"""simple docstring"""



from __future__ import annotations

class SCREAMING_SNAKE_CASE     :







	"""simple docstring"""


	def __init__(   self		:      Optional[int]					,   _snake_case		:      int				)				->			None:




				'''simple docstring'''






				a__     				=		data
				a__     				=		None

class SCREAMING_SNAKE_CASE     :







	"""simple docstring"""


	def __init__(   self		:      Optional[int]				)				->			Any:




				'''simple docstring'''






				a__     				=		None


	def        _lowerCAmelCase				(   self		:      Union[str, Any]					,   _snake_case		:      int				)				->			int:




				'''simple docstring'''






				a__     				=		Node(_snake_case				)
				a__     				=		self.head
				a__     				=		new_node
				return self.head.data



	def        _lowerCAmelCase				(   self		:      str				)				->			int | None:




				'''simple docstring'''






				a__     				=		self.head
				a__     				=		self.head
				if self.head:
							while fast_pointer and fast_pointer.next:
										a__     				=		fast_pointer.next.next
										a__     				=		slow_pointer.next
							return slow_pointer.data
				else:
							print('No element found.'				)
							return None


if __name__ == "__main__":
					__magic_name__    				=					LinkedList()
					for _ in range(int(input().strip())):
										__magic_name__    				=					int(input().strip())
										link.push(data)
					print(link.middle_element())



"""simple docstring"""



import platform
from argparse import ArgumentParser

import huggingface_hub
import pandas
import pyarrow

from datasets import __version__ as version
from datasets.commands import BaseDatasetsCLICommand





def   _lowerCamelCase ( UpperCAmelCase__					)							->     Any:


   '''simple docstring'''


   return EnvironmentCommand()




class SCREAMING_SNAKE_CASE     (    a	):







 """simple docstring"""


 @staticmethod
 def        _lowerCAmelCase				(   _snake_case		:      ArgumentParser				)				->			int:




    '''simple docstring'''






    a__     				=		parser.add_parser('env'					,   help='Print relevant system environment info.'				)
    download_parser.set_defaults(func=_snake_case				)


 def        _lowerCAmelCase				(   self		:      List[str]				)				->			Union[str, Any]:




    '''simple docstring'''






    a__     				=		{
        '`datasets` version': version,
        'Platform': platform.platform(),
        'Python version': platform.python_version(),
        'Huggingface_hub version': huggingface_hub.__version__,
        'PyArrow version': pyarrow.__version__,
        'Pandas version': pandas.__version__,
    }

    print('\nCopy-and-paste the text below in your GitHub issue.\n'				)
    print(self.format_dict(_snake_case				)				)

    return info



 @staticmethod
 def        _lowerCAmelCase				(   _snake_case		:      Tuple				)				->			Optional[int]:




    '''simple docstring'''






    return "\n".join([F'''- {prop}: {val}''' for prop, val in d.items()]				) + "\n"


