
def 	a_		(	__lowercase       :     Tuple			)			->  Tuple:
			_snake_case          =      []
			_snake_case          =      set({'(', '[', '{'}			)
			_snake_case          =      set({')', ']', '}'}			)
			_snake_case          =      {'{': '}', '[': ']', '(': ')'}

			for i in range(len(__lowercase			)			):
						if s[i] in open_brackets:
									stack.append(s[i]			)

						elif s[i] in closed_brackets and (
						    len(__lowercase			) == 0 or (len(__lowercase			) > 0 and open_to_closed[stack.pop()] != s[i])
						):
									return False

			return len(__lowercase			) == 0






def 	a_		(	)			->  str:
			_snake_case          =      input('Enter sequence of brackets: '			)
			if is_balanced(__lowercase			):
						print(__lowercase	, 'is balanced'			)
			else:
						print(__lowercase	, 'is not balanced'			)


if __name__ == "__main__":
			main()

def 	a_		(	__lowercase       :     int = 50_000_000			)			->  int:
			_snake_case          =      set()
			_snake_case          =      int((limit - 24) ** (1 / 2)			)

			_snake_case          =      set(range(3	, prime_square_limit + 1	, 2			)			)
			primes.add(2			)
			for p in range(3	, prime_square_limit + 1	, 2			):
						if p not in primes:
									continue
						primes.difference_update(set(range(p * p	, prime_square_limit + 1	, __lowercase			)			)			)

			for primea in primes:
						_snake_case          =      primea * primea
						for primea in primes:
									_snake_case          =      primea * primea * primea
									if square + cube >= limit - 16:
												break
									for primea in primes:
												_snake_case          =      primea * primea * primea * primea
												_snake_case          =      square + cube + tetr
												if total >= limit:
															break
												ret.add(__lowercase			)

			return len(__lowercase			)


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