






"""simple docstring"""


from ..utils import DummyObject, requires_backends






class __a   (   metaclass=snake_case_				):
  __lowercase    :    Union[str, Any]						=					['vision']



  def __init__(self  :		List[str]				,			*lowercase_  :		Tuple				,			**lowercase_  :		Dict   )		->							str:
   requires_backends(self				,			['vision']   )






class __a   (   metaclass=snake_case_				):
  __lowercase    :    List[str]						=					['vision']



  def __init__(self  :		Union[str, Any]				,			*lowercase_  :		str				,			**lowercase_  :		Optional[int]   )		->							List[Any]:
   requires_backends(self				,			['vision']   )






class __a   (   metaclass=snake_case_				):
  __lowercase    :    Dict						=					['vision']



  def __init__(self  :		Dict				,			*lowercase_  :		Optional[int]				,			**lowercase_  :		int   )		->							Any:
   requires_backends(self				,			['vision']   )






class __a   (   metaclass=snake_case_				):
  __lowercase    :    Union[str, Any]						=					['vision']



  def __init__(self  :		List[str]				,			*lowercase_  :		int				,			**lowercase_  :		List[str]   )		->							Tuple:
   requires_backends(self				,			['vision']   )






class __a   (   metaclass=snake_case_				):
  __lowercase    :    Optional[int]						=					['vision']



  def __init__(self  :		int				,			*lowercase_  :		Union[str, Any]				,			**lowercase_  :		str   )		->							Union[str, Any]:
   requires_backends(self				,			['vision']   )






class __a   (   metaclass=snake_case_				):
  __lowercase    :    Any						=					['vision']



  def __init__(self  :		List[Any]				,			*lowercase_  :		Union[str, Any]				,			**lowercase_  :		int   )		->							Tuple:
   requires_backends(self				,			['vision']   )






class __a   (   metaclass=snake_case_				):
  __lowercase    :    Dict						=					['vision']



  def __init__(self  :		int				,			*lowercase_  :		int				,			**lowercase_  :		Any   )		->							Dict:
   requires_backends(self				,			['vision']   )






class __a   (   metaclass=snake_case_				):
  __lowercase    :    List[str]						=					['vision']



  def __init__(self  :		List[Any]				,			*lowercase_  :		Dict				,			**lowercase_  :		Optional[int]   )		->							Optional[int]:
   requires_backends(self				,			['vision']   )






class __a   (   metaclass=snake_case_				):
  __lowercase    :    Union[str, Any]						=					['vision']



  def __init__(self  :		Any				,			*lowercase_  :		Union[str, Any]				,			**lowercase_  :		Optional[Any]   )		->							List[str]:
   requires_backends(self				,			['vision']   )






class __a   (   metaclass=snake_case_				):
  __lowercase    :    Dict						=					['vision']



  def __init__(self  :		int				,			*lowercase_  :		Optional[int]				,			**lowercase_  :		Union[str, Any]   )		->							Optional[int]:
   requires_backends(self				,			['vision']   )






class __a   (   metaclass=snake_case_				):
  __lowercase    :    List[str]						=					['vision']



  def __init__(self  :		Dict				,			*lowercase_  :		Any				,			**lowercase_  :		List[str]   )		->							Any:
   requires_backends(self				,			['vision']   )






class __a   (   metaclass=snake_case_				):
  __lowercase    :    Optional[Any]						=					['vision']



  def __init__(self  :		str				,			*lowercase_  :		Any				,			**lowercase_  :		Tuple   )		->							Union[str, Any]:
   requires_backends(self				,			['vision']   )






class __a   (   metaclass=snake_case_				):
  __lowercase    :    Union[str, Any]						=					['vision']



  def __init__(self  :		Union[str, Any]				,			*lowercase_  :		Optional[Any]				,			**lowercase_  :		Union[str, Any]   )		->							Optional[int]:
   requires_backends(self				,			['vision']   )






