






from typing import Any
class      UpperCamelCase :







		"""simple docstring"""



		def __init__(  self		:       int						,_SCREAMING_SNAKE_CASE		:       Any		)    ->   Any:


						'''simple docstring'''
						A	 =      data
						A	 =      None







		def __repr__(  self		:       str		)    ->   str:


						'''simple docstring'''
						return f'Node({self.data})'


class      UpperCamelCase :







		"""simple docstring"""



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


						'''simple docstring'''
						A	 =      None
		def __iter__(  self		:       List[str]		)    ->   Any:


						'''simple docstring'''
						A	 =      self.head
						while node:
										yield node.data
										A	 =      node.next
		def __len__(  self		:       List[str]		)    ->   int:


						'''simple docstring'''
						return sum(1 for _ in self		)
		def __repr__(  self		:       Tuple		)    ->   str:


						'''simple docstring'''
						return "->".join([str(_SCREAMING_SNAKE_CASE		) for item in self]		)
		def __getitem__(  self		:       List[str]						,_SCREAMING_SNAKE_CASE		:       int		)    ->   Any:


						'''simple docstring'''
						if not 0 <= index < len(self		):
										raise ValueError('list index out of range.'		)
						for i, node in enumerate(self		):
										if i == index:
														return node
						return None
		def __setitem__(  self		:       Optional[int]						,_SCREAMING_SNAKE_CASE		:       int						,_SCREAMING_SNAKE_CASE		:       Any		)    ->   None:


						'''simple docstring'''
						if not 0 <= index < len(self		):
										raise ValueError('list index out of range.'		)
						A	 =      self.head
						for _ in range(_SCREAMING_SNAKE_CASE		):
										A	 =      current.next
						A	 =      data
		def       A(  self		:       Dict						,_SCREAMING_SNAKE_CASE		:       Any		)    ->   None:


						'''simple docstring'''
						self.insert_nth(len(self		)						,_SCREAMING_SNAKE_CASE		)
		def       A(  self		:       List[str]						,_SCREAMING_SNAKE_CASE		:       Any		)    ->   None:


						'''simple docstring'''
						self.insert_nth(0						,_SCREAMING_SNAKE_CASE		)
		def       A(  self		:       List[Any]						,_SCREAMING_SNAKE_CASE		:       int						,_SCREAMING_SNAKE_CASE		:       Any		)    ->   None:


						'''simple docstring'''
						if not 0 <= index <= len(self		):
										raise IndexError('list index out of range'		)
						A	 =      Node(_SCREAMING_SNAKE_CASE		)
						if self.head is None:
										A	 =      new_node
						elif index == 0:
										A	 =      self.head  # link new_node to head
										A	 =      new_node
						else:
										A	 =      self.head
										for _ in range(index - 1		):
														A	 =      temp.next
										A	 =      temp.next
										A	 =      new_node
		def       A(  self		:       Optional[int]		)    ->   None:  # print every node data


						'''simple docstring'''
						print(self		)
		def       A(  self		:       Optional[Any]		)    ->   Any:


						'''simple docstring'''
						return self.delete_nth(0		)
		def       A(  self		:       Union[str, Any]		)    ->   Any:  # delete from tail


						'''simple docstring'''
						return self.delete_nth(len(self		) - 1		)
		def       A(  self		:       List[str]						,_SCREAMING_SNAKE_CASE		:       int = 0		)    ->   Any:


						'''simple docstring'''
						if not 0 <= index <= len(self		) - 1:  # test if index is valid
										raise IndexError('List index out of range.'		)
						A	 =      self.head  # default first node
						if index == 0:
										A	 =      self.head.next
						else:
										A	 =      self.head
										for _ in range(index - 1		):
														A	 =      temp.next
										A	 =      temp.next
										A	 =      temp.next.next
						return delete_node.data
		def       A(  self		:       Tuple		)    ->   bool:


						'''simple docstring'''
						return self.head is None







		def       A(  self		:       Any		)    ->   None:


