





def      lowerCAmelCase_ (       __a	,    __a	,    __a	,    __a		)     ->		int:







  """simple docstring"""





  lowerCamelCase__  ,					lowerCamelCase__:      int			  =len(__a		), len(grid[0]		)
  if (
      min(__a	,    __a		) < 0
      or row == row_length
      or col == col_length
      or (row, col) in visit
      or grid[row][col] == 1
  ):
    return 0
  if row == row_length - 1 and col == col_length - 1:
    return 1

  visit.add((row, col)		)

  lowerCamelCase__:      Dict			  =0
  count += depth_first_search(__a	,    row + 1	,    __a	,    __a		)
  count += depth_first_search(__a	,    row - 1	,    __a	,    __a		)
  count += depth_first_search(__a	,    __a	,    col + 1	,    __a		)
  count += depth_first_search(__a	,    __a	,    col - 1	,    __a		)

  visit.remove((row, col)		)
  return count


if __name__ == "__main__":
     import doctest

     doctest.testmod()






from collections import deque

from .hash_table import HashTable




class 					snake_case__						(       lowerCAmelCase_     ):






     """simple docstring"""


     def __init__(       self  :  Optional[Any], *_snake_case  :  Optional[Any], **_snake_case  :  List[Any]					)   ->Optional[int]:
            super().__init__(*_snake_case, **_snake_case					)






     def    lowercase_   (       self  :  Optional[Any], _snake_case  :  Tuple, _snake_case  :  Dict					)   ->Dict:
            snake_case__							:	int   	=	deque([]					) if self.values[key] is None else self.values[key]
            self.values[key].appendleft(_snake_case					)
            snake_case__							:	Dict   	=	self.values[key]






     def    lowercase_   (       self  :  Any					)   ->Optional[Any]:
            return (
                sum(self.charge_factor - len(_snake_case					) for slot in self.values					)
                / self.size_table
                * self.charge_factor
            )






     def    lowercase_   (       self  :  Union[str, Any], _snake_case  :  str, _snake_case  :  Optional[int]=None					)   ->Optional[Any]:
            if not (
                len(self.values[key]					) == self.charge_factor and self.values.count(_snake_case					) == 0
            ):
                   return key
            return super()._collision_resolution(_snake_case, _snake_case					)