class __a   (   metaclass=snake_case_				):
  __lowercase    :    Union[str, Any]						=					['vision']



  def __init__(self  :		Any				,			*lowercase_  :		Optional[Any]				,			**lowercase_  :		Union[str, Any]   )		->							Optional[int]:
   requires_backends(self				,			['vision']   )






class __a   (   metaclass=snake_case_				):
  __lowercase    :    int						=					['vision']



  def __init__(self  :		Union[str, Any]				,			*lowercase_  :		Optional[Any]				,			**lowercase_  :		List[str]   )		->							Dict:
   requires_backends(self				,			['vision']   )






class __a   (   metaclass=snake_case_				):
  __lowercase    :    Optional[Any]						=					['vision']



  def __init__(self  :		Any				,			*lowercase_  :		List[Any]				,			**lowercase_  :		Tuple   )		->							Any:
   requires_backends(self				,			['vision']   )






class __a   (   metaclass=snake_case_				):
  __lowercase    :    Optional[Any]						=					['vision']



  def __init__(self  :		str				,			*lowercase_  :		Any				,			**lowercase_  :		str   )		->							Any:
   requires_backends(self				,			['vision']   )






class __a   (   metaclass=snake_case_				):
  __lowercase    :    Optional[Any]						=					['vision']



  def __init__(self  :		Optional[int]				,			*lowercase_  :		Any				,			**lowercase_  :		Optional[Any]   )		->							Union[str, Any]:
   requires_backends(self				,			['vision']   )






class __a   (   metaclass=snake_case_				):
  __lowercase    :    List[Any]						=					['vision']



  def __init__(self  :		Dict				,			*lowercase_  :		Tuple				,			**lowercase_  :		List[str]   )		->							Any:
   requires_backends(self				,			['vision']   )






class __a   (   metaclass=snake_case_				):
  __lowercase    :    List[str]						=					['vision']



  def __init__(self  :		Dict				,			*lowercase_  :		Tuple				,			**lowercase_  :		Union[str, Any]   )		->							str:
   requires_backends(self				,			['vision']   )






class __a   (   metaclass=snake_case_				):
  __lowercase    :    Optional[int]						=					['vision']



  def __init__(self  :		List[Any]				,			*lowercase_  :		Optional[Any]				,			**lowercase_  :		int   )		->							str:
   requires_backends(self				,			['vision']   )






class __a   (   metaclass=snake_case_				):
  __lowercase    :    Dict						=					['vision']



  def __init__(self  :		Optional[Any]				,			*lowercase_  :		Optional[int]				,			**lowercase_  :		List[str]   )		->							Union[str, Any]:
   requires_backends(self				,			['vision']   )






class __a   (   metaclass=snake_case_				):
  __lowercase    :    List[str]						=					['vision']



  def __init__(self  :		Union[str, Any]				,			*lowercase_  :		Union[str, Any]				,			**lowercase_  :		Optional[Any]   )		->							Optional[Any]:
   requires_backends(self				,			['vision']   )






class __a   (   metaclass=snake_case_				):
  __lowercase    :    Optional[int]						=					['vision']



  def __init__(self  :		List[str]				,			*lowercase_  :		Union[str, Any]				,			**lowercase_  :		int   )		->							Optional[int]:
   requires_backends(self				,			['vision']   )






class __a   (   metaclass=snake_case_				):
  __lowercase    :    Tuple						=					['vision']



  def __init__(self  :		List[str]				,			*lowercase_  :		Tuple				,			**lowercase_  :		Optional[int]   )		->							Union[str, Any]:
   requires_backends(self				,			['vision']   )






class __a   (   metaclass=snake_case_				):
  __lowercase    :    Any						=					['vision']



  def __init__(self  :		Union[str, Any]				,			*lowercase_  :		Optional[Any]				,			**lowercase_  :		List[Any]   )		->							List[Any]:
   requires_backends(self				,			['vision']   )