						'''simple docstring'''
						A	 =      None
						A	 =      self.head

						while current:
										# Store the current node's next node.
										A	 =      current.next
										# Make the current node's next point backwards
										A	 =      prev
										# Make the previous node be the current node
										A	 =      current
										# Make the current node the next node (to progress iteration)
										A	 =      next_node
						# Return prev in order to put the head at the end
						A	 =      prev







def      snake_case		(							):
				A	 =      LinkedList()
				assert linked_list.is_empty() is True
				assert str(UpperCAmelCase   ) == ""

				try:
								linked_list.delete_head()
								raise AssertionError  # This should not happen.
				except IndexError:
								assert True  # This should happen.

				try:
								linked_list.delete_tail()
								raise AssertionError  # This should not happen.
				except IndexError:
								assert True  # This should happen.

				for i in range(10   ):
								assert len(UpperCAmelCase   ) == i
								linked_list.insert_nth(UpperCAmelCase,						i + 1   )
				assert str(UpperCAmelCase   ) == "->".join(str(UpperCAmelCase   ) for i in range(1,						11   )   )

				linked_list.insert_head(0   )
				linked_list.insert_tail(11   )
				assert str(UpperCAmelCase   ) == "->".join(str(UpperCAmelCase   ) for i in range(0,						12   )   )

				assert linked_list.delete_head() == 0
				assert linked_list.delete_nth(9   ) == 10
				assert linked_list.delete_tail() == 11
				assert len(UpperCAmelCase   ) == 9
				assert str(UpperCAmelCase   ) == "->".join(str(UpperCAmelCase   ) for i in range(1,						10   )   )

				assert all(linked_list[i] == i + 1 for i in range(0,						9   )   ) is True

				for i in range(0,						9   ):
								A	 =      -i
				assert all(linked_list[i] == -i for i in range(0,						9   )   ) is True

				linked_list.reverse()
				assert str(UpperCAmelCase   ) == "->".join(str(UpperCAmelCase   ) for i in range(-8,						1   )   )







def      snake_case		(							):
				A	 =      [
				    -9,
				    1_00,
				    Node(77_34_51_12   ),
				    'dlrow olleH',
				    7,
				    55_55,
				    0,
				    -192.55_555,
				    'Hello, world!',
				    77.9,
				    Node(10   ),
				    None,
				    None,
				    12.20,
				]
				A	 =      LinkedList()

				for i in test_input:
								linked_list.insert_tail(UpperCAmelCase   )

				# Check if it's empty or not
				assert linked_list.is_empty() is False
				assert (
				    str(UpperCAmelCase   ) == "-9->100->Node(77345112)->dlrow olleH->7->5555->0->"
				    "-192.55555->Hello, world!->77.9->Node(10)->None->None->12.2"
				)

				# Delete the head
				A	 =      linked_list.delete_head()
				assert result == -9
				assert (
				    str(UpperCAmelCase   ) == "100->Node(77345112)->dlrow olleH->7->5555->0->-192.55555->"
				    "Hello, world!->77.9->Node(10)->None->None->12.2"
				)

				# Delete the tail
				A	 =      linked_list.delete_tail()
				assert result == 12.2
				assert (
				    str(UpperCAmelCase   ) == "100->Node(77345112)->dlrow olleH->7->5555->0->-192.55555->"
				    "Hello, world!->77.9->Node(10)->None->None"
				)

				# Delete a node in specific location in linked list
				A	 =      linked_list.delete_nth(10   )
				assert result is None
				assert (
				    str(UpperCAmelCase   ) == "100->Node(77345112)->dlrow olleH->7->5555->0->-192.55555->"
				    "Hello, world!->77.9->Node(10)->None"
				)

				# Add a Node instance to its head
				linked_list.insert_head(Node('Hello again, world!'   )   )
				assert (
				    str(UpperCAmelCase   )
				    == "Node(Hello again, world!)->100->Node(77345112)->dlrow olleH->"
				    "7->5555->0->-192.55555->Hello, world!->77.9->Node(10)->None"
				)

				# Add None to its tail
				linked_list.insert_tail(UpperCAmelCase   )
				assert (
				    str(UpperCAmelCase   )
				    == "Node(Hello again, world!)->100->Node(77345112)->dlrow olleH->"
				    "7->5555->0->-192.55555->Hello, world!->77.9->Node(10)->None->None"
				)

