow[i];
            }
        }

        public static void RotateColumn(int columnId, int count)
        {
            if (count == 6)
            {
                return;
            }
            count = count % 6;
            int offset = 6 - count;
            for (int i = 0; i < 6; i++)
            {
                tmpColumn[i] = grid[columnId, offset];
                offset++;
                offset = offset % 6;
            }
            for (int i = 0; i < 6; i++)
            {
                grid[columnId, i] = tmpColumn[i];
            }
        }