



import sys

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







def       lowerCAmelCase_     (lowerCAmelCase__:						str   ):





			"""simple docstring"""


			UpperCAmelCase_:						str					=			1
			for digit in s:
						product *= int(_A   )
			return product







def       lowerCAmelCase_     (lowerCAmelCase__:						str = N   ):





			"""simple docstring"""


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


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









import os




def 			UpperCAmelCase__				(			_A      : Any							):





  '''simple docstring'''







  a__  =len(grid[0]							)
  a__  =len(_A							)

  a__  =0
  a__  =0
  a__  =0

  # Check vertically, horizontally, diagonally at the same time (only works
  # for nxn grid)
  for i in range(_A							):
    for j in range(n_rows - 3							):
      a__  =grid[j][i] * grid[j + 1][i] * grid[j + 2][i] * grid[j + 3][i]
      a__  =grid[i][j] * grid[i][j + 1] * grid[i][j + 2] * grid[i][j + 3]

      # Left-to-right diagonal (\) product
      if i < n_columns - 3:
        a__  =(
            grid[i][j]
            * grid[i + 1][j + 1]
            * grid[i + 2][j + 2]
            * grid[i + 3][j + 3]
        )

      # Right-to-left diagonal(/) product
      if i > 2:
        a__  =(
            grid[i][j]
            * grid[i - 1][j + 1]
            * grid[i - 2][j + 2]
            * grid[i - 3][j + 3]
        )

      a__  =max(
          _A	,      _A	,      _A	,      _A							)
      if max_product > largest:
        a__  =max_product

  return largest




def 			UpperCAmelCase__				(			):





  '''simple docstring'''







  a__  =[]
  with open(os.path.dirname(_A							) + '''/grid.txt'''							) as file:
    for line in file:
      grid.append(line.strip('''\n'''							).split(''' '''							)							)

  a__  =[[int(_A							) for i in grid[j]] for j in range(len(_A							)							)]

  return largest_product(_A							)


if __name__ == "__main__":
       print(solution())
