




from __future__ import annotations





def 		__A		(	__lowerCamelCase							,			__lowerCamelCase							,			__lowerCamelCase							,			)      ->       tuple[str, float]:
	if (stress, tangential_force, area).count(0    ) != 1:
		raise ValueError("""You cannot supply more or less than 2 values"""    )
	elif stress < 0:
		raise ValueError("""Stress cannot be negative"""    )
	elif tangential_force < 0:
		raise ValueError("""Tangential Force cannot be negative"""    )
	elif area < 0:
		raise ValueError("""Area cannot be negative"""    )
	elif stress == 0:
		return (
		    "stress",
		    tangential_force / area,
		)
	elif tangential_force == 0:
		return (
		    "tangential_force",
		    stress * area,
		)
	else:
		return (
		    "area",
		    tangential_force / stress,
		)


if __name__ == "__main__":
		import doctest

		doctest.testmod()







from __future__ import annotations

from collections.abc import Iterator

class 		__lowerCAmelCase	:
							def __init__(						self						:Optional[Any]		,      __magic_name__						:int				):







								'''simple docstring'''







								a										=							value
								a										=							None
								a										=							None







class 		__lowerCAmelCase	:
							def __init__(						self						:str		,      __magic_name__						:Node				):







								'''simple docstring'''







								a										=							tree
							def       lowerCamelCase__							(						self						:str		,      __magic_name__						:Node | None				):







								'''simple docstring'''







								if node is None:
									return 0
								return node.value + (
								    self.depth_first_search(node.left				) + self.depth_first_search(node.right				)
								)





							def __iter__(						self						:Tuple				):







								'''simple docstring'''







								yield self.depth_first_search(self.tree				)


if __name__ == "__main__":
		import doctest

		doctest.testmod()

