






from __future__ import annotations

def _UpperCAmelCase   (	a						:	list[float] ):
							snake_case__	  =       0.00
							snake_case__	  =       0
							for resistor in resistors:
														if resistor <= 0:
																					snake_case__	  =       F'''Resistor at index {index} has a negative or zero value!'''
																					raise ValueError(UpperCAmelCase__ )
														first_sum += 1 / float(UpperCAmelCase__ )
														index += 1
							return 1 / first_sum

def _UpperCAmelCase   (	a						:	list[float] ):
							snake_case__	  =       0.00
							snake_case__	  =       0
							for resistor in resistors:
														sum_r += resistor
														if resistor < 0:
																					snake_case__	  =       F'''Resistor at index {index} has a negative value!'''
																					raise ValueError(UpperCAmelCase__ )
														index += 1
							return sum_r


if __name__ == "__main__":
	import doctest

	doctest.testmod()








import math
from collections.abc import Iterator
from itertools import takewhile

def _UpperCAmelCase   (	a						:	int ):

							if 1 < number < 4:
														# 2 and 3 are primes
														return True
							elif number < 2 or number % 2 == 0 or number % 3 == 0:
														# Negatives, 0, 1, all even numbers, all multiples of 3 are not primes
														return False

							# All primes number are in format of 6k +/- 1
							for i in range(5  ,					int(math.sqrt(a ) + 1 )  ,					6 ):
														if number % i == 0 or number % (i + 2) == 0:
																					return False
							return True

def _UpperCAmelCase   (	):
							snake_case__	  =       2
							while True:
														if is_prime(a ):
																					yield num
														num += 1

def _UpperCAmelCase   (	a						:	int = 200_0000 ):
							return sum(takewhile(lambda a : x < n  ,					prime_generator() ) )


if __name__ == "__main__":
	print(F'''{solution() = }''')
