import math

def 			lowercase_				(			_lowerCamelCase							:       int):
    return math.sqrt(_lowerCamelCase) * math.sqrt(_lowerCamelCase) == num

def 			lowercase_				(			_lowerCamelCase							:       int):
    lowercase__ :   List[Any]    					=				0
    lowercase__ :   Tuple    					=				n
    while left <= right:
        lowercase__ :   str    					=				(left + right) // 2
        if mid**2 == n:
            return True
        elif mid**2 > n:
            lowercase__ :   Any    					=				mid - 1
        else:
            lowercase__ :   Union[str, Any]    					=				mid + 1
    return False


if __name__ == "__main__":
      import doctest

      doctest.testmod()







from __future__ import annotations


def        _UpperCamelCase							(      lowercase__      ):
						__SCREAMING_SNAKE_CASE						:     Dict					=		0.00
						__SCREAMING_SNAKE_CASE						:     List[str]					=		0
						for resistor in resistors:
												if resistor <= 0:
																		__SCREAMING_SNAKE_CASE						:     Any					=		F'''Resistor at index {index} has a negative or zero value!'''
																		raise ValueError(lowercase__      )
												first_sum += 1 / float(lowercase__      )
												index += 1
						return 1 / first_sum


def        _UpperCamelCase							(      lowercase__      ):
						__SCREAMING_SNAKE_CASE						:     Tuple					=		0.00
						__SCREAMING_SNAKE_CASE						:     int					=		0
						for resistor in resistors:
												sum_r += resistor
												if resistor < 0:
																		__SCREAMING_SNAKE_CASE						:     Tuple					=		F'''Resistor at index {index} has a negative value!'''
																		raise ValueError(lowercase__      )
												index += 1
						return sum_r


if __name__ == "__main__":
						import doctest

						doctest.testmod()