class __a   (   metaclass=snake_case_				):
  __lowercase    :    str						=					['vision']



  def __init__(self  :		Optional[Any]				,			*lowercase_  :		Dict				,			**lowercase_  :		Any   )		->							Union[str, Any]:
   requires_backends(self				,			['vision']   )






class __a   (   metaclass=snake_case_				):
  __lowercase    :    Any						=					['vision']



  def __init__(self  :		int				,			*lowercase_  :		List[str]				,			**lowercase_  :		List[str]   )		->							Optional[Any]:
   requires_backends(self				,			['vision']   )






class __a   (   metaclass=snake_case_				):
  __lowercase    :    Optional[int]						=					['vision']



  def __init__(self  :		List[str]				,			*lowercase_  :		Any				,			**lowercase_  :		List[Any]   )		->							int:
   requires_backends(self				,			['vision']   )






class __a   (   metaclass=snake_case_				):
  __lowercase    :    List[str]						=					['vision']



  def __init__(self  :		int				,			*lowercase_  :		Tuple				,			**lowercase_  :		List[Any]   )		->							int:
   requires_backends(self				,			['vision']   )






class __a   (   metaclass=snake_case_				):
  __lowercase    :    Union[str, Any]						=					['vision']



  def __init__(self  :		List[str]				,			*lowercase_  :		Optional[Any]				,			**lowercase_  :		Optional[Any]   )		->							Optional[Any]:
   requires_backends(self				,			['vision']   )






class __a   (   metaclass=snake_case_				):
  __lowercase    :    Optional[Any]						=					['vision']



  def __init__(self  :		str				,			*lowercase_  :		Tuple				,			**lowercase_  :		Any   )		->							int:
   requires_backends(self				,			['vision']   )






class __a   (   metaclass=snake_case_				):
  __lowercase    :    Optional[int]						=					['vision']



  def __init__(self  :		List[Any]				,			*lowercase_  :		Tuple				,			**lowercase_  :		Optional[int]   )		->							List[Any]:
   requires_backends(self				,			['vision']   )






class __a   (   metaclass=snake_case_				):
  __lowercase    :    int						=					['vision']



  def __init__(self  :		Optional[int]				,			*lowercase_  :		Tuple				,			**lowercase_  :		Dict   )		->							str:
   requires_backends(self				,			['vision']   )






class __a   (   metaclass=snake_case_				):
  __lowercase    :    List[Any]						=					['vision']



  def __init__(self  :		int				,			*lowercase_  :		Union[str, Any]				,			**lowercase_  :		Dict   )		->							Any:
   requires_backends(self				,			['vision']   )






class __a   (   metaclass=snake_case_				):
  __lowercase    :    Tuple						=					['vision']



  def __init__(self  :		Dict				,			*lowercase_  :		Dict				,			**lowercase_  :		List[Any]   )		->							Union[str, Any]:
   requires_backends(self				,			['vision']   )






class __a   (   metaclass=snake_case_				):
  __lowercase    :    Any						=					['vision']



  def __init__(self  :		Union[str, Any]				,			*lowercase_  :		List[Any]				,			**lowercase_  :		Any   )		->							int:
   requires_backends(self				,			['vision']   )






class __a   (   metaclass=snake_case_				):
  __lowercase    :    Optional[Any]						=					['vision']



  def __init__(self  :		Union[str, Any]				,			*lowercase_  :		Optional[Any]				,			**lowercase_  :		Tuple   )		->							Tuple:
   requires_backends(self				,			['vision']   )






class __a   (   metaclass=snake_case_				):
  __lowercase    :    List[Any]						=					['vision']



  def __init__(self  :		Dict				,			*lowercase_  :		int				,			**lowercase_  :		Union[str, Any]   )		->							int:
   requires_backends(self				,			['vision']   )






class __a   (   metaclass=snake_case_				):
  __lowercase    :    List[str]						=					['vision']



