def  snake_case						(__lowercase ,      __lowercase = False						)	->	str:

						'''simple docstring'''



						if not isinstance(__lowercase ,      __lowercase						):
												_snake_case						:					str    =   F"""Expected string as input, found {type(__lowercase						)}"""
												raise ValueError(__lowercase						)
						if not isinstance(__lowercase ,      __lowercase						):
												_snake_case						:					Optional[int]    =   F"""Expected boolean as use_pascal parameter, found {type(__lowercase						)}"""
												raise ValueError(__lowercase						)

						_snake_case						:					List[str]    =   input_str.split("_"						)

						_snake_case						:					Dict    =   0 if use_pascal else 1

						_snake_case						:					Optional[Any]    =   words[start_index:]

						_snake_case						:					Dict    =   [word[0].upper() + word[1:] for word in words_to_capitalize]

						_snake_case						:					Tuple    =   "" if use_pascal else words[0]

						return "".join([initial_word, *capitalized_words]						)


if __name__ == "__main__":
				from doctest import testmod

				testmod()
def  snake_case						()	->	Dict:

						'''simple docstring'''



						_snake_case						:					List[str]    =   0
						for i in range(1 ,      1_001						):
												total += i**i
						return str(__lowercase						)[-10:]


if __name__ == "__main__":
				print(solution())