






'''simple docstring'''







from math import factorial
def     A__      (					__lowerCAmelCase		:      int = 20    ):
						lowerCamelCase__								=	2 * n  # middle entry of odd rows starting at row 3 is the solution for n = 1,
						# 2, 3,...
						lowerCamelCase__								=	n // 2

						return int(factorial(__lowerCAmelCase    ) / (factorial(__lowerCAmelCase    ) * factorial(n - k    ))    )


if __name__ == "__main__":
							import sys

							if len(sys.argv) == 1:
														print(solution(20))
							else:
														try:
																					UpperCamelCase     :   Tuple	      =		int(sys.argv[1])
																					print(solution(n))
														except ValueError:
																					print('Invalid entry - please enter a number.')





"""simple docstring"""




from typing import TYPE_CHECKING

from ...utils import OptionalDependencyNotAvailable, _LazyModule, is_sentencepiece_available


__magic_name__						: Tuple    =				{}


try:
					if not is_sentencepiece_available():
										raise OptionalDependencyNotAvailable()
except OptionalDependencyNotAvailable:
					pass
else:
					__magic_name__						: str    =				['MLukeTokenizer']

if TYPE_CHECKING:
					try:
										if not is_sentencepiece_available():
															raise OptionalDependencyNotAvailable()
					except OptionalDependencyNotAvailable:
										pass
					else:
										from .tokenization_mluke import MLukeTokenizer


else:
					import sys

					__magic_name__						: int    =				_LazyModule(__name__, globals()['__file__'], _import_structure, module_spec=__spec__)




