





from __future__ import annotations

from collections.abc import Iterator



class    _a     :






							"""simple docstring"""

							def __init__(      self				:     List[Any]							,	a				:     int    )	->None:
													SCREAMING_SNAKE_CASE__     :				Optional[int]   =					value
													SCREAMING_SNAKE_CASE__     :				Node | None   =					None
													SCREAMING_SNAKE_CASE__     :				Node | None   =					None







class    _a     :






							"""simple docstring"""

							def __init__(      self				:     Tuple							,	a				:     Node    )	->None:
													SCREAMING_SNAKE_CASE__     :				int   =					tree

							def      A_  (      self				:     str							,	a				:     Node | None    )	->int:
													if node is None:
																			return 0
													return node.value + (
													    self.depth_first_search(node.left    ) + self.depth_first_search(node.right    )
													)






							def __iter__(      self				:     Optional[Any]    )	->Iterator[int]:
													yield self.depth_first_search(self.tree    )


if __name__ == "__main__":
				import doctest

				doctest.testmod()






from __future__ import annotations







def       UpperCAmelCase							(     _lowerCamelCase      :  list[int | float]			,   _lowerCamelCase      :  int			,   _lowerCamelCase      :  int     ):





						'''simple docstring'''


						if len(_lowerCamelCase     ) == 0:
												raise ValueError("find_max() arg is an empty sequence"     )
						if (
						    left >= len(_lowerCamelCase     )
						    or left < -len(_lowerCamelCase     )
						    or right >= len(_lowerCamelCase     )
						    or right < -len(_lowerCamelCase     )
						):
												raise IndexError("list index out of range"     )
						if left == right:
												return nums[left]
						SCREAMING_SNAKE_CASE__     :				Optional[int]   =					(left + right) >> 1  # the middle
						SCREAMING_SNAKE_CASE__     :				List[Any]   =					find_max(_lowerCamelCase			,   _lowerCamelCase			,   _lowerCamelCase     )  # find max in range[left, mid]
						SCREAMING_SNAKE_CASE__     :				Optional[int]   =					find_max(_lowerCamelCase			,   mid + 1			,   _lowerCamelCase     )  # find max in range[mid + 1, right]

						return left_max if left_max >= right_max else right_max


if __name__ == "__main__":
				import doctest

				doctest.testmod(verbose=True)