

from queue import PriorityQueue
from typing import Any

import numpy as np


def     __SCREAMING_SNAKE_CASE   (SCREAMING_SNAKE_CASE__    ,						SCREAMING_SNAKE_CASE__    ,						SCREAMING_SNAKE_CASE__    ,						SCREAMING_SNAKE_CASE__    ,						SCREAMING_SNAKE_CASE__    ,						SCREAMING_SNAKE_CASE__    ,						SCREAMING_SNAKE_CASE__    ,						SCREAMING_SNAKE_CASE__    ,						SCREAMING_SNAKE_CASE__    ,						):
						for nxt, d in graph[v]:
												if nxt in visited_forward:
																		continue
												snake_case_  =      cst_fwd.get(SCREAMING_SNAKE_CASE__    ,						np.inf			)
												snake_case_  =      cst_fwd[v] + d
												if new_cost_f < old_cost_f:
																		queue.put((new_cost_f, nxt)			)
																		snake_case_  =      new_cost_f
																		snake_case_  =      v
												if nxt in visited_backward:
																		if cst_fwd[v] + d + cst_bwd[nxt] < shortest_distance:
																								snake_case_  =      cst_fwd[v] + d + cst_bwd[nxt]
						return shortest_distance


def     __SCREAMING_SNAKE_CASE   (SCREAMING_SNAKE_CASE__    ,						SCREAMING_SNAKE_CASE__    ,						SCREAMING_SNAKE_CASE__    ,						SCREAMING_SNAKE_CASE__			):
						snake_case_  =      -1

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

						snake_case_  =      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():
												snake_case_,       snake_case_  =      queue_forward.get()
												visited_forward.add(SCREAMING_SNAKE_CASE__			)

												snake_case_,       snake_case_  =      queue_backward.get()
												visited_backward.add(SCREAMING_SNAKE_CASE__			)

												snake_case_  =      pass_and_relaxation(
												    SCREAMING_SNAKE_CASE__    ,						SCREAMING_SNAKE_CASE__    ,						SCREAMING_SNAKE_CASE__    ,						SCREAMING_SNAKE_CASE__    ,						SCREAMING_SNAKE_CASE__    ,						SCREAMING_SNAKE_CASE__    ,						SCREAMING_SNAKE_CASE__    ,						SCREAMING_SNAKE_CASE__    ,						SCREAMING_SNAKE_CASE__    ,						)

												snake_case_  =      pass_and_relaxation(
												    SCREAMING_SNAKE_CASE__    ,						SCREAMING_SNAKE_CASE__    ,						SCREAMING_SNAKE_CASE__    ,						SCREAMING_SNAKE_CASE__    ,						SCREAMING_SNAKE_CASE__    ,						SCREAMING_SNAKE_CASE__    ,						SCREAMING_SNAKE_CASE__    ,						SCREAMING_SNAKE_CASE__    ,						SCREAMING_SNAKE_CASE__    ,						)

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

						if shortest_distance != np.inf:
												snake_case_  =      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()




import socket

def      __lowercase(						):


      """simple docstring"""



      lowerCamelCase             =		socket.socket(socket.AF_INET , socket.SOCK_STREAM			)
      lowerCamelCase             =		socket.gethostname()
      lowerCamelCase             =		12312

      sock.connect((host, port)			)
      sock.send(B"Hello server!"			)

      with open("Received_file" , "wb"			) as out_file:
            print("File opened"			)
            print("Receiving data..."			)
            while True:
                  lowerCamelCase             =		sock.recv(1024			)
                  if not data:
                        break
                  out_file.write(UpperCAmelCase__			)

      print("Successfully received the file"			)
      sock.close()
      print("Connection closed"			)


if __name__ == "__main__":
     main()