

from typing import Any



class    _a						:


					'''simple docstring'''






					def __init__(			self   ,	A__      ):
						A__							:   Dict					       =		data
						A__							:   Optional[int]					       =		None



class    _a						:


					'''simple docstring'''






					def __init__(			self      ):
						A__							:   Optional[int]					       =		None






					def   __A      (			self      ):
						A__							:   List[str]					       =		self.head
						while temp is not None:
							print(temp.data   ,	end=""" """      )
							A__							:   int					       =		temp.next
						print()






					def   __A      (			self   ,	A__      ):
						A__							:   List[str]					       =		Node(A__      )
						A__							:   Dict					       =		self.head
						A__							:   Tuple					       =		new_node






					def   __A      (			self   ,	A__   ,	A__      ):
						if node_data_a == node_data_a:
							return
						else:
							A__							:   str					       =		self.head
							while node_a is not None and node_a.data != node_data_a:
								A__							:   Union[str, Any]					       =		node_a.next

							A__							:   List[str]					       =		self.head
							while node_a is not None and node_a.data != node_data_a:
								A__							:   Optional[int]					       =		node_a.next

							if node_a is None or node_a is None:
								return

							A__							:   int					       =		node_a.data, node_a.data


if __name__ == "__main__":
		A_	:			Tuple  	=      LinkedList()
		for i in range(5, 0, -1):
				ll.push(i)

		ll.print_list()

		ll.swap_nodes(1, 4)
		print('After swapping')
		ll.print_list()






from __future__ import annotations

def 						UpperCamelCase (lowercase_:			float   ,				lowercase_:			float   ,				lowercase_:			float )					->				dict[str, float]:
	if (voltage, current, resistance).count(0 ) != 1:
		raise ValueError("""One and only one argument must be 0""" )
	if resistance < 0:
		raise ValueError("""Resistance cannot be negative""" )
	if voltage == 0:
		return {"voltage": float(current * resistance )}
	elif current == 0:
		return {"current": voltage / resistance}
	elif resistance == 0:
		return {"resistance": voltage / current}
	else:
		raise ValueError("""Exactly one argument must be 0""" )


if __name__ == "__main__":
	import doctest

	doctest.testmod()



