int Cal(int i, int j)
{
	if (i<0 || i>row-1 || j<0 || j>col-1 || map[i][j] == '.')
	{
		return 0;
	}

	map[i][j] = '.';
	return 1 + Cal(i,j-1) + Cal(i, j+1) + Cal(i-1, j) + Cal(i+1, j);

}