

'''simple docstring'''





from __future__ import annotations






def 				_lowerCAmelCase			(   __magic_name__						:     list[float]						)				->  float:
						lowercase :							Any    		=0.0_0
						lowercase :							Tuple    		=0
						for resistor in resistors:
												if resistor <= 0:
																		lowercase :							Dict    		=f'''Resistor at index {index} has a negative or zero value!'''
																		raise ValueError(__magic_name__						)
												first_sum += 1 / float(__magic_name__						)
												index += 1
						return 1 / first_sum






def 				_lowerCAmelCase			(   __magic_name__						:     list[float]						)				->  float:
						lowercase :							Optional[Any]    		=0.0_0
						lowercase :							int    		=0
						for resistor in resistors:
												sum_r += resistor
												if resistor < 0:
																		lowercase :							Tuple    		=f'''Resistor at index {index} has a negative value!'''
																		raise ValueError(__magic_name__						)
												index += 1
						return sum_r


if __name__ == "__main__":
							import doctest

							doctest.testmod()








'''simple docstring'''



import math







def   a__			(    a__		):




     """simple docstring"""


     return math.sqrt(a__		) * math.sqrt(a__		) == num







def   a__			(    a__		):




     """simple docstring"""


     __SCREAMING_SNAKE_CASE      = 0
     __SCREAMING_SNAKE_CASE      = n
     while left <= right:
          __SCREAMING_SNAKE_CASE      = (left + right) // 2
          if mid**2 == n:
               return True
          elif mid**2 > n:
               __SCREAMING_SNAKE_CASE      = mid - 1
          else:
               __SCREAMING_SNAKE_CASE      = mid + 1
     return False


if __name__ == "__main__":
  import doctest

  doctest.testmod()






