

'''simple docstring'''
def  a__       (    _SCREAMING_SNAKE_CASE   :       str				)     ->					Dict:


	"""simple docstring"""





	UpperCAmelCase_					,					UpperCAmelCase_     :      List[Any]						=  [], []
	while len(_SCREAMING_SNAKE_CASE				) > 1:
		UpperCAmelCase_					,					UpperCAmelCase_     :      int						=  min(_SCREAMING_SNAKE_CASE				), max(_SCREAMING_SNAKE_CASE				)
		start.append(_SCREAMING_SNAKE_CASE				)
		end.append(_SCREAMING_SNAKE_CASE				)
		collection.remove(_SCREAMING_SNAKE_CASE				)
		collection.remove(_SCREAMING_SNAKE_CASE				)
	end.reverse()
	return start + collection + end


if __name__ == "__main__":
					_lowerCamelCase      					=     input("""Enter numbers separated by a comma:\n""").strip()
					_lowerCamelCase      					=     [int(item) for item in user_input.split(""",""")]
					print(*merge_sort(unsorted), sep=""",""")









"""simple docstring"""






from abc import ABC, abstractmethod
from argparse import ArgumentParser



class     UpperCAmelCase    (	__SCREAMING_SNAKE_CASE  ):



   @staticmethod
   @abstractmethod
   def    __UpperCAmelCase    (       __lowerCamelCase    :	ArgumentParser				):



     """simple docstring"""
     raise NotImplementedError()





   @abstractmethod
   def    __UpperCAmelCase    (       self    :	Optional[Any]				):



     """simple docstring"""
     raise NotImplementedError()





