






"""simple docstring"""


from typing import Any






class __a   :



  def __init__(self  :		Optional[Any]   )		->							Optional[Any]:
   __A	:       Tuple       =	[]
   __A	:       Any       =	0



  def __str__(self  :		str   )		->							Union[str, Any]:
   __A	:       List[str]       =	'<' + str(self.stack   )[1:-1] + '>'
   return printed



  def 						A_				(self  :		Optional[Any]				,			lowercase_  :		Any   )		->							None:
   self.stack.append(lowercase_   )
   __A	:       str       =	self.length + 1



  def 						A_				(self  :		Tuple   )		->							Any:
   self.rotate(1   )
   __A	:       Tuple       =	self.stack[self.length - 1]
   __A	:       List[Any]       =	self.stack[:-1]
   self.rotate(self.length - 1   )
   __A	:       Any       =	self.length - 1
   return dequeued



  def 						A_				(self  :		List[Any]				,			lowercase_  :		int   )		->							None:
   for _ in range(lowercase_   ):
    __A	:       Dict       =	self.stack[0]
    __A	:       Optional[Any]       =	self.stack[1:]
    self.put(lowercase_   )
    __A	:       Optional[int]       =	self.length - 1



  def 						A_				(self  :		Optional[Any]   )		->							Any:
   __A	:       Optional[Any]       =	self.get()
   self.put(lowercase_   )
   self.rotate(self.length - 1   )
   return front



  def 						A_				(self  :		List[Any]   )		->							int:
   return self.length













"""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