  def __init__(self  :		Any				,			*lowercase_  :		Optional[Any]				,			**lowercase_  :		Union[str, Any]   )		->							Optional[Any]:
   requires_backends(self				,			['vision']   )






class __a   (   metaclass=snake_case_				):
  __lowercase    :    List[Any]						=					['vision']



  def __init__(self  :		Optional[int]				,			*lowercase_  :		Dict				,			**lowercase_  :		Tuple   )		->							Optional[int]:
   requires_backends(self				,			['vision']   )






class __a   (   metaclass=snake_case_				):
  __lowercase    :    str						=					['vision']



  def __init__(self  :		Optional[Any]				,			*lowercase_  :		Union[str, Any]				,			**lowercase_  :		int   )		->							Any:
   requires_backends(self				,			['vision']   )






class __a   (   metaclass=snake_case_				):
  __lowercase    :    Optional[Any]						=					['vision']



  def __init__(self  :		Any				,			*lowercase_  :		Union[str, Any]				,			**lowercase_  :		Dict   )		->							Optional[Any]:
   requires_backends(self				,			['vision']   )






class __a   (   metaclass=snake_case_				):
  __lowercase    :    List[Any]						=					['vision']



  def __init__(self  :		str				,			*lowercase_  :		List[Any]				,			**lowercase_  :		List[str]   )		->							Tuple:
   requires_backends(self				,			['vision']   )






class __a   (   metaclass=snake_case_				):
  __lowercase    :    str						=					['vision']



  def __init__(self  :		int				,			*lowercase_  :		Any				,			**lowercase_  :		Optional[int]   )		->							Any:
   requires_backends(self				,			['vision']   )






class __a   (   metaclass=snake_case_				):
  __lowercase    :    Tuple						=					['vision']



  def __init__(self  :		Union[str, Any]				,			*lowercase_  :		Tuple				,			**lowercase_  :		Optional[int]   )		->							Optional[int]:
   requires_backends(self				,			['vision']   )






class __a   (   metaclass=snake_case_				):
  __lowercase    :    Tuple						=					['vision']



  def __init__(self  :		Union[str, Any]				,			*lowercase_  :		List[Any]				,			**lowercase_  :		Tuple   )		->							Dict:
   requires_backends(self				,			['vision']   )






class __a   (   metaclass=snake_case_				):
  __lowercase    :    Union[str, Any]						=					['vision']



  def __init__(self  :		Union[str, Any]				,			*lowercase_  :		Optional[Any]				,			**lowercase_  :		List[Any]   )		->							str:
   requires_backends(self				,			['vision']   )






class __a   (   metaclass=snake_case_				):
  __lowercase    :    Dict						=					['vision']



  def __init__(self  :		List[str]				,			*lowercase_  :		str				,			**lowercase_  :		Optional[Any]   )		->							Optional[int]:
   requires_backends(self				,			['vision']   )






class __a   (   metaclass=snake_case_				):
  __lowercase    :    int						=					['vision']



  def __init__(self  :		Tuple				,			*lowercase_  :		Optional[Any]				,			**lowercase_  :		Dict   )		->							int:
   requires_backends(self				,			['vision']   )






class __a   (   metaclass=snake_case_				):
  __lowercase    :    List[Any]						=					['vision']



  def __init__(self  :		str				,			*lowercase_  :		Optional[int]				,			**lowercase_  :		Dict   )		->							Tuple:
   requires_backends(self				,			['vision']   )






class __a   (   metaclass=snake_case_				):
  __lowercase    :    Any						=					['vision']



  def __init__(self  :		Any				,			*lowercase_  :		Union[str, Any]				,			**lowercase_  :		Dict   )		->							Dict:
   requires_backends(self				,			['vision']   )






class __a   (   metaclass=snake_case_				):
  __lowercase    :    Any						=					['vision']



