"""simple docstring"""





import math

__A     = 10
__A     = 7
__A     = BALLS_PER_COLOUR * NUM_COLOURS


def       lowercase_      (      _lowerCamelCase:		Tuple = 20					)       ->					str:



							'''simple docstring'''

							__lowerCamelCase    :						Any						      =   math.comb(_lowerCamelCase  ,      _lowerCamelCase					)
							__lowerCamelCase    :						List[str]						      =   math.comb(NUM_BALLS - BALLS_PER_COLOUR  ,      _lowerCamelCase					)

							__lowerCamelCase    :						Tuple						      =   NUM_COLOURS * (1 - missing_colour / total)

							return F"""{result:.9f}"""


if __name__ == "__main__":
				print(solution(20))
"""simple docstring"""






from typing import TYPE_CHECKING

from ....utils import OptionalDependencyNotAvailable, _LazyModule, is_torch_available


lowerCAmelCase__  :  str						     =	{
    'configuration_mctct': ['MCTCT_PRETRAINED_CONFIG_ARCHIVE_MAP', 'MCTCTConfig'],
    'feature_extraction_mctct': ['MCTCTFeatureExtractor'],
    'processing_mctct': ['MCTCTProcessor'],
}


try:
						if not is_torch_available():
												raise OptionalDependencyNotAvailable()
except OptionalDependencyNotAvailable:
						pass
else:
						lowerCAmelCase__  :  Any						     =	[
						    'MCTCT_PRETRAINED_MODEL_ARCHIVE_LIST',
						    'MCTCTForCTC',
						    'MCTCTModel',
						    'MCTCTPreTrainedModel',
						]


if TYPE_CHECKING:
						from .configuration_mctct import MCTCT_PRETRAINED_CONFIG_ARCHIVE_MAP, MCTCTConfig
						from .feature_extraction_mctct import MCTCTFeatureExtractor
						from .processing_mctct import MCTCTProcessor

						try:
												if not is_torch_available():
																		raise OptionalDependencyNotAvailable()
						except OptionalDependencyNotAvailable:
												pass
						else:
												from .modeling_mctct import MCTCT_PRETRAINED_MODEL_ARCHIVE_LIST, MCTCTForCTC, MCTCTModel, MCTCTPreTrainedModel

else:
						import sys

						lowerCAmelCase__  :  Any						     =	_LazyModule(__name__, globals()['__file__'], _import_structure, module_spec=__spec__)



