using System;<\/p>\n\n\n\n
namespace BoardGame
{
class Program
{
static void Main(string[] args)
{
\/\/ Read input
string[] dimensions = Console.ReadLine().Split();
int H = int.Parse(dimensions[0]);
int W = int.Parse(dimensions[1]);<\/p>\n\n\n\n
char[][] board = new char[H][];\n for (int i = 0; i < H; i++)\n {\n board[i] = Console.ReadLine().ToCharArray();\n }\n\n string[] coordinates = Console.ReadLine().Split();\n int y = int.Parse(coordinates[0]);\n int x = int.Parse(coordinates[1]);\n\n \/\/ Modify the board\n if (board[y][x] == '.')\n {\n board[y][x] = '#';\n }\n else if (board[y][x] == '#')\n {\n board[y][x] = '.';\n }\n\n \/\/ Output the modified board\n for (int i = 0; i < H; i++)\n {\n Console.WriteLine(new string(board[i]));\n }\n }\n}<\/code><\/pre>\n\n\n\n}<\/p>\n","protected":false},"excerpt":{"rendered":"