






import os
from typing import Optional

import fsspec
from fsspec.archive import AbstractArchiveFileSystem
from fsspec.utils import DEFAULT_BLOCK_SIZE
class       _UpperCAmelCase					(       snake_case__	):

				"""simple docstring"""




				lowercase__											=       """"""
				lowercase__											=       (
				    None  # protocol passed in prefix to the url. ex: "gzip", for gzip://file.txt::http://foo.bar/file.txt.gz
				)
				lowercase__											=       None  # compression type in fsspec. ex: "gzip"
				lowercase__											=       None  # extension of the filename to strip. ex: "".gz" to get file.txt from file.txt.gz




				def __init__(     self						:    Tuple,  lowerCamelCase						:    Optional[Any] = "",  lowerCamelCase						:    List[str] = None,  lowerCamelCase						:    int = None,  **lowerCamelCase						:    str  ):

								'''simple docstring'''
								super().__init__(self,  **_A  )
								# always open as "rb" since fsspec can then use the TextIOWrapper to make it work for "r" mode
								lowercase__    =			fsspec.open(
								    _A,  mode='''rb''',  protocol=_A,  compression=self.compression,  client_kwargs={
								        '''requote_redirect_url''': False,  # see https://github.com/huggingface/datasets/pull/5459
								        '''trust_env''': True,  # Enable reading proxy env variables.
								        **(target_options or {}).pop('''client_kwargs''',  {}  ),  # To avoid issues if it was already passed.
								    },  **(target_options or {}),  )
								lowercase__    =			os.path.basename(self.file.path.split('''::'''  )[0]  )
								lowercase__    =			(
								    self.compressed_name[: self.compressed_name.rindex('''.'''  )]
								    if '''.''' in self.compressed_name
								    else self.compressed_name
								)
								lowercase__    =			None




				@classmethod
				def 				lowercase__   (     cls						:    List[str],  lowerCamelCase						:    int  ):

								'''simple docstring'''
								return super()._strip_protocol(_A  ).lstrip('''/'''  )




				def 				lowercase__   (     self						:    Any  ):

								'''simple docstring'''



								if self.dir_cache is None:
												lowercase__    =			{**self.file.fs.info(self.file.path  ), '''name''': self.uncompressed_name}
												lowercase__    =			{f['''name''']: f}




				def 				lowercase__   (     self						:    Union[str, Any],  lowerCamelCase						:    Union[str, Any]  ):

								'''simple docstring'''
								return self.file.open().read()




				def 				lowercase__   (     self						:    Any,  lowerCamelCase						:    Optional[int],  lowerCamelCase						:    List[str] = "rb",  lowerCamelCase						:    List[str]=None,  lowerCamelCase						:    List[Any]=True,  lowerCamelCase						:    str=None,  **lowerCamelCase						:    List[Any],  ):

								'''simple docstring'''
								lowercase__    =			self._strip_protocol(_A  )
								if mode != "rb":
												raise ValueError(F"""Tried to read with mode {mode} on file {self.file.path} opened with mode 'rb'"""  )
								return self.file.open()



class       _UpperCAmelCase					(       snake_case__	):

				"""simple docstring"""




				lowercase__											=       """bz2"""
				lowercase__											=       """bz2"""
				lowercase__											=       """.bz2"""



class       _UpperCAmelCase					(       snake_case__	):

				"""simple docstring"""




				lowercase__											=       """gzip"""
				lowercase__											=       """gzip"""
				lowercase__											=       """.gz"""



class       _UpperCAmelCase					(       snake_case__	):

				"""simple docstring"""




				lowercase__											=       """lz4"""
				lowercase__											=       """lz4"""
				lowercase__											=       """.lz4"""



class       _UpperCAmelCase					(       snake_case__	):

				"""simple docstring"""




				lowercase__											=       """xz"""
				lowercase__											=       """xz"""
				lowercase__											=       """.xz"""



class       _UpperCAmelCase					(       snake_case__	):

				"""simple docstring"""




				lowercase__											=       """zstd"""
				lowercase__											=       """zstd"""
				lowercase__											=       """.zst"""




				def __init__(     self						:    Tuple,  lowerCamelCase						:    Tuple,  lowerCamelCase						:    Optional[int] = "rb",  lowerCamelCase						:    List[Any] = None,  lowerCamelCase						:    Optional[int] = None,  lowerCamelCase						:    Tuple = DEFAULT_BLOCK_SIZE,  **lowerCamelCase						:    int,  ):