				# Reverse the linked list
				linked_list.reverse()
				assert (
				    str(UpperCAmelCase   )
				    == "None->None->Node(10)->77.9->Hello, world!->-192.55555->0->5555->"
				    "7->dlrow olleH->Node(77345112)->100->Node(Hello again, world!)"
				)







def      snake_case		(							):
				from doctest import testmod

				testmod()

				A	 =      LinkedList()
				linked_list.insert_head(input('Inserting 1st at head '   ).strip()   )
				linked_list.insert_head(input('Inserting 2nd at head '   ).strip()   )
				print('\nPrint list:'   )
				linked_list.print_list()
				linked_list.insert_tail(input('\nInserting 1st at tail '   ).strip()   )
				linked_list.insert_tail(input('Inserting 2nd at tail '   ).strip()   )
				print('\nPrint list:'   )
				linked_list.print_list()
				print('\nDelete head'   )
				linked_list.delete_head()
				print('Delete tail'   )
				linked_list.delete_tail()
				print('\nPrint list:'   )
				linked_list.print_list()
				print('\nReverse linked list'   )
				linked_list.reverse()
				print('\nPrint list:'   )
				linked_list.print_list()
				print('\nString representation of linked list:'   )
				print(UpperCAmelCase   )
				print('\nReading/changing Node data using indexing:'   )
				print(f'Element at Position 1: {linked_list[1]}'   )
				A	 =      input('Enter New Value: '   ).strip()
				print('New list:'   )
				print(UpperCAmelCase   )
				print(f'length of linked_list is : {len(UpperCAmelCase   )}'   )


if __name__ == "__main__":
					main()













from ...configuration_utils import PretrainedConfig
class      UpperCamelCase (				snake_case__ ):







		"""simple docstring"""



		snake_case    =   "bert-generation"
		def __init__(  self		:       Tuple						,_SCREAMING_SNAKE_CASE		:       Tuple=5_0_3_5_8						,_SCREAMING_SNAKE_CASE		:       str=1_0_2_4						,_SCREAMING_SNAKE_CASE		:       List[str]=2_4						,_SCREAMING_SNAKE_CASE		:       Optional[Any]=1_6						,_SCREAMING_SNAKE_CASE		:       Dict=4_0_9_6						,_SCREAMING_SNAKE_CASE		:       str="gelu"						,_SCREAMING_SNAKE_CASE		:       str=0.1						,_SCREAMING_SNAKE_CASE		:       Optional[Any]=0.1						,_SCREAMING_SNAKE_CASE		:       Tuple=5_1_2						,_SCREAMING_SNAKE_CASE		:       Optional[Any]=0.02						,_SCREAMING_SNAKE_CASE		:       List[str]=1E-12						,_SCREAMING_SNAKE_CASE		:       Tuple=0						,_SCREAMING_SNAKE_CASE		:       Union[str, Any]=2						,_SCREAMING_SNAKE_CASE		:       Optional[int]=1						,_SCREAMING_SNAKE_CASE		:       str="absolute"						,_SCREAMING_SNAKE_CASE		:       Optional[int]=True						,**_SCREAMING_SNAKE_CASE		:       Optional[int]						,)    ->   Dict:


						'''simple docstring'''
						super().__init__(pad_token_id=_SCREAMING_SNAKE_CASE						,bos_token_id=_SCREAMING_SNAKE_CASE						,eos_token_id=_SCREAMING_SNAKE_CASE						,**_SCREAMING_SNAKE_CASE		)

						A	 =      vocab_size
						A	 =      hidden_size
						A	 =      num_hidden_layers
						A	 =      num_attention_heads
						A	 =      hidden_act
						A	 =      intermediate_size
						A	 =      hidden_dropout_prob
						A	 =      attention_probs_dropout_prob
						A	 =      max_position_embeddings
						A	 =      initializer_range
						A	 =      layer_norm_eps
						A	 =      position_embedding_type
						A	 =      use_cache





