





"""simple docstring"""






import sys

A	     =					(
    '''73167176531330624919225119674426574742355349194934'''
    '''96983520312774506326239578318016984801869478851843'''
    '''85861560789112949495459501737958331952853208805511'''
    '''12540698747158523863050715693290963295227443043557'''
    '''66896648950445244523161731856403098711121722383113'''
    '''62229893423380308135336276614282806444486645238749'''
    '''30358907296290491560440772390713810515859307960866'''
    '''70172427121883998797908792274921901699720888093776'''
    '''65727333001053367881220235421809751254540594752243'''
    '''52584907711670556013604839586446706324415722155397'''
    '''53697817977846174064955149290862569321978468622482'''
    '''83972241375657056057490261407972968652414535100474'''
    '''82166370484403199890008895243450658541227588666881'''
    '''16427171479924442928230863465674813919123162824586'''
    '''17866458359124566529476545682848912883142607690042'''
    '''24219022671055626321111109370544217506941658960408'''
    '''07198403850962455444362981230987879927244284909188'''
    '''84580156166097919133875499200524063689912560717606'''
    '''05886116467109405077541002256983155200055935729725'''
    '''71636269561882670428252483600823257530420752963450'''
)

def       __A (     a_  :str)						->						int:
				__a	:  Union[str, Any]         =					1
				for digit in s:
								product *= int(a_)
				return product

def       __A (     a_  :str = N)						->						int:
				__a	:  List[Any]         =					-sys.maxsize - 1
				__a	:  Optional[Any]         =					n[:13]
				__a	:  Optional[int]         =					13
				while cur_index < len(a_) - 13:
								if int(n[cur_index]) >= int(substr[0]):
												__a	:  Union[str, Any]         =					substr[1:] + n[cur_index]
												cur_index += 1
								else:
												__a	:  List[Any]         =					max(a_				,    str_eval(a_))
												__a	:  Any         =					n[cur_index : cur_index + 13]
												cur_index += 13
				return largest_product


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






"""simple docstring"""






def       __A (     a_  :int				,    a_  :int)						->						str:
				if a < 0 or b < 0:
								raise ValueError('''the value of both inputs must be positive''')

				__a	:  Union[str, Any]         =					str(bin(a_))[2:]  # remove the leading "0b"
				__a	:  Union[str, Any]         =					str(bin(a_))[2:]  # remove the leading "0b"

				__a	:  Optional[Any]         =					max(len(a_)				,    len(a_))

				return "0b" + "".join(
				    str(int(char_a != char_b))
				    for char_a, char_b in zip(a_binary.zfill(a_)				,    b_binary.zfill(a_)))


if __name__ == "__main__":
		import doctest

		doctest.testmod()