  def __init__(self  :		Any				,			*lowercase_  :		Dict				,			**lowercase_  :		Dict   )		->							List[Any]:
   requires_backends(self				,			['vision']   )






class __a   (   metaclass=snake_case_				):
  __lowercase    :    str						=					['vision']



  def __init__(self  :		Union[str, Any]				,			*lowercase_  :		Dict				,			**lowercase_  :		int   )		->							List[Any]:
   requires_backends(self				,			['vision']   )






class __a   (   metaclass=snake_case_				):
  __lowercase    :    Optional[int]						=					['vision']



  def __init__(self  :		Dict				,			*lowercase_  :		Any				,			**lowercase_  :		Tuple   )		->							int:
   requires_backends(self				,			['vision']   )






class __a   (   metaclass=snake_case_				):
  __lowercase    :    Union[str, Any]						=					['vision']



  def __init__(self  :		str				,			*lowercase_  :		str				,			**lowercase_  :		Tuple   )		->							Union[str, Any]:
   requires_backends(self				,			['vision']   )






class __a   (   metaclass=snake_case_				):
  __lowercase    :    Any						=					['vision']



  def __init__(self  :		Dict				,			*lowercase_  :		Dict				,			**lowercase_  :		Dict   )		->							List[Any]:
   requires_backends(self				,			['vision']   )






class __a   (   metaclass=snake_case_				):
  __lowercase    :    List[Any]						=					['vision']



  def __init__(self  :		str				,			*lowercase_  :		Any				,			**lowercase_  :		Optional[int]   )		->							List[Any]:
   requires_backends(self				,			['vision']   )






class __a   (   metaclass=snake_case_				):
  __lowercase    :    Optional[int]						=					['vision']



  def __init__(self  :		List[str]				,			*lowercase_  :		Dict				,			**lowercase_  :		str   )		->							Optional[Any]:
   requires_backends(self				,			['vision']   )






class __a   (   metaclass=snake_case_				):
  __lowercase    :    Dict						=					['vision']



  def __init__(self  :		int				,			*lowercase_  :		Optional[Any]				,			**lowercase_  :		int   )		->							Optional[int]:
   requires_backends(self				,			['vision']   )






class __a   (   metaclass=snake_case_				):
  __lowercase    :    int						=					['vision']



  def __init__(self  :		List[str]				,			*lowercase_  :		Dict				,			**lowercase_  :		int   )		->							Optional[int]:
   requires_backends(self				,			['vision']   )






class __a   (   metaclass=snake_case_				):
  __lowercase    :    List[Any]						=					['vision']



  def __init__(self  :		Dict				,			*lowercase_  :		Optional[int]				,			**lowercase_  :		Any   )		->							Optional[int]:
   requires_backends(self				,			['vision']   )






class __a   (   metaclass=snake_case_				):
  __lowercase    :    Optional[int]						=					['vision']



  def __init__(self  :		int				,			*lowercase_  :		List[str]				,			**lowercase_  :		int   )		->							Optional[int]:
   requires_backends(self				,			['vision']   )






class __a   (   metaclass=snake_case_				):
  __lowercase    :    Optional[Any]						=					['vision']



  def __init__(self  :		int				,			*lowercase_  :		str				,			**lowercase_  :		Optional[int]   )		->							Optional[Any]:
   requires_backends(self				,			['vision']   )






class __a   (   metaclass=snake_case_				):
  __lowercase    :    List[str]						=					['vision']



  def __init__(self  :		str				,			*lowercase_  :		Union[str, Any]				,			**lowercase_  :		int   )		->							List[str]:
   requires_backends(self				,			['vision']   )






class __a   (   metaclass=snake_case_				):
  __lowercase    :    int						=					['vision']



  def __init__(self  :		Dict				,			*lowercase_  :		Union[str, Any]				,			**lowercase_  :		Tuple   )		->							Any:
   requires_backends(self				,			['vision']   )






