






from __future__ import annotations

from typing import Any

class 						lowerCAmelCase   (       __a	):

					'''simple docstring'''

					pass







class 						lowerCAmelCase   :

					'''simple docstring'''

					def __init__(     self :		List[Any]						,   __a :		Any							)	->     None:


												"""simple docstring"""

												__lowercase					:							Any			=   data
												__lowercase					:							Node | None			=   None



					def __iter__(     self :		Tuple							)	->     int:


												"""simple docstring"""

												__lowercase					:							Union[str, Any]			=   self
												__lowercase					:							List[str]			=   []
												while node:
																			if node in visited:
																										raise ContainsLoopError
																			visited.append(__a							)
																			yield node.data
																			__lowercase					:							Any			=   node.next_node



					@property
					def 					lowerCAmelCase (     self :		int							)	->     bool:


												"""simple docstring"""

												try:
																			list(self							)
																			return False
												except ContainsLoopError:
																			return True


if __name__ == "__main__":
	lowerCamelCase       :       Optional[int]        =				Node(1)
	lowerCamelCase       :       List[str]        =				Node(2)
	lowerCamelCase       :       Union[str, Any]        =				Node(3)
	lowerCamelCase       :       Union[str, Any]        =				Node(4)
	print(root_node.has_loop)  # False
	lowerCamelCase       :       List[str]        =				root_node.next_node
	print(root_node.has_loop)  # True

	lowerCamelCase       :       Dict        =				Node(5)
	lowerCamelCase       :       Any        =				Node(6)
	lowerCamelCase       :       Optional[int]        =				Node(5)
	lowerCamelCase       :       Optional[Any]        =				Node(6)
	print(root_node.has_loop)  # False

	lowerCamelCase       :       List[str]        =				Node(1)
	print(root_node.has_loop)  # False







from math import pi
def 					snake_case_						(   lowerCAmelCase_				:  int				,				lowerCAmelCase_				:  int					):
							return 2 * pi * radius * (angle / 360)


if __name__ == "__main__":
	print(arc_length(90, 10))