class 		_lowerCamelCase		:  # Public class to implement a graph
    def __init__(  self , lowerCAmelCase , lowerCAmelCase , lowerCAmelCase   )       ->					None:
     SCREAMING_SNAKE_CASE__:   Tuple=      row
     SCREAMING_SNAKE_CASE__:   Union[str, Any]=      col
     SCREAMING_SNAKE_CASE__:   List[str]=      graph
    def 						UpperCamelCase_				(  self , lowerCAmelCase , lowerCAmelCase , lowerCAmelCase   )       ->					bool:
     return (
         0 <= i < self.ROW
         and 0 <= j < self.COL
         and not visited[i][j]
         and self.graph[i][j]
     )
    def 						UpperCamelCase_				(  self , lowerCAmelCase , lowerCAmelCase , lowerCAmelCase   )       ->					None:
     # Checking all 8 elements surrounding nth element
     SCREAMING_SNAKE_CASE__:   List[Any]=      [-1, -1, -1, 0, 0, 1, 1, 1]  # Coordinate order
     SCREAMING_SNAKE_CASE__:   Dict=      [-1, 0, 1, -1, 1, -1, 0, 1]
     SCREAMING_SNAKE_CASE__:   Any=      True  # Make those cells visited
     for k in range(8   ):
      if self.is_safe(i + row_nbr[k] , j + col_nbr[k] , lowerCAmelCase   ):
       self.diffs(i + row_nbr[k] , j + col_nbr[k] , lowerCAmelCase   )



    def 						UpperCamelCase_				(  self   )       ->					int:  # And finally, count all islands.
     SCREAMING_SNAKE_CASE__:   int=      [[False for j in range(self.COL   )] for i in range(self.ROW   )]
     SCREAMING_SNAKE_CASE__:   Optional[Any]=      0
     for i in range(self.ROW   ):
      for j in range(self.COL   ):
       if visited[i][j] is False and self.graph[i][j] == 1:
        self.diffs(lowerCAmelCase , lowerCAmelCase , lowerCAmelCase   )
        count += 1
     return count


from ..utils import DummyObject, requires_backends






class 		_lowerCamelCase		(   metaclass=UpperCamelCase_    ):
    __a  =      ["torch", "scipy"]
    def __init__(  self , *lowerCAmelCase , **lowerCAmelCase   )       ->					Any:
     requires_backends(self , ['''torch''', '''scipy''']   )
    @classmethod
    def 						UpperCamelCase_				(  cls , *lowerCAmelCase , **lowerCAmelCase   )       ->					List[str]:
     requires_backends(cls , ['''torch''', '''scipy''']   )



    @classmethod
    def 						UpperCamelCase_				(  cls , *lowerCAmelCase , **lowerCAmelCase   )       ->					Tuple:
     requires_backends(cls , ['''torch''', '''scipy''']   )

