


"""simple docstring"""
import os
from distutils.util import strtobool







def 						_a				(      _SCREAMING_SNAKE_CASE				, _SCREAMING_SNAKE_CASE				)    ->				int:
							for e in env_keys:
														snake_case_           =		int(os.environ.get(_SCREAMING_SNAKE_CASE				, -1				)				)
														if val >= 0:
																					return val
							return default







def 						_a				(      _SCREAMING_SNAKE_CASE				, _SCREAMING_SNAKE_CASE=False				)    ->				Union[str, Any]:
							snake_case_           =		os.environ.get(_SCREAMING_SNAKE_CASE				, str(_SCREAMING_SNAKE_CASE				)				)
							return strtobool(_SCREAMING_SNAKE_CASE				) == 1  # As its name indicates `strtobool` actually returns an int...







def 						_a				(      _SCREAMING_SNAKE_CASE				, _SCREAMING_SNAKE_CASE="no"				)    ->				Optional[Any]:
							snake_case_           =		os.environ.get(_SCREAMING_SNAKE_CASE				, str(_SCREAMING_SNAKE_CASE				)				)
							return value







"""simple docstring"""
def 						_a				(      _SCREAMING_SNAKE_CASE				, _SCREAMING_SNAKE_CASE				, _SCREAMING_SNAKE_CASE				, _SCREAMING_SNAKE_CASE				, _SCREAMING_SNAKE_CASE				)    ->				int:
							if index == number_of_items:
														return 0
							snake_case_           =		0
							snake_case_           =		0
							snake_case_           =		knapsack(_SCREAMING_SNAKE_CASE				, _SCREAMING_SNAKE_CASE				, _SCREAMING_SNAKE_CASE				, _SCREAMING_SNAKE_CASE				, index + 1				)
							if weights[index] <= max_weight:
														snake_case_           =		values[index] + knapsack(
														    _SCREAMING_SNAKE_CASE				, _SCREAMING_SNAKE_CASE				, _SCREAMING_SNAKE_CASE				, max_weight - weights[index]				, index + 1				)
							return max(_SCREAMING_SNAKE_CASE				, _SCREAMING_SNAKE_CASE				)


if __name__ == "__main__":
				import doctest

				doctest.testmod()



