





import numpy as np
class     UpperCamelCase__					:






		'''simple docstring'''






		def __init__(							self  )       -> List[str]:






									"""simple docstring"""
									lowercase_	:   Optional[Any]  				=     (0, 0)
									lowercase_	:   int  				=     None
									lowercase_	:   List[Any]  				=     0
									lowercase_	:   Optional[int]  				=     0
									lowercase_	:   Optional[Any]  				=     0






		def __eq__(							self,   snake_case__  )       -> List[str]:






									"""simple docstring"""
									return self.position == cell.position






		def 						snake_case__				(							self  )       -> int:






									"""simple docstring"""
									print(self.position  )




class     UpperCamelCase__					:






		'''simple docstring'''






		def __init__(							self,   snake_case__=(5, 5)  )       -> Any:






									"""simple docstring"""
									lowercase_	:   List[Any]  				=     np.zeros(snake_case__  )
									lowercase_	:   Tuple  				=     world_size[0]
									lowercase_	:   Any  				=     world_size[1]






		def 						snake_case__				(							self  )       -> Optional[Any]:






									"""simple docstring"""
									print(self.w  )






		def 						snake_case__				(							self,   snake_case__  )       -> Dict:






									"""simple docstring"""
									lowercase_	:   Union[str, Any]  				=     [
									    (-1, -1),
									    (-1, 0),
									    (-1, 1),
									    (0, -1),
									    (0, 1),
									    (1, -1),
									    (1, 0),
									    (1, 1),
									]
									lowercase_	:   List[Any]  				=     cell.position[0]
									lowercase_	:   Tuple  				=     cell.position[1]
									lowercase_	:   List[Any]  				=     []
									for n in neughbour_cord:
																lowercase_	:   Optional[Any]  				=     current_x + n[0]
																lowercase_	:   Optional[int]  				=     current_y + n[1]
																if 0 <= x < self.world_x_limit and 0 <= y < self.world_y_limit:
																							lowercase_	:   str  				=     Cell()
																							lowercase_	:   Optional[int]  				=     (x, y)
																							lowercase_	:   int  				=     cell
																							neighbours.append(snake_case__  )
									return neighbours





def  __magic_name__  (				lowercase				,       lowercase				,       lowercase				)				-> int:

							"""simple docstring"""



							lowercase_	:   Dict  				=     []
							lowercase_	:   Dict  				=     []
							_open.append(lowercase				)

							while _open:
														lowercase_	:   int  				=     np.argmin([n.f for n in _open]				)
														lowercase_	:   int  				=     _open[min_f]
														_closed.append(_open.pop(lowercase				)				)
														if current == goal:
																					break
														for n in world.get_neigbours(lowercase				):
																					for c in _closed:
																												if c == n:
																																			continue
																					lowercase_	:   Optional[int]  				=     current.g + 1
																					lowercase_				,		lowercase_	:   Dict  				=     n.position
																					lowercase_				,		lowercase_	:   int  				=     goal.position
																					lowercase_	:   str  				=     (ya - ya) ** 2 + (xa - xa) ** 2
																					lowercase_	:   Tuple  				=     n.h + n.g

																					for c in _open:
																												if c == n and c.f < n.f:
																																			continue
																					_open.append(lowercase				)
							lowercase_	:   Optional[int]  				=     []
							while current.parent is not None:
														path.append(current.position				)
														lowercase_	:   Dict  				=     current.parent
							path.append(current.position				)
							return path[::-1]


if __name__ == "__main__":
							UpperCAmelCase_							=				Gridworld()
							# Start position and goal
							UpperCAmelCase_							=				Cell()
							UpperCAmelCase_							=				(0, 0)
							UpperCAmelCase_							=				Cell()
							UpperCAmelCase_							=				(4, 4)
							print(F'''path from {start.position} to {goal.position}''')
							UpperCAmelCase_							=				astar(world, start, goal)
							#   Just for visual reasons.
							for i in s:
														UpperCAmelCase_							=				1
							print(world.w)






UpperCAmelCase_							=				{"""a""": ["""c""", """b"""], """b""": ["""d""", """e"""], """c""": [], """d""": [], """e""": []}
UpperCAmelCase_							=				["""a""", """b""", """c""", """d""", """e"""]





def  __magic_name__  (				lowercase				,       lowercase				,       lowercase				)				-> Union[str, Any]:

							"""simple docstring"""



							lowercase_	:   Tuple  				=     start
							# add current to visited
							visited.append(lowercase				)
							lowercase_	:   Any  				=     edges[current]
							for neighbor in neighbors:
														# if neighbor not in visited, visit
														if neighbor not in visited:
																					lowercase_	:   List[str]  				=     topological_sort(lowercase				,       lowercase				,       lowercase				)
    # if all neighbors visited add current to sort
							sort.append(lowercase				)
							# if all vertices haven't been visited select a new one to visit
							if len(lowercase				) != len(lowercase				):
														for vertice in vertices:
																					if vertice not in visited:
																												lowercase_	:   Optional[Any]  				=     topological_sort(lowercase				,       lowercase				,       lowercase				)
    # return sort
							return sort


if __name__ == "__main__":
							UpperCAmelCase_							=				topological_sort("""a""", [], [])
							print(sort)