								'''simple docstring'''
								super().__init__(
								    fo=_A,  mode=_A,  target_protocol=_A,  target_options=_A,  block_size=_A,  **_A,  )
								# We need to wrap the zstd decompressor to avoid this error in fsspec==2021.7.0 and zstandard==0.15.2:
								#
								# File "/Users/user/.virtualenvs/hf-datasets/lib/python3.7/site-packages/fsspec/core.py", line 145, in open
								#     out.close = close
								# AttributeError: 'zstd.ZstdDecompressionReader' object attribute 'close' is read-only
								#
								# see https://github.com/intake/filesystem_spec/issues/725
								lowercase__    =			self.file.__enter__
								class       _UpperCAmelCase					:

												"""simple docstring"""




												def __init__(     self						:    Any,  lowerCamelCase						:    List[Any]  ):

																'''simple docstring'''
																lowercase__    =			file_




												def __enter__(     self						:    Union[str, Any]  ):

																'''simple docstring'''
																self._file.__enter__()
																return self




												def __exit__(     self						:    Optional[int],  *lowerCamelCase						:    Optional[Any],  **lowerCamelCase						:    int  ):

																'''simple docstring'''
																self._file.__exit__(*_A,  **_A  )




												def __iter__(     self						:    List[str]  ):

																'''simple docstring'''
																return iter(self._file  )




												def 				lowercase__   (     self						:    Tuple  ):

																'''simple docstring'''
																return next(self._file  )




												def __getattr__(     self						:    Any,  lowerCamelCase						:    int  ):

																'''simple docstring'''
																return getattr(self._file,  _A  )

								def fixed_enter(*lowerCamelCase						:    Union[str, Any],  **lowerCamelCase						:    Optional[Any]  ):
												return WrappedFile(_enter(*_A,  **_A  )  )

								lowercase__    =			fixed_enter










from queue import PriorityQueue
from typing import Any

import numpy as np







def 	_a      (						SCREAMING_SNAKE_CASE_							:				dict      ,      SCREAMING_SNAKE_CASE_							:				str      ,      SCREAMING_SNAKE_CASE_							:				set      ,      SCREAMING_SNAKE_CASE_							:				set      ,      SCREAMING_SNAKE_CASE_							:				dict      ,      SCREAMING_SNAKE_CASE_							:				dict      ,      SCREAMING_SNAKE_CASE_							:				PriorityQueue      ,      SCREAMING_SNAKE_CASE_							:				dict      ,      SCREAMING_SNAKE_CASE_							:				float | int      ,      ):
					for nxt, d in graph[v]:
										if nxt in visited_forward:
															continue
										__lowerCAmelCase				   =       cst_fwd.get(SCREAMING_SNAKE_CASE_      ,      np.inf     )
										__lowerCAmelCase				   =       cst_fwd[v] + d
										if new_cost_f < old_cost_f:
															queue.put((new_cost_f, nxt)     )
															__lowerCAmelCase				   =       new_cost_f
															__lowerCAmelCase				   =       v
										if nxt in visited_backward:
															if cst_fwd[v] + d + cst_bwd[nxt] < shortest_distance:
																				__lowerCAmelCase				   =       cst_fwd[v] + d + cst_bwd[nxt]
					return shortest_distance







def 	_a      (						SCREAMING_SNAKE_CASE_							:				str      ,      SCREAMING_SNAKE_CASE_							:				str      ,      SCREAMING_SNAKE_CASE_							:				dict      ,      SCREAMING_SNAKE_CASE_							:				dict     ):
					__lowerCAmelCase				   =       -1

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

					__lowerCAmelCase				   =       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():
										__lowerCAmelCase   ,							__lowerCAmelCase				   =       queue_forward.get()
										visited_forward.add(SCREAMING_SNAKE_CASE_     )

										__lowerCAmelCase   ,							__lowerCAmelCase				   =       queue_backward.get()
										visited_backward.add(SCREAMING_SNAKE_CASE_     )

										__lowerCAmelCase				   =       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_      ,      )

										__lowerCAmelCase				   =       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:
										__lowerCAmelCase				   =       shortest_distance
					return shortest_path_distance


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




