

def 		UpperCamelCase      (lowercase_:				list      )  ->   list:

	if len(lowercase_      ) <= 1:
		return [tuple(lowercase_      )]

	A__							:					Dict       =	[]

	def generate(lowercase_:				int					,   lowercase_:				list      ):
		if k == 1:
			res.append(tuple(arr[:]      )      )
			return

		generate(k - 1					,   lowercase_      )

		for i in range(k - 1      ):
			if k % 2 == 0:  # k is even
				A__     ,     A__							:					Optional[int]       =	arr[k - 1], arr[i]
			else:  # k is odd
				A__     ,     A__							:					List[str]       =	arr[k - 1], arr[0]
			generate(k - 1					,   lowercase_      )

	generate(len(lowercase_      )					,   lowercase_      )
	return res


if __name__ == "__main__":
	A_ :				int						 =    input('Enter numbers separated by a comma:\n').strip()
	A_ :				Any						 =    [int(item) for item in user_input.split(',')]
	print(heaps(arr))






import warnings

from ...utils import logging
from .image_processing_poolformer import PoolFormerImageProcessor


A_ :				Union[str, Any]						 =    logging.get_logger(__name__)



class 					_a		(__magic_name__       ):


					'''simple docstring'''






					def __init__(				self					, *A__					, **A__    ):
						warnings.warn(
						    """The class PoolFormerFeatureExtractor is deprecated and will be removed in version 5 of Transformers."""
						    """ Please use PoolFormerImageProcessor instead."""					, A__					, )
						super().__init__(*A__					, **A__    )



