code: 
  
  
  
  
  '''simple docstring'''
  
  
  
  
  
  
  
  from __future__ import annotations
  
  
  
  
  
  class   lowerCamelCase_							:
  
  
  
  
  					'''simple docstring'''
  
  
  
  
  
  
  					def __init__(					self,						__UpperCamelCase				):
  							_snake_case			 = data
  							_snake_case			 = None
  
  
  
  
  
  class   lowerCamelCase_							:
  
  
  
  
  					'''simple docstring'''
  
  
  
  
  
  
  					def __init__(					self				):
  							_snake_case			 = None
  
  
  
  
  
  
  					def        __SCREAMING_SNAKE_CASE			(					self,						__UpperCamelCase				):
  							_snake_case			 = Node(__UpperCamelCase				)
  							_snake_case			 = self.head
  							_snake_case			 = new_node
  							return self.head.data
  
  
  
  
  
  
  					def        __SCREAMING_SNAKE_CASE			(					self				):
  							_snake_case			 = self.head
  							_snake_case			 = self.head
  							if self.head:
  									while fast_pointer and fast_pointer.next:
  											_snake_case			 = fast_pointer.next.next
  											_snake_case			 = slow_pointer.next
  									return slow_pointer.data
  							else:
  									print("No element found."				)
  									return None
  
  
  if __name__ == "__main__":
  						_lowerCamelCase							:		str										=						LinkedList()
  						for _ in range(int(input().strip())):
  												_lowerCamelCase							:		Optional[int]										=						int(input().strip())
  												link.push(data)
  						print(link.middle_element())
  
  
  
  
  
  
style_context: 
  
  
  
  
  '''simple docstring'''
  
  
  
  
  
  
  
  import json
  from typing import List, Optional, Tuple
  
  from tokenizers import normalizers
  
  from ...tokenization_utils import AddedToken
  from ...tokenization_utils_fast import PreTrainedTokenizerFast
  from ...utils import logging
  from .tokenization_mpnet import MPNetTokenizer
  
  
  _lowerCamelCase							:		int										=						logging.get_logger(__name__)
  
  _lowerCamelCase							:		Any										=						{'vocab_file': 'vocab.txt', 'tokenizer_file': 'tokenizer.json'}
  
  _lowerCamelCase							:		Dict										=						{
      'vocab_file': {
          'microsoft/mpnet-base': 'https://huggingface.co/microsoft/mpnet-base/resolve/main/vocab.txt',
      },
      'tokenizer_file': {
          'microsoft/mpnet-base': 'https://huggingface.co/microsoft/mpnet-base/resolve/main/tokenizer.json',
      },
  }
  
  _lowerCamelCase							:		List[str]										=						{
      'microsoft/mpnet-base': 512,
  }
  
  _lowerCamelCase							:		Tuple										=						{
      'microsoft/mpnet-base': {'do_lower_case': True},
  }
  
  
  
  
  
  class   lowerCamelCase_							( UpperCAmelCase_							):
  
  
  
  
  					'''simple docstring'''
  
  
  
  
  
  
  					lowercase__					=				VOCAB_FILES_NAMES
  					lowercase__					=				PRETRAINED_VOCAB_FILES_MAP
  					lowercase__					=				PRETRAINED_INIT_CONFIGURATION
  					lowercase__					=				PRETRAINED_POSITIONAL_EMBEDDINGS_SIZES
  					lowercase__					=				MPNetTokenizer
  					lowercase__					=				["""input_ids""", """attention_mask"""]
  
  
  
  
  
  
  					def __init__(					self,						__UpperCamelCase=None,						__UpperCamelCase=None,						__UpperCamelCase=True,						__UpperCamelCase="<s>",						__UpperCamelCase="</s>",						__UpperCamelCase="</s>",						__UpperCamelCase="<s>",						__UpperCamelCase="[UNK]",						__UpperCamelCase="<pad>",						__UpperCamelCase="<mask>",						__UpperCamelCase=True,						__UpperCamelCase=None,						**__UpperCamelCase,						):
  							super().__init__(
  							    __UpperCamelCase,						tokenizer_file=__UpperCamelCase,						do_lower_case=__UpperCamelCase,						bos_token=__UpperCamelCase,						eos_token=__UpperCamelCase,						sep_token=__UpperCamelCase,						cls_token=__UpperCamelCase,						unk_token=__UpperCamelCase,						pad_token=__UpperCamelCase,						mask_token=__UpperCamelCase,						tokenize_chinese_chars=__UpperCamelCase,						strip_accents=__UpperCamelCase,						**__UpperCamelCase,						)
  
  							_snake_case			 = json.loads(self.backend_tokenizer.normalizer.__getstate__()				)
  							if (
  							    pre_tok_state.get("lowercase",						__UpperCamelCase				) != do_lower_case
  							    or pre_tok_state.get("strip_accents",						__UpperCamelCase				) != strip_accents
  							):
  									_snake_case			 = getattr(__UpperCamelCase,						pre_tok_state.pop("type"				)				)
  									_snake_case			 = do_lower_case
  									_snake_case			 = strip_accents
  									_snake_case			 = pre_tok_class(**__UpperCamelCase				)
  
  							_snake_case			 = do_lower_case
  
  
  
  
  
  
  					@property
  					def        __SCREAMING_SNAKE_CASE			(					self				):
  							if self._mask_token is None:
  									if self.verbose:
  											logger.error("Using mask_token, but it is not set yet."				)
  									return None
  							return str(self._mask_token				)
  
  
  
  
  
  
  					@mask_token.setter
  					def        __SCREAMING_SNAKE_CASE			(					self,						__UpperCamelCase				):
  							_snake_case			 = AddedToken(__UpperCamelCase,						lstrip=__UpperCamelCase,						rstrip=__UpperCamelCase				) if isinstance(__UpperCamelCase,						__UpperCamelCase				) else value
  							_snake_case			 = value
  
  
  
  
  
  
  					def        __SCREAMING_SNAKE_CASE			(					self,						__UpperCamelCase,						__UpperCamelCase=None				):
  							_snake_case			 = [self.bos_token_id] + token_ids_a + [self.eos_token_id]
  							if token_ids_a is None:
  									return output
  
  							return output + [self.eos_token_id] + token_ids_a + [self.eos_token_id]
  
  
  
  
  
  
  					def        __SCREAMING_SNAKE_CASE			(					self,						__UpperCamelCase,						__UpperCamelCase = None				):
  							_snake_case			 = [self.sep_token_id]
  							_snake_case			 = [self.cls_token_id]
  
  							if token_ids_a is None:
  									return len(cls + token_ids_a + sep				) * [0]
  							return len(cls + token_ids_a + sep + sep + token_ids_a + sep				) * [0]
  
  
  
  
  
  
  					def        __SCREAMING_SNAKE_CASE			(					self,						__UpperCamelCase,						__UpperCamelCase = None				):
  							_snake_case			 = self._tokenizer.model.save(__UpperCamelCase,						name=__UpperCamelCase				)
  							return tuple(__UpperCamelCase				)
  
  
  
  
  
  