

'''simple docstring'''

from __future__ import annotations

from collections import defaultdict
from dataclasses import dataclass


@dataclass
class 					lowerCAmelCase       :
       lowerCAmelCase_				=	42
       lowerCAmelCase_				=	None
       lowerCAmelCase_				=	None






def 			__UpperCamelCase							(		):






     '''simple docstring'''





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

def 			__UpperCamelCase							(		lowercase__  :					TreeNode	):






     '''simple docstring'''





     def depth_first_search(
         lowercase__  :					TreeNode | None,   lowercase__  :					int,   lowercase__  :					list[int]	) -> None:
          if not root:
               return

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

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

     __lowercase     						=[]
     if not root:
          return right_view

     depth_first_search(lowercase__,   0,   lowercase__	)
     return right_view

def 			__UpperCamelCase							(		lowercase__  :					TreeNode	):






     '''simple docstring'''





     def depth_first_search(
         lowercase__  :					TreeNode | None,   lowercase__  :					int,   lowercase__  :					list[int]	) -> None:
          if not root:
               return

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

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

     __lowercase     						=[]
     if not root:
          return left_view

     depth_first_search(lowercase__,   0,   lowercase__	)
     return left_view

def 			__UpperCamelCase							(		lowercase__  :					TreeNode	):






     '''simple docstring'''





     def breadth_first_search(lowercase__  :					TreeNode,   lowercase__  :					list[int]	) -> None:
          __lowercase     						=[(root, 0)]
          __lowercase     						=defaultdict(lowercase__	)

          while queue:
               __lowercase     						=queue.pop(0	)
               __lowercase						,       __lowercase     						=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 lowercase__	: each[0]	):
               top_view.append(pair[1][0]	)

     __lowercase     						=[]
     if not root:
          return top_view

     breadth_first_search(lowercase__,   lowercase__	)
     return top_view

def 			__UpperCamelCase							(		lowercase__  :					TreeNode	):






     '''simple docstring'''





     from collections import defaultdict

     def breadth_first_search(lowercase__  :					TreeNode,   lowercase__  :					list[int]	) -> None:
          __lowercase     						=[(root, 0)]
          __lowercase     						=defaultdict(lowercase__	)

          while queue:
               __lowercase     						=queue.pop(0	)
               __lowercase						,       __lowercase     						=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 lowercase__	: each[0]	):
               bottom_view.append(pair[1][-1]	)

     __lowercase     						=[]
     if not root:
          return bottom_view

     breadth_first_search(lowercase__,   lowercase__	)
     return bottom_view


if __name__ == "__main__":
       import doctest

       doctest.testmod()





'''simple docstring'''

from typing import TYPE_CHECKING

from ...utils import OptionalDependencyNotAvailable, _LazyModule, is_torch_available, is_vision_available


UpperCAmelCase							=					{'''configuration_vit_hybrid''': ['''VIT_HYBRID_PRETRAINED_CONFIG_ARCHIVE_MAP''', '''ViTHybridConfig''']}

try:
       if not is_torch_available():
              raise OptionalDependencyNotAvailable()
except OptionalDependencyNotAvailable:
       pass
else:
       UpperCAmelCase							=					[
           '''VIT_HYBRID_PRETRAINED_MODEL_ARCHIVE_LIST''',
           '''ViTHybridForImageClassification''',
           '''ViTHybridModel''',
           '''ViTHybridPreTrainedModel''',
       ]

try:
       if not is_vision_available():
              raise OptionalDependencyNotAvailable()
except OptionalDependencyNotAvailable:
       pass
else:
       UpperCAmelCase							=					['''ViTHybridImageProcessor''']


if TYPE_CHECKING:
       from .configuration_vit_hybrid import VIT_HYBRID_PRETRAINED_CONFIG_ARCHIVE_MAP, ViTHybridConfig

       try:
              if not is_torch_available():
                     raise OptionalDependencyNotAvailable()
       except OptionalDependencyNotAvailable:
              pass
       else:
              from .modeling_vit_hybrid import (
                  VIT_HYBRID_PRETRAINED_MODEL_ARCHIVE_LIST,
                  ViTHybridForImageClassification,
                  ViTHybridModel,
                  ViTHybridPreTrainedModel,
              )

       try:
              if not is_vision_available():
                     raise OptionalDependencyNotAvailable()
       except OptionalDependencyNotAvailable:
              pass
       else:
              from .image_processing_vit_hybrid import ViTHybridImageProcessor


else:
       import sys

       UpperCAmelCase							=					_LazyModule(__name__, globals()['''__file__'''], _import_structure, module_spec=__spec__)


