
"""simple docstring"""





_a														=		[0, 2, 4, 6, 8]
_a														=		[1, 3, 5, 7, 9]



def 				lowerCamelCase__		(      __snake_case,					__snake_case,					__snake_case,					__snake_case     )							->		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

										_UpperCamelCase										=  0
										for digit in range(10     ):
															_UpperCamelCase										=  digit
															result += reversible_numbers(
															    0,					(remainder + 2 * digit) // 10,					__snake_case,					__snake_case     )
										return result

					_UpperCamelCase										=  0
					for digita in range(10     ):
										_UpperCamelCase										=  digita

										if (remainder + digita) % 2 == 0:
															_UpperCamelCase										=  ODD_DIGITS
										else:
															_UpperCamelCase										=  EVEN_DIGITS

										for digita in other_parity_digits:
															_UpperCamelCase										=  digita
															result += reversible_numbers(
															    remaining_length - 2,					(remainder + digita + digita) // 10,					__snake_case,					__snake_case,					)
					return result



def 				lowerCamelCase__		(      __snake_case = 9     )							->		int:


					"""simple docstring"""





					_UpperCamelCase										=  0
					for length in range(1,					max_power + 1     ):
										result += reversible_numbers(__snake_case,					0,					[0] * length,					__snake_case     )
					return result


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








"""simple docstring"""





import os
from collections import namedtuple

import pytest

from datasets import ClassLabel, Features, Sequence, Value
from datasets.commands.test import TestCommand
from datasets.info import DatasetInfo, DatasetInfosDict


_a														=		namedtuple(
    """_TestCommandArgs""",
    [
        """dataset""",
        """name""",
        """cache_dir""",
        """data_dir""",
        """all_configs""",
        """save_infos""",
        """ignore_verifications""",
        """force_redownload""",
        """clear_cache""",
    ],
    defaults=[None, None, None, False, False, False, False, False],
)



def 				lowerCamelCase__		(      __snake_case,					__snake_case     )							->		Optional[int]:


					"""simple docstring"""





					return (abs(source - target     ) / target) < 0.01



@pytest.mark.integration
def 				lowerCamelCase__		(      __snake_case     )							->		Dict:


					"""simple docstring"""





					_UpperCamelCase										=  _TestCommandArgs(dataset=__snake_case,					all_configs=__snake_case,					save_infos=__snake_case     )
					_UpperCamelCase										=  TestCommand(*__snake_case     )
					test_command.run()
					_UpperCamelCase										=  os.path.join(__snake_case,					'''README.md'''     )
					assert os.path.exists(__snake_case     )
					_UpperCamelCase										=  DatasetInfosDict.from_directory(__snake_case     )
					_UpperCamelCase										=  DatasetInfosDict(
					    {
					        '''default''': DatasetInfo(
					            features=Features(
					                {
					                    '''tokens''': Sequence(Value('''string'''     )     ),
					                    '''ner_tags''': Sequence(
					                        ClassLabel(names=['''O''', '''B-PER''', '''I-PER''', '''B-ORG''', '''I-ORG''', '''B-LOC''', '''I-LOC''']     )     ),
					                    '''langs''': Sequence(Value('''string'''     )     ),
					                    '''spans''': Sequence(Value('''string'''     )     ),
					                }     ),					splits=[
					                {
					                    '''name''': '''train''',
					                    '''num_bytes''': 2_35_15_63,
					                    '''num_examples''': 1_00_00,
					                },
					                {
					                    '''name''': '''validation''',
					                    '''num_bytes''': 23_84_18,
					                    '''num_examples''': 10_00,
					                },
					            ],					download_size=3_94_06_80,					dataset_size=2_58_99_81,					)
					    }     )
					assert dataset_infos.keys() == expected_dataset_infos.keys()
					for key in DatasetInfo._INCLUDED_INFO_IN_YAML:
										_UpperCamelCase			,  _UpperCamelCase										=  getattr(dataset_infos['''default'''],					__snake_case     ), getattr(expected_dataset_infos['''default'''],					__snake_case     )
										if key == "num_bytes":
															assert is_apercent_close(__snake_case,					__snake_case     )
										elif key == "splits":
															assert list(__snake_case     ) == list(__snake_case     )
															for split in result:
																				assert result[split].name == expected[split].name
																				assert result[split].num_examples == expected[split].num_examples
																				assert is_apercent_close(result[split].num_bytes,					expected[split].num_bytes     )
										else:
															result == expected






