


"""simple docstring"""

from __future__ import annotations

UpperCAmelCase__  							=list[tuple[int, int]]

UpperCAmelCase__  							=[
    [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],
]

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





class    lowerCamelCase__						:
      def __init__(		self	:	Optional[Any]      ,       A_	:	int      ,       A_	:	int      ,       A_	:	int      ,       A_	:	int      ,       A_	:	float      ,       A_	:	Node | None      ,       ):






       '''simple docstring'''


       __lowercase									=	pos_x
       __lowercase									=	pos_y
       __lowercase									=	(pos_y, pos_x)
       __lowercase									=	goal_x
       __lowercase									=	goal_y
       __lowercase									=	g_cost
       __lowercase									=	parent
       __lowercase									=	self.calculate_heuristic()
      def SCREAMING_SNAKE_CASE_	(		self	:	List[str]							):






       '''simple docstring'''


       __lowercase									=	abs(self.pos_x - self.goal_x							)
       __lowercase									=	abs(self.pos_y - self.goal_y							)
       return dx + dy






      def __lt__(		self	:	Any      ,       A_	:	Tuple							):






       '''simple docstring'''


       return self.f_cost < other.f_cost






class    lowerCamelCase__						:
      def __init__(		self	:	List[str]      ,       A_	:	tuple[int, int]      ,       A_	:	tuple[int, int]							):






       '''simple docstring'''


       __lowercase									=	Node(start[1]      ,       start[0]      ,       goal[1]      ,       goal[0]      ,       0      ,       A_							)
       __lowercase									=	Node(goal[1]      ,       goal[0]      ,       goal[1]      ,       goal[0]      ,       9_9_9_9_9      ,       A_							)

       __lowercase									=	[self.start]
       __lowercase									=	[]

       __lowercase									=	False
      def SCREAMING_SNAKE_CASE_	(		self	:	Optional[int]							):






       '''simple docstring'''


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

        if current_node.pos == self.target.pos:
         __lowercase									=	True
         return self.retrace_path(A_							)

        self.closed_nodes.append(A_							)
        __lowercase									=	self.get_successors(A_							)

        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(A_							)
         else:
          # retrieve the best current path
          __lowercase									=	self.open_nodes.pop(self.open_nodes.index(A_							)							)

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

       if not self.reached:
        return [self.start.pos]
       return None
      def SCREAMING_SNAKE_CASE_	(		self	:	Any      ,       A_	:	Node							):






       '''simple docstring'''


       __lowercase									=	[]
       for action in delta:
        __lowercase									=	parent.pos_x + action[1]
        __lowercase									=	parent.pos_y + action[0]

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

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

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






      def SCREAMING_SNAKE_CASE_	(		self	:	List[str]      ,       A_	:	Node | None							):






       '''simple docstring'''


       __lowercase									=	node
       __lowercase									=	[]
       while current_node is not None:
        path.append((current_node.pos_y, current_node.pos_x)							)
        __lowercase									=	current_node.parent
       path.reverse()
       return path


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

       print("------")

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

              for elem in grid:
                     print(elem)




"""simple docstring"""

from __future__ import annotations


def lowerCAmelCase_      (				UpperCamelCase__	: list[float] ):






 """simple docstring"""







 if len(UpperCamelCase__ ) < 2:
  raise ValueError("""Monogons and Digons are not polygons in the Euclidean space""" )
 if any(i <= 0 for i in nums ):
  raise ValueError("""All values must be greater than 0""" )
 __lowercase									=	nums.copy()
 copy_nums.sort()
 return copy_nums[-1] < sum(copy_nums[:-1] )


if __name__ == "__main__":
       import doctest

       doctest.testmod()
