

'''simple docstring'''







from typing import List

from .keymap import KEYMAP, get_character
def       UpperCAmelCase__    (      UpperCAmelCase__				)			->			Any:

       def decorator(UpperCAmelCase__				):
              A_						=      getattr(__SCREAMING_SNAKE_CASE,       """handle_key""",       []				)
              handle += [key]
              setattr(__SCREAMING_SNAKE_CASE,       """handle_key""",       __SCREAMING_SNAKE_CASE				)
              return func

       return decorator
def       UpperCAmelCase__    (      *UpperCAmelCase__				)			->			str:

       def decorator(UpperCAmelCase__				):
              A_						=      getattr(__SCREAMING_SNAKE_CASE,       """handle_key""",       []				)
              handle += keys
              setattr(__SCREAMING_SNAKE_CASE,       """handle_key""",       __SCREAMING_SNAKE_CASE				)
              return func

       return decorator


class 					A__      (      lowercase__			):



    def __new__(					cls		,				UpperCamelCase__		,				UpperCamelCase__		,				UpperCamelCase__       )						->      Optional[int]:





           '''simple docstring'''
           A_						=      super().__new__(cls		,				UpperCamelCase__		,				UpperCamelCase__		,				UpperCamelCase__       )
           if not hasattr(UpperCamelCase__		,				"""key_handler"""       ):
                  setattr(UpperCamelCase__		,				"""key_handler"""		,				{}       )
           setattr(UpperCamelCase__		,				"""handle_input"""		,				KeyHandler.handle_input       )

           for value in attrs.values():
                  A_						=      getattr(UpperCamelCase__		,				"""handle_key"""		,				[]       )
                  for key in handled_keys:
                         A_						=      value
           return new_cls







    @staticmethod
    def 					snake_case_			(					cls       )						->      List[str]:





           '''simple docstring'''
           A_						=      get_character()
           if char != KEYMAP["undefined"]:
                  A_						=      ord(UpperCamelCase__       )
           A_						=      cls.key_handler.get(UpperCamelCase__       )
           if handler:
                  A_						=      char
                  return handler(cls       )
           else:
                  return None
def       UpperCAmelCase__    (      cls				)			->			str:
       return KeyHandler(cls.__name__,       cls.__bases__,       cls.__dict__.copy()				)



'''simple docstring'''







from queue import PriorityQueue
from typing import Any

import numpy as np
def       UpperCAmelCase__    (      UpperCAmelCase__,       UpperCAmelCase__,       UpperCAmelCase__,       UpperCAmelCase__,       UpperCAmelCase__,       UpperCAmelCase__,       UpperCAmelCase__,       UpperCAmelCase__,       UpperCAmelCase__,       )			->			float | int:
       for nxt, d in graph[v]:
              if nxt in visited_forward:
                     continue
              A_						=      cst_fwd.get(UpperCAmelCase__,       np.inf				)
              A_						=      cst_fwd[v] + d
              if new_cost_f < old_cost_f:
                     queue.put((new_cost_f, nxt)				)
                     A_						=      new_cost_f
                     A_						=      v
              if nxt in visited_backward:
                     if cst_fwd[v] + d + cst_bwd[nxt] < shortest_distance:
                            A_						=      cst_fwd[v] + d + cst_bwd[nxt]
       return shortest_distance
def       UpperCAmelCase__    (      UpperCAmelCase__,       UpperCAmelCase__,       UpperCAmelCase__,       UpperCAmelCase__				)			->			int:
       A_						=      -1

       A_						=      set()
       A_						=      set()
       A_						=      {source: 0}
       A_						=      {destination: 0}
       A_						=      {source: None}
       A_						=      {destination: None}
       A_						=      PriorityQueue()
       A_						=      PriorityQueue()

       A_						=      np.inf

       queue_forward.put((0, source)				)
       queue_backward.put((0, destination)				)

       if source == destination:
              return 0

       while not queue_forward.empty() and not queue_backward.empty():
              A_					,			A_						=      queue_forward.get()
              visited_forward.add(UpperCAmelCase__				)

              A_					,			A_						=      queue_backward.get()
              visited_backward.add(UpperCAmelCase__				)

              A_						=      pass_and_relaxation(
                  UpperCAmelCase__,       UpperCAmelCase__,       UpperCAmelCase__,       UpperCAmelCase__,       UpperCAmelCase__,       UpperCAmelCase__,       UpperCAmelCase__,       UpperCAmelCase__,       UpperCAmelCase__,       )

              A_						=      pass_and_relaxation(
                  UpperCAmelCase__,       UpperCAmelCase__,       UpperCAmelCase__,       UpperCAmelCase__,       UpperCAmelCase__,       UpperCAmelCase__,       UpperCAmelCase__,       UpperCAmelCase__,       UpperCAmelCase__,       )

              if cst_fwd[v_fwd] + cst_bwd[v_bwd] >= shortest_distance:
                     break

       if shortest_distance != np.inf:
              A_						=      shortest_distance
       return shortest_path_distance


__lowerCamelCase		       =    {
    '''B''': [['''C''', 1]],
    '''C''': [['''D''', 1]],
    '''D''': [['''F''', 1]],
    '''E''': [['''B''', 1], ['''G''', 2]],
    '''F''': [],
    '''G''': [['''F''', 1]],
}
__lowerCamelCase		       =    {
    '''B''': [['''E''', 1]],
    '''C''': [['''B''', 1]],
    '''D''': [['''C''', 1]],
    '''F''': [['''D''', 1], ['''G''', 1]],
    '''E''': [[None, np.inf]],
    '''G''': [['''E''', 2]],
}

if __name__ == "__main__":
      import doctest

      doctest.testmod()
