


"""simple docstring"""
import sys

__SCREAMING_SNAKE_CASE							:      Optional[int]						=      (
    '73167176531330624919225119674426574742355349194934'
    '96983520312774506326239578318016984801869478851843'
    '85861560789112949495459501737958331952853208805511'
    '12540698747158523863050715693290963295227443043557'
    '66896648950445244523161731856403098711121722383113'
    '62229893423380308135336276614282806444486645238749'
    '30358907296290491560440772390713810515859307960866'
    '70172427121883998797908792274921901699720888093776'
    '65727333001053367881220235421809751254540594752243'
    '52584907711670556013604839586446706324415722155397'
    '53697817977846174064955149290862569321978468622482'
    '83972241375657056057490261407972968652414535100474'
    '82166370484403199890008895243450658541227588666881'
    '16427171479924442928230863465674813919123162824586'
    '17866458359124566529476545682848912883142607690042'
    '24219022671055626321111109370544217506941658960408'
    '07198403850962455444362981230987879927244284909188'
    '84580156166097919133875499200524063689912560717606'
    '05886116467109405077541002256983155200055935729725'
    '71636269561882670428252483600823257530420752963450'
)







def   _a			( _SCREAMING_SNAKE_CASE = N			)      ->			int:
							snake_case_          =						-sys.maxsize - 1
							for i in range(len(_SCREAMING_SNAKE_CASE			) - 12			):
														snake_case_          =						1
														for j in range(13			):
																					product *= int(n[i + j]			)
														if product > largest_product:
																					snake_case_          =						product
							return largest_product


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







"""simple docstring"""
def   _a			( _SCREAMING_SNAKE_CASE			)      ->			list:

							if len(_SCREAMING_SNAKE_CASE			) <= 1:
														return [tuple(_SCREAMING_SNAKE_CASE			)]

							snake_case_          =						[]

							def generate(_SCREAMING_SNAKE_CASE			,	_SCREAMING_SNAKE_CASE			):
														if k == 1:
																					res.append(tuple(arr[:]			)			)
																					return

														generate(k - 1			,	_SCREAMING_SNAKE_CASE			)

														for i in range(k - 1			):
																					if k % 2 == 0:  # k is even
																												snake_case_    ,  snake_case_          =						arr[k - 1], arr[i]
																					else:  # k is odd
																												snake_case_    ,  snake_case_          =						arr[k - 1], arr[0]
																					generate(k - 1			,	_SCREAMING_SNAKE_CASE			)

							generate(len(_SCREAMING_SNAKE_CASE			)			,	_SCREAMING_SNAKE_CASE			)
							return res


if __name__ == "__main__":
				__SCREAMING_SNAKE_CASE							:      List[Any]						=      input('Enter numbers separated by a comma:\n').strip()
				__SCREAMING_SNAKE_CASE							:      str						=      [int(item) for item in user_input.split(',')]
				print(heaps(arr))



