

'''simple docstring'''




from collections.abc import Callable



class 							lowercase_						:

  '''simple docstring'''





  def __init__(  self ,			a_ = None  )				->					None:


    """simple docstring"""
    # Stores actual heap items.
    UpperCAmelCase    				=						[]
    # Stores indexes of each item for supporting updates and deletion.
    UpperCAmelCase    				=						{}
    # Stores current size of heap.
    UpperCAmelCase    				=						0
    # Stores function used to evaluate the score of an item on which basis ordering
    # will be done.
    UpperCAmelCase    				=						key or (lambda a_  : x)
  def     snake_case_      (  self ,			a_  )				->					int | None:


    """simple docstring"""
    return int((i - 1) / 2  ) if i > 0 else None
  def     snake_case_      (  self ,			a_  )				->					int | None:


    """simple docstring"""
    UpperCAmelCase    				=						int(2 * i + 1  )
    return left if 0 < left < self.size else None
  def     snake_case_      (  self ,			a_  )				->					int | None:


    """simple docstring"""
    UpperCAmelCase    				=						int(2 * i + 2  )
    return right if 0 < right < self.size else None
  def     snake_case_      (  self ,			a_ ,			a_  )				->					None:


    """simple docstring"""
    UpperCAmelCase				,   UpperCAmelCase    				=						(
        self.pos_map[self.arr[j][0]],
        self.pos_map[self.arr[i][0]],
    )
    # Then swap the items in the list.
    UpperCAmelCase				,   UpperCAmelCase    				=						self.arr[j], self.arr[i]
  def     snake_case_      (  self ,			a_ ,			a_  )				->					bool:


    """simple docstring"""
    return self.arr[i][1] < self.arr[j][1]
  def     snake_case_      (  self ,			a_  )				->					int:


    """simple docstring"""
    UpperCAmelCase    				=						self._left(a_  )
    UpperCAmelCase    				=						self._right(a_  )
    UpperCAmelCase    				=						i

    if left is not None and not self._cmp(a_ ,			a_  ):
      UpperCAmelCase    				=						left
    if right is not None and not self._cmp(a_ ,			a_  ):
      UpperCAmelCase    				=						right

    return valid_parent
  def     snake_case_      (  self ,			a_  )				->					None:


    """simple docstring"""
    UpperCAmelCase    				=						self._parent(a_  )
    while parent is not None and not self._cmp(a_ ,			a_  ):
      self._swap(a_ ,			a_  )
      UpperCAmelCase				,   UpperCAmelCase    				=						parent, self._parent(a_  )
  def     snake_case_      (  self ,			a_  )				->					None:


    """simple docstring"""
    UpperCAmelCase    				=						self._get_valid_parent(a_  )
    while valid_parent != index:
      self._swap(a_ ,			a_  )
      UpperCAmelCase				,   UpperCAmelCase    				=						valid_parent, self._get_valid_parent(a_  )
  def     snake_case_      (  self ,			a_ ,			a_  )				->					None:


    """simple docstring"""
    if item not in self.pos_map:
      return
    UpperCAmelCase    				=						self.pos_map[item]
    UpperCAmelCase    				=						[item, self.key(a_  )]
    # Make sure heap is right in both up and down direction.
    # Ideally only one of them will make any change.
    self._heapify_up(a_  )
    self._heapify_down(a_  )
  def     snake_case_      (  self ,			a_  )				->					None:


    """simple docstring"""
    if item not in self.pos_map:
      return
    UpperCAmelCase    				=						self.pos_map[item]
    del self.pos_map[item]
    UpperCAmelCase    				=						self.arr[self.size - 1]
    UpperCAmelCase    				=						index
    self.size -= 1
    # Make sure heap is right in both up and down direction. Ideally only one
    # of them will make any change- so no performance loss in calling both.
    if self.size > index:
      self._heapify_up(a_  )
      self._heapify_down(a_  )
  def     snake_case_      (  self ,			a_ ,			a_  )				->					None:


    """simple docstring"""
    UpperCAmelCase    				=						len(self.arr  )
    if arr_len == self.size:
      self.arr.append([item, self.key(a_  )]  )
    else:
      UpperCAmelCase    				=						[item, self.key(a_  )]
    UpperCAmelCase    				=						self.size
    self.size += 1
    self._heapify_up(self.size - 1  )
  def     snake_case_      (  self  )				->					tuple | None:


    """simple docstring"""
    return self.arr[0] if self.size else None





  def     snake_case_      (  self  )				->					tuple | None:


    """simple docstring"""
    UpperCAmelCase    				=						self.get_top()
    if top_item_tuple:
      self.delete_item(top_item_tuple[0]  )
    return top_item_tuple




def    lowerCamelCase__		(    ):
  pass


if __name__ == "__main__":
  import doctest

  doctest.testmod()





'''simple docstring'''




from ..utils import DummyObject, requires_backends



class 							lowercase_						(		metaclass=a			):

  '''simple docstring'''





  __lowerCAmelCase       :			str     	= ["keras_nlp"]
  def __init__(  self ,			*a_ ,			**a_  )				->					Union[str, Any]:


    """simple docstring"""
    requires_backends(self ,			['keras_nlp']  )


