
from __future__ import annotations

from typing import Any







class 			snake_case__:







						'''simple docstring'''




						def __init__(			self				,  __lowercase				,  __lowercase							)   ->      None:  # noqa: A002
										lowerCAmelCase_	: int      			=			item
										lowerCAmelCase_	: Union[str, Any]      			=			next







class 			snake_case__:







						'''simple docstring'''




						def __init__(			self							)   ->      None:
										lowerCAmelCase_	: Node | None      			=			None
										lowerCAmelCase_	: Any      			=			0




						def   lowercase_	(			self				,  __lowercase							)   ->      None:
										lowerCAmelCase_	: Optional[int]      			=			Node(__lowercase				,  self.head							)
										self.size += 1




						def   lowercase_	(			self							)   ->      Any:




										if self.head is None:
														return None
										else:
														lowerCAmelCase_	: Dict      			=			self.head.item
														lowerCAmelCase_	: Tuple      			=			self.head.next
														self.size -= 1
														return item




						def   lowercase_	(			self							)   ->      bool:
										return self.head is None




						def __str__(			self							)   ->      str:




										if self.is_empty():
														return ""
										else:
														lowerCAmelCase_	: Optional[Any]      			=			self.head
														lowerCAmelCase_	: Optional[int]      			=			""""""
														lowerCAmelCase_	: list[str]      			=			[]
														while iterate:
																		item_list.append(str(iterate.item							)							)
																		lowerCAmelCase_	: List[str]      			=			iterate.next

														lowerCAmelCase_	: Optional[Any]      			=			""" --> """.join(__lowercase							)

														return item_str




						def __len__(			self							)   ->      int:
										return self.size



import math







class 			snake_case__:







						'''simple docstring'''




						def __init__(			self				,  __lowercase				,  __lowercase				,  __lowercase							)   ->      Tuple:
										lowerCAmelCase_	: List[str]      			=			x
										lowerCAmelCase_	: Dict      			=			y
										lowerCAmelCase_	: List[Any]      			=			z




						def __repr__(			self							)   ->      str:
										return f"""Point({self.x}, {self.y}, {self.z})"""






def      lowerCAmelCase	(						lowerCAmelCase_	,				lowerCAmelCase_	)->	float:
				return math.sqrt(abs((b.x - a.x) ** 2 + (b.y - a.y) ** 2 + (b.z - a.z) ** 2	)	)


if __name__ == "__main__":
						import doctest

						doctest.testmod()