


from __future__ import annotations

from collections.abc import Iterator
from typing import Any


class        __lowerCamelCase      :


				"""simple docstring"""







				def __init__(				self     :    Dict	,							lowerCamelCase_     :    Any					):
								_lowerCAmelCase  						=data
								_lowerCAmelCase  						=None






				def __str__(				self     :    Tuple					):
								return F"{self.data}"


class        __lowerCamelCase      :


				"""simple docstring"""







				def __init__(				self     :    List[Any]					):
								_lowerCAmelCase  						=None
								_lowerCAmelCase  						=None






				def __iter__(				self     :    Optional[Any]					):
								_lowerCAmelCase  						=self.front
								while node:
												yield node.data
												_lowerCAmelCase  						=node.next






				def __len__(				self     :    List[str]					):
								return len(tuple(iter(self					)					)					)






				def __str__(				self     :    int					):
								return " <- ".join(str(lowerCamelCase_					) for item in self					)






				def        lowerCAmelCase__			(				self     :    Optional[Any]					):
								return len(self					) == 0






				def        lowerCAmelCase__			(				self     :    Optional[Any]	,							lowerCamelCase_     :    Any					):
								_lowerCAmelCase  						=Node(lowerCamelCase_					)
								if self.is_empty():
												_lowerCAmelCase  						=_lowerCAmelCase  						=node
								else:
												assert isinstance(self.rear	,							lowerCamelCase_					)
												_lowerCAmelCase  						=node
												_lowerCAmelCase  						=node






				def        lowerCAmelCase__			(				self     :    Any					):
								if self.is_empty():
												raise IndexError("""dequeue from empty queue"""					)
								assert isinstance(self.front	,							lowerCamelCase_					)
								_lowerCAmelCase  						=self.front
								_lowerCAmelCase  						=self.front.next
								if self.front is None:
												_lowerCAmelCase  						=None
								return node.data






				def        lowerCAmelCase__			(				self     :    Any					):
								_lowerCAmelCase  						=_lowerCAmelCase  						=None


if __name__ == "__main__":
		from doctest import testmod

		testmod()





def 		snake_case_   (				lowercase__     :    str     ):






				'''simple docstring'''






				_lowerCAmelCase  						=53_81
				for x in s:
								_lowerCAmelCase  						=((hash_value << 5) + hash_value) + ord(lowercase__     )
				return hash_value & 0Xffff_ffff

