






from queue import PriorityQueue
from typing import Any

import numpy as np





def 		__UpperCAmelCase     (	a_				,	a_				,	a_				,	a_				,	a_				,	a_				,	a_				,	a_				,	a_				,	):
							for nxt, d in graph[v]:
														if nxt in visited_forward:
																					continue
														snake_case_           =				cst_fwd.get(a_				,	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 		__UpperCAmelCase     (	a_				,	a_				,	a_				,	a_):
							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(a_)

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

														snake_case_           =				pass_and_relaxation(
														    a_				,	a_				,	a_				,	a_				,	a_				,	a_				,	a_				,	a_				,	a_				,	)

														snake_case_           =				pass_and_relaxation(
														    a_				,	a_				,	a_				,	a_				,	a_				,	a_				,	a_				,	a_				,	a_				,	)

														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


lowercase    				=   {
    "B": [["C", 1]],
    "C": [["D", 1]],
    "D": [["F", 1]],
    "E": [["B", 1], ["G", 2]],
    "F": [],
    "G": [["F", 1]],
}
lowercase    				=   {
    "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()













lowercase    				=   {
    "A": ".-", "B": "-...", "C": "-.-.", "D": "-..", "E": ".", "F": "..-.", "G": "--.",
    "H": "....", "I": "..", "J": ".---", "K": "-.-", "L": ".-..", "M": "--", "N": "-.",
    "O": "---", "P": ".--.", "Q": "--.-", "R": ".-.", "S": "...", "T": "-", "U": "..-",
    "V": "...-", "W": ".--", "X": "-..-", "Y": "-.--", "Z": "--..", "1": ".----",
    "2": "..---", "3": "...--", "4": "....-", "5": ".....", "6": "-....", "7": "--...",
    "8": "---..", "9": "----.", "0": "-----", "&": ".-...", "@": ".--.-.",
    ":": "---...", ",": "--..--", ".": ".-.-.-", "'": ".----.", "\"": ".-..-.",
    "?": "..--..", "/": "-..-.", "=": "-...-", "+": ".-.-.", "-": "-....-",
    "(": "-.--.", ")": "-.--.-", "!": "-.-.--", " ": "/"
}  # Exclamation mark is not in ITU-R recommendation
# fmt: on
lowercase    				=   {value: key for key, value in MORSE_CODE_DICT.items()}





def 		__UpperCAmelCase     (	a_):
							return " ".join(MORSE_CODE_DICT[char] for char in message.upper())





def 		__UpperCAmelCase     (	a_):
							return "".join(REVERSE_DICT[char] for char in message.split())





def 		__UpperCAmelCase     (	):
							snake_case_           =				'Morse code here!'
							print(a_)
							snake_case_           =				encrypt(a_)
							print(a_)
							snake_case_           =				decrypt(a_)
							print(a_)


if __name__ == "__main__":
	main()





