




"""simple docstring"""







from __future__ import annotations

from dataclasses import dataclass






@dataclass
class 					SCREAMING_SNAKE_CASE__    :
						_a			  =  42
						_a			  =  None
						_a			  =  None





def 							lowercase    (snake_case__      :       TreeNode | None       )   ->     str:


				'''simple docstring'''






				def is_valid_tree(snake_case__      :       TreeNode | None       ) -> bool:
								if node is None:
												return True

								if not isinstance(snake_case__					,				snake_case__       ):
												return False

								try:
												float(node.data       )
								except (TypeError, ValueError):
												return False

								return is_valid_tree(node.left       ) and is_valid_tree(node.right       )

				if not is_valid_tree(snake_case__       ):
								raise ValueError(
								    """Each node should be type of TreeNode and data should be float."""       )

				def is_binary_search_tree_recursive_check(
				    snake_case__      :       TreeNode | None					,				snake_case__      :       float					,				snake_case__      :       float       ) -> bool:

								if node is None:
												return True

								return (
								    left_bound < node.data < right_bound
								    and is_binary_search_tree_recursive_check(node.left					,				snake_case__					,				node.data       )
								    and is_binary_search_tree_recursive_check(
								        node.right					,				node.data					,				snake_case__       )
								)

				return is_binary_search_tree_recursive_check(snake_case__					,				-float("""inf"""       )					,				float("""inf"""       )       )


if __name__ == "__main__":
		import doctest

		doctest.testmod()







def 				a						(							snake_case__:					list						,   snake_case__:					list						,   snake_case__:					int						,   snake_case__:					int						,   snake_case__:					int					):


				'''simple docstring'''
				if index == number_of_items:
								return 0
				lowercase_       =					0
				lowercase_       =					0
				lowercase_       =					knapsack(snake_case__						,   snake_case__						,   snake_case__						,   snake_case__						,   index + 1					)
				if weights[index] <= max_weight:
								lowercase_       =					values[index] + knapsack(
								    snake_case__						,   snake_case__						,   snake_case__						,   max_weight - weights[index]						,   index + 1					)
				return max(snake_case__						,   snake_case__					)


if __name__ == "__main__":
						import doctest

						doctest.testmod()