class __a   (   metaclass=snake_case_				):
  __lowercase    :    Dict						=					['vision']



  def __init__(self  :		Dict				,			*lowercase_  :		Any				,			**lowercase_  :		str   )		->							Tuple:
   requires_backends(self				,			['vision']   )






class __a   (   metaclass=snake_case_				):
  __lowercase    :    List[Any]						=					['vision']



  def __init__(self  :		Union[str, Any]				,			*lowercase_  :		str				,			**lowercase_  :		Any   )		->							List[str]:
   requires_backends(self				,			['vision']   )






class __a   (   metaclass=snake_case_				):
  __lowercase    :    int						=					['vision']



  def __init__(self  :		Union[str, Any]				,			*lowercase_  :		Union[str, Any]				,			**lowercase_  :		int   )		->							Union[str, Any]:
   requires_backends(self				,			['vision']   )






class __a   (   metaclass=snake_case_				):
  __lowercase    :    List[str]						=					['vision']



  def __init__(self  :		List[Any]				,			*lowercase_  :		Dict				,			**lowercase_  :		str   )		->							int:
   requires_backends(self				,			['vision']   )






class __a   (   metaclass=snake_case_				):
  __lowercase    :    str						=					['vision']



  def __init__(self  :		Dict				,			*lowercase_  :		str				,			**lowercase_  :		Tuple   )		->							int:
   requires_backends(self				,			['vision']   )






class __a   (   metaclass=snake_case_				):
  __lowercase    :    int						=					['vision']



  def __init__(self  :		Union[str, Any]				,			*lowercase_  :		List[str]				,			**lowercase_  :		Optional[Any]   )		->							List[Any]:
   requires_backends(self				,			['vision']   )






class __a   (   metaclass=snake_case_				):
  __lowercase    :    Optional[Any]						=					['vision']



  def __init__(self  :		str				,			*lowercase_  :		Optional[Any]				,			**lowercase_  :		Union[str, Any]   )		->							Optional[Any]:
   requires_backends(self				,			['vision']   )






class __a   (   metaclass=snake_case_				):
  __lowercase    :    Union[str, Any]						=					['vision']



  def __init__(self  :		List[Any]				,			*lowercase_  :		Dict				,			**lowercase_  :		int   )		->							Optional[Any]:
   requires_backends(self				,			['vision']   )













"""simple docstring"""


from __future__ import annotations

from typing import Any






class __a   :



  def __init__(self  :		Optional[Any]				,			lowercase_  :		Any				,			lowercase_  :		Any   )		->							None:  # noqa: A002
   __A	:       Optional[Any]       =	item
   __A	:       Union[str, Any]       =	next






class __a   :



  def __init__(self  :		Tuple   )		->							None:
   __A	:       Node | None       =	None
   __A	:       Dict       =	0



  def 						A_				(self  :		str				,			lowercase_  :		Any   )		->							None:
   __A	:       Dict       =	Node(lowercase_				,			self.head   )
   self.size += 1



  def 						A_				(self  :		Optional[int]   )		->							Any:
   # Switched 'self.is_empty()' to 'self.head is None'
   # because mypy was considering the possibility that 'self.head'
   # can be None in below else part and giving error
   if self.head is None:
    return None
   else:
    __A	:       Dict       =	self.head.item
    __A	:       List[str]       =	self.head.next
    self.size -= 1
    return item



  def 						A_				(self  :		List[str]   )		->							bool:
   return self.head is None



  def __str__(self  :		Any   )		->							str:
   if self.is_empty():
    return ""
   else:
    __A	:       List[str]       =	self.head
    __A	:       Union[str, Any]       =	''
    __A	:       list[str]       =	[]
    while iterate:
     item_list.append(str(iterate.item   )   )
     __A	:       List[str]       =	iterate.next

    __A	:       str       =	' --> '.join(lowercase_   )

    return item_str



  def __len__(self  :		Union[str, Any]   )		->							int:
   return self.size





