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#include <iostream>
void floodFill(int row, int col, char** board, int rows, int cols) {
if (row < 0 || row >= rows || col < 0 || col >= cols || board[row][col] == '#')
return;
board[row][col] = '#';
floodFill(row+1, col, board, rows, cols); // up
floodFill(row-1, col, board, rows, cols); // down
floodFill(row, col+1, board, rows, cols); // right
floodFill(row, col-1, board, rows, cols); // left
}
int main() {
int N, M;
std::cin >> N >> M;
char** board = new char*[N];
for (int i = 0; i < N; i++) {
board[i] = new char[M];
}
for (int i = 0; i < N; i++) {
for (int j = 0; j < M; j++) {
std::cin >> board[i][j];
}
}
int X, Y;
std::cin >> X >> Y;
floodFill(X, Y, board, N, M);
for (int i = 0; i < N; i++) {
for (int j = 0; j < M; j++) {
std::cout << board[i][j] << " ";
}
std::cout << std::endl;
}
for (int i = 0; i < N; i++) {
delete[] board[i];
}
delete[] board;
}
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