


'''simple docstring'''







lowerCAmelCase    :     Optional[int]					=						[0, 2, 4, 6, 8]
lowerCAmelCase    :     Tuple					=						[1, 3, 5, 7, 9]






def 			lowercase				(_A   ,						_A   ,						_A   ,						_A					):







       """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 //= 1_0

              return 1

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

              _lowerCAmelCase    :							Union[str, Any]   			=       0
              for digit in range(1_0					):
                     _lowerCAmelCase    :							Optional[int]   			=       digit
                     result += reversible_numbers(
                         0   ,						(remainder + 2 * digit) // 1_0   ,						__A   ,						__A					)
              return result

       _lowerCAmelCase    :							Optional[Any]   			=       0
       for digita in range(1_0					):
              _lowerCAmelCase    :							Tuple   			=       digita

              if (remainder + digita) % 2 == 0:
                     _lowerCAmelCase    :							Tuple   			=       ODD_DIGITS
              else:
                     _lowerCAmelCase    :							Optional[int]   			=       EVEN_DIGITS

              for digita in other_parity_digits:
                     _lowerCAmelCase    :							Tuple   			=       digita
                     result += reversible_numbers(
                         remaining_length - 2   ,						(remainder + digita + digita) // 1_0   ,						__A   ,						__A   ,						)
       return result






def 			lowercase				(_A = 9					):







       """simple docstring"""







       _lowerCAmelCase    :							List[str]   			=       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() = }''')






'''simple docstring'''







from typing import TYPE_CHECKING

from ...utils import OptionalDependencyNotAvailable, _LazyModule, is_torch_available


lowerCAmelCase    :     Any					=						{
    """configuration_x_clip""": [
        """XCLIP_PRETRAINED_CONFIG_ARCHIVE_MAP""",
        """XCLIPConfig""",
        """XCLIPTextConfig""",
        """XCLIPVisionConfig""",
    ],
    """processing_x_clip""": ["""XCLIPProcessor"""],
}

try:
       if not is_torch_available():
              raise OptionalDependencyNotAvailable()
except OptionalDependencyNotAvailable:
       pass
else:
       lowerCAmelCase    :     Optional[Any]					=						[
           """XCLIP_PRETRAINED_MODEL_ARCHIVE_LIST""",
           """XCLIPModel""",
           """XCLIPPreTrainedModel""",
           """XCLIPTextModel""",
           """XCLIPVisionModel""",
       ]

if TYPE_CHECKING:
       from .configuration_x_clip import (
           XCLIP_PRETRAINED_CONFIG_ARCHIVE_MAP,
           XCLIPConfig,
           XCLIPTextConfig,
           XCLIPVisionConfig,
       )
       from .processing_x_clip import XCLIPProcessor

       try:
              if not is_torch_available():
                     raise OptionalDependencyNotAvailable()
       except OptionalDependencyNotAvailable:
              pass
       else:
              from .modeling_x_clip import (
                  XCLIP_PRETRAINED_MODEL_ARCHIVE_LIST,
                  XCLIPModel,
                  XCLIPPreTrainedModel,
                  XCLIPTextModel,
                  XCLIPVisionModel,
              )

else:
       import sys

       lowerCAmelCase    :     Dict					=						_LazyModule(__name__, globals()["""__file__"""], _import_structure, module_spec=__spec__)

