


from __future__ import annotations

from collections import defaultdict
from dataclasses import dataclass







@dataclass
class lowerCAmelCase_		:

 '''simple docstring'''

 __snake_case				=    42
 __snake_case				=    None
 __snake_case				=    None






def 			__lowerCAmelCase       ()->    TreeNode:




      """simple docstring"""

      return TreeNode(3   ,   TreeNode(9   )   ,   TreeNode(20   ,   TreeNode(15   )   ,   TreeNode(7   )   )   )






def 			__lowerCAmelCase       (SCREAMING_SNAKE_CASE   )->    list[int]:




      """simple docstring"""

      def depth_first_search(
          SCREAMING_SNAKE_CASE   ,   SCREAMING_SNAKE_CASE   ,   SCREAMING_SNAKE_CASE   ) -> None:
            if not root:
                  return

            if depth == len(A_   ):
                  right_view.append(root.val   )

            depth_first_search(root.right   ,   depth + 1   ,   A_   )
            depth_first_search(root.left   ,   depth + 1   ,   A_   )

      snake_case_			= []
      if not root:
            return right_view

      depth_first_search(A_   ,   0   ,   A_   )
      return right_view






def 			__lowerCAmelCase       (SCREAMING_SNAKE_CASE   )->    list[int]:




      """simple docstring"""

      def depth_first_search(
          SCREAMING_SNAKE_CASE   ,   SCREAMING_SNAKE_CASE   ,   SCREAMING_SNAKE_CASE   ) -> None:
            if not root:
                  return

            if depth == len(A_   ):
                  left_view.append(root.val   )

            depth_first_search(root.left   ,   depth + 1   ,   A_   )
            depth_first_search(root.right   ,   depth + 1   ,   A_   )

      snake_case_			= []
      if not root:
            return left_view

      depth_first_search(A_   ,   0   ,   A_   )
      return left_view






def 			__lowerCAmelCase       (SCREAMING_SNAKE_CASE   )->    list[int]:




      """simple docstring"""

      def breadth_first_search(SCREAMING_SNAKE_CASE   ,   SCREAMING_SNAKE_CASE   ) -> None:
            snake_case_			= [(root, 0)]
            snake_case_			= defaultdict(A_   )

            while queue:
                  snake_case_			= queue.pop(0   )
                  snake_case_			= first

                  lookup[hd].append(node.val   )

                  if node.left:
                        queue.append((node.left, hd - 1)   )
                  if node.right:
                        queue.append((node.right, hd + 1)   )

            for pair in sorted(lookup.items()   ,   key=lambda SCREAMING_SNAKE_CASE   : each[0]   ):
                  top_view.append(pair[1][0]   )

      snake_case_			= []
      if not root:
            return top_view

      breadth_first_search(A_   ,   A_   )
      return top_view






def 			__lowerCAmelCase       (SCREAMING_SNAKE_CASE   )->    list[int]:




      """simple docstring"""

      from collections import defaultdict

      def breadth_first_search(SCREAMING_SNAKE_CASE   ,   SCREAMING_SNAKE_CASE   ) -> None:
            snake_case_			= [(root, 0)]
            snake_case_			= defaultdict(A_   )

            while queue:
                  snake_case_			= queue.pop(0   )
                  snake_case_			= first
                  lookup[hd].append(node.val   )

                  if node.left:
                        queue.append((node.left, hd - 1)   )
                  if node.right:
                        queue.append((node.right, hd + 1)   )

            for pair in sorted(lookup.items()   ,   key=lambda SCREAMING_SNAKE_CASE   : each[0]   ):
                  bottom_view.append(pair[1][-1]   )

      snake_case_			= []
      if not root:
            return bottom_view

      breadth_first_search(A_   ,   A_   )
      return bottom_view


if __name__ == "__main__":
   import doctest

   doctest.testmod()



"""simple docstring"""







from ..utils import DummyObject, requires_backends






class 		_A    (    metaclass=_a    ):







    """simple docstring"""




    UpperCAmelCase			:				int      =			["""torch""", """transformers""", """invisible_watermark"""]






    def __init__(   self							:       int							,					*__UpperCAmelCase							:       List[Any]							,					**__UpperCAmelCase							:       Optional[int]):
      requires_backends(self							,					["torch", "transformers", "invisible_watermark"])






    @classmethod
    def       __snake_case				(   cls							:       Optional[Any]							,					*__UpperCAmelCase							:       Any							,					**__UpperCAmelCase							:       int):
      requires_backends(cls							,					["torch", "transformers", "invisible_watermark"])






    @classmethod
    def       __snake_case				(   cls							:       List[Any]							,					*__UpperCAmelCase							:       Optional[Any]							,					**__UpperCAmelCase							:       Tuple):
      requires_backends(cls							,					["torch", "transformers", "invisible_watermark"])






class 		_A    (    metaclass=_a    ):







    """simple docstring"""




    UpperCAmelCase			:				Optional[int]      =			["""torch""", """transformers""", """invisible_watermark"""]






    def __init__(   self							:       int							,					*__UpperCAmelCase							:       Tuple							,					**__UpperCAmelCase							:       Tuple):
      requires_backends(self							,					["torch", "transformers", "invisible_watermark"])






    @classmethod
    def       __snake_case				(   cls							:       int							,					*__UpperCAmelCase							:       str							,					**__UpperCAmelCase							:       Optional[int]):
      requires_backends(cls							,					["torch", "transformers", "invisible_watermark"])






    @classmethod
    def       __snake_case				(   cls							:       Any							,					*__UpperCAmelCase							:       Optional[int]							,					**__UpperCAmelCase							:       Union[str, Any]):
      requires_backends(cls							,					["torch", "transformers", "invisible_watermark"])






