






'''simple docstring'''



import sys

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


def 							lowercase_				(    __A :       str			)       ->      int:



 """simple docstring"""




 lowercase					:   Optional[int]				  =1
 for digit in s:
  product *= int(__A			)
 return product


def 							lowercase_				(    __A :       str = N			)       ->      int:



 """simple docstring"""




 lowercase					:   List[str]				  =-sys.maxsize - 1
 lowercase					:   Optional[Any]				  =n[:1_3]
 lowercase					:   Union[str, Any]				  =1_3
 while cur_index < len(__A			) - 1_3:
  if int(n[cur_index]			) >= int(substr[0]			):
   lowercase					:   Optional[Any]				  =substr[1:] + n[cur_index]
   cur_index += 1
  else:
   lowercase					:   Dict				  =max(__A					,      str_eval(__A			)			)
   lowercase					:   Dict				  =n[cur_index : cur_index + 1_3]
   cur_index += 1_3
 return largest_product


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











'''simple docstring'''



import re


def 							lowercase_				(    __A :       str			)       ->      bool:



 """simple docstring"""




 lowercase					:   Any				  =re.compile(R'''^(\+91[\-\s]?)?[0]?(91)?[789]\d{9}$'''			)
 if match := re.search(__A					,      __A			):
  return match.string == phone
 return False


if __name__ == "__main__":
      print(indian_phone_validator('+918827897895'))



