



from __future__ import annotations

__lowerCamelCase         =			list[tuple[int, int]]

__lowerCamelCase         =			[
    [0, 0, 0, 0, 0, 0, 0],
    [0, 1, 0, 0, 0, 0, 0],  # 0 are free path whereas 1's are obstacles
    [0, 0, 0, 0, 0, 0, 0],
    [0, 0, 1, 0, 0, 0, 0],
    [1, 0, 1, 0, 0, 0, 0],
    [0, 0, 0, 0, 0, 0, 0],
    [0, 0, 0, 0, 1, 0, 0],
]

__lowerCamelCase         =			([-1, 0], [0, -1], [1, 0], [0, 1])  # up, left, down, right


class   snake_case_ :




       """simple docstring"""






       def __init__(     self     ,lowercase     ,lowercase     ,lowercase     ,lowercase     ,lowercase     ,lowercase     ,):

             """simple docstring"""





             UpperCAmelCase_  :	List[str]				      =		pos_x
             UpperCAmelCase_  :	List[str]				      =		pos_y
             UpperCAmelCase_  :	List[Any]				      =		(pos_y, pos_x)
             UpperCAmelCase_  :	int				      =		goal_x
             UpperCAmelCase_  :	Optional[int]				      =		goal_y
             UpperCAmelCase_  :	Optional[int]				      =		g_cost
             UpperCAmelCase_  :	int				      =		parent
             UpperCAmelCase_  :	List[str]				      =		self.calculate_heuristic()



       def  A_   (     self):

             """simple docstring"""





             UpperCAmelCase_  :	Any				      =		abs(self.pos_x - self.goal_x)
             UpperCAmelCase_  :	int				      =		abs(self.pos_y - self.goal_y)
             return dx + dy



       def __lt__(     self     ,lowercase):

             """simple docstring"""





             return self.f_cost < other.f_cost


class   snake_case_ :




       """simple docstring"""






       def __init__(     self     ,lowercase     ,lowercase):

             """simple docstring"""





             UpperCAmelCase_  :	Union[str, Any]				      =		Node(start[1]     ,start[0]     ,goal[1]     ,goal[0]     ,0     ,lowercase)
             UpperCAmelCase_  :	Optional[int]				      =		Node(goal[1]     ,goal[0]     ,goal[1]     ,goal[0]     ,99999     ,lowercase)

             UpperCAmelCase_  :	List[str]				      =		[self.start]
             UpperCAmelCase_  :	list[Node]				      =		[]

             UpperCAmelCase_  :	Any				      =		False



       def  A_   (     self):

             """simple docstring"""





             while self.open_nodes:
                   # Open Nodes are sorted using __lt__
                   self.open_nodes.sort()
                   UpperCAmelCase_  :	Dict				      =		self.open_nodes.pop(0)

                   if current_node.pos == self.target.pos:
                         UpperCAmelCase_  :	List[Any]				      =		True
                         return self.retrace_path(lowercase)

                   self.closed_nodes.append(lowercase)
                   UpperCAmelCase_  :	Optional[int]				      =		self.get_successors(lowercase)

                   for child_node in successors:
                         if child_node in self.closed_nodes:
                               continue

                         if child_node not in self.open_nodes:
                               self.open_nodes.append(lowercase)
                         else:
                               # retrieve the best current path
                               UpperCAmelCase_  :	List[str]				      =		self.open_nodes.pop(self.open_nodes.index(lowercase))

                               if child_node.g_cost < better_node.g_cost:
                                     self.open_nodes.append(lowercase)
                               else:
                                     self.open_nodes.append(lowercase)

             if not self.reached:
                   return [self.start.pos]
             return None



       def  A_   (     self     ,lowercase):

             """simple docstring"""





             UpperCAmelCase_  :	Tuple				      =		[]
             for action in delta:
                   UpperCAmelCase_  :	List[Any]				      =		parent.pos_x + action[1]
                   UpperCAmelCase_  :	Any				      =		parent.pos_y + action[0]

                   if not (0 <= pos_x <= len(grid[0]) - 1 and 0 <= pos_y <= len(lowercase) - 1):
                         continue

                   if grid[pos_y][pos_x] != 0:
                         continue

                   successors.append(
                       Node(
                           lowercase     ,lowercase     ,self.target.pos_y     ,self.target.pos_x     ,parent.g_cost + 1     ,lowercase     ,))
             return successors



       def  A_   (     self     ,lowercase):

             """simple docstring"""





             UpperCAmelCase_  :	Union[str, Any]				      =		node
             UpperCAmelCase_  :	List[str]				      =		[]
             while current_node is not None:
                   path.append((current_node.pos_y, current_node.pos_x))
                   UpperCAmelCase_  :	int				      =		current_node.parent
             path.reverse()
             return path


if __name__ == "__main__":
   __lowerCamelCase         =			(0, 0)
   __lowerCamelCase         =			(len(grid) - 1, len(grid[0]) - 1)
   for elem in grid:
      print(elem)

   print('''------''')

   __lowerCamelCase         =			GreedyBestFirst(init, goal)
   __lowerCamelCase         =			greedy_bf.search()
   if path:
      for pos_x, pos_y in path:
         __lowerCamelCase         =			2

      for elem in grid:
         print(elem)





import logging

from transformers import PretrainedConfig


__lowerCamelCase         =			logging.getLogger(__name__)


__lowerCamelCase         =			{
    '''bertabs-finetuned-cnndm''': '''https://huggingface.co/remi/bertabs-finetuned-cnndm-extractive-abstractive-summarization/resolve/main/config.json''',
}


class   snake_case_ (lowercase__  ):




       """simple docstring"""






       _lowerCamelCase			    =				"""bertabs"""



       def __init__(     self     ,lowercase=30522     ,lowercase=512     ,lowercase=6     ,lowercase=512     ,lowercase=8     ,lowercase=512     ,lowercase=0.2     ,lowercase=6     ,lowercase=768     ,lowercase=8     ,lowercase=2048     ,lowercase=0.2     ,**lowercase     ,):

             """simple docstring"""





             super().__init__(**lowercase)

             UpperCAmelCase_  :	Any				      =		vocab_size
             UpperCAmelCase_  :	int				      =		max_pos

             UpperCAmelCase_  :	List[str]				      =		enc_layers
             UpperCAmelCase_  :	List[str]				      =		enc_hidden_size
             UpperCAmelCase_  :	Any				      =		enc_heads
             UpperCAmelCase_  :	Any				      =		enc_ff_size
             UpperCAmelCase_  :	Optional[int]				      =		enc_dropout

             UpperCAmelCase_  :	List[str]				      =		dec_layers
             UpperCAmelCase_  :	List[Any]				      =		dec_hidden_size
             UpperCAmelCase_  :	List[str]				      =		dec_heads
             UpperCAmelCase_  :	List[Any]				      =		dec_ff_size
             UpperCAmelCase_  :	List[str]				      =		dec_dropout
