






__lowerCamelCase	:		Optional[Any]										=   [0, 2, 4, 6, 8]
__lowerCamelCase	:		List[Any]										=   [1, 3, 5, 7, 9]







def 			A__							(      _a  :					int		,  _a  :					int		,  _a  :					list[int]		,  _a  :					int	):





 '''simple docstring'''







 if remaining_length == 0:
  if digits[0] == 0 or digits[-1] == 0:
   return 0

  for i in range(length // 2 - 1		,  -1		,  -1	):
   remainder += digits[i] + digits[length - i - 1]

   if remainder % 2 == 0:
    return 0

   remainder //= 10

  return 1

 if remaining_length == 1:
  if remainder % 2 == 0:
   return 0

  snake_case__  :    str							       =0
  for digit in range(10	):
   snake_case__  :    Optional[Any]							       =digit
   result += reversible_numbers(
       0		,  (remainder + 2 * digit) // 10		,  _a		,  _a	)
  return result

 snake_case__  :    Tuple							       =0
 for digita in range(10	):
  snake_case__  :    Optional[int]							       =digita

  if (remainder + digita) % 2 == 0:
   snake_case__  :    Tuple							       =ODD_DIGITS
  else:
   snake_case__  :    Dict							       =EVEN_DIGITS

  for digita in other_parity_digits:
   snake_case__  :    Tuple							       =digita
   result += reversible_numbers(
       remaining_length - 2		,  (remainder + digita + digita) // 10		,  _a		,  _a		,  )
 return result







def 			A__							(      _a  :					int = 9	):





 '''simple docstring'''







 snake_case__  :    Union[str, Any]							       =0
 for length in range(1		,  max_power + 1	):
  result += reversible_numbers(_a		,  0		,  [0] * length		,  _a	)
 return result


if __name__ == "__main__":
       print(F"{solution() = }")













class  _lowercase   :
      def __init__(     self				,			a   ):
       snake_case__  :    Optional[int]							       =size
       snake_case__  :    List[Any]							       =[0] * size
       snake_case__  :    List[Any]							       =[0] * size
      @staticmethod
      def 						lowercase__					(     a   ):
       return index | (index + 1)
      @staticmethod
      def 						lowercase__					(     a   ):
       return (index & (index + 1)) - 1
      def 						lowercase__					(     self				,			a				,			a   ):
       snake_case__  :    Optional[Any]							       =value
       while index < self.size:
        snake_case__  :    str							       =self.get_prev(a   ) + 1
        if current_left_border == index:
         snake_case__  :    Dict							       =value
        else:
         snake_case__  :    str							       =max(a				,			a				,			a   )
        snake_case__  :    Dict							       =self.get_next(a   )



      def 						lowercase__					(     self				,			a				,			a   ):
       right -= 1  # Because of right is exclusive
       snake_case__  :    Union[str, Any]							       =0
       while left <= right:
        snake_case__  :    List[str]							       =self.get_prev(a   )
        if left <= current_left:
         snake_case__  :    Optional[Any]							       =max(a				,			self.tree[right]   )
         snake_case__  :    Optional[Any]							       =current_left
        else:
         snake_case__  :    Tuple							       =max(a				,			self.arr[right]   )
         right -= 1
       return result


if __name__ == "__main__":
       import doctest

       doctest.testmod()





