




from __future__ import annotations





def        __UpperCAmelCase						(							lowerCamelCase_ :     list[int]  )       ->  int:







			"""simple docstring"""





			SCREAMING_SNAKE_CASE_   : Optional[int]					  =      len(lowerCamelCase_  ) // 2

			# choose the middle 3 elements
			SCREAMING_SNAKE_CASE_   : Union[str, Any]					  =      lst[m - 1 : m + 2]

			# if middle element is peak
			if three[1] > three[0] and three[1] > three[2]:
						return three[1]

			# if increasing, recurse on right
			elif three[0] < three[2]:
						if len(lst[:m]  ) == 2:
									m -= 1
						return peak(lst[m:]  )

			# decreasing
			else:
						if len(lst[:m]  ) == 2:
									m += 1
						return peak(lst[:m]  )


if __name__ == "__main__":
						import doctest

						doctest.testmod()









from __future__ import annotations





def        __UpperCAmelCase						(							lowerCamelCase_ :     list[float]  )       ->  float:







			"""simple docstring"""





			SCREAMING_SNAKE_CASE_   : Tuple					  =      0.0_0
			SCREAMING_SNAKE_CASE_   : Tuple					  =      0
			for resistor in resistors:
						if resistor <= 0:
									SCREAMING_SNAKE_CASE_   : Optional[Any]					  =      F'Resistor at index {index} has a negative or zero value!'
									raise ValueError(lowerCamelCase_  )
						first_sum += 1 / float(lowerCamelCase_  )
						index += 1
			return 1 / first_sum





def        __UpperCAmelCase						(							lowerCamelCase_ :     list[float]  )       ->  float:







			"""simple docstring"""





			SCREAMING_SNAKE_CASE_   : Dict					  =      0.0_0
			SCREAMING_SNAKE_CASE_   : Union[str, Any]					  =      0
			for resistor in resistors:
						sum_r += resistor
						if resistor < 0:
									SCREAMING_SNAKE_CASE_   : Union[str, Any]					  =      F'Resistor at index {index} has a negative value!'
									raise ValueError(lowerCamelCase_  )
						index += 1
			return sum_r


if __name__ == "__main__":
						import doctest

						doctest.testmod()



