





"""simple docstring"""
import json
import os
from functools import lru_cache
from typing import TYPE_CHECKING, List, Optional, Tuple

import regex as re

from ...tokenization_utils import AddedToken, PreTrainedTokenizer
from ...utils import logging


if TYPE_CHECKING:
       from transformers.pipelines.conversational import Conversation

__UpperCamelCase    :	Optional[Any]						=     logging.get_logger(__name__)

__UpperCamelCase    :	List[Any]						=     {
    '''vocab_file''': '''vocab.json''',
    '''merges_file''': '''merges.txt''',
}

__UpperCamelCase    :	List[Any]						=     {
    '''vocab_file''': {
        '''gpt2''': '''https://huggingface.co/gpt2/resolve/main/vocab.json''',
        '''gpt2-medium''': '''https://huggingface.co/gpt2-medium/resolve/main/vocab.json''',
        '''gpt2-large''': '''https://huggingface.co/gpt2-large/resolve/main/vocab.json''',
        '''gpt2-xl''': '''https://huggingface.co/gpt2-xl/resolve/main/vocab.json''',
        '''distilgpt2''': '''https://huggingface.co/distilgpt2/resolve/main/vocab.json''',
    },
    '''merges_file''': {
        '''gpt2''': '''https://huggingface.co/gpt2/resolve/main/merges.txt''',
        '''gpt2-medium''': '''https://huggingface.co/gpt2-medium/resolve/main/merges.txt''',
        '''gpt2-large''': '''https://huggingface.co/gpt2-large/resolve/main/merges.txt''',
        '''gpt2-xl''': '''https://huggingface.co/gpt2-xl/resolve/main/merges.txt''',
        '''distilgpt2''': '''https://huggingface.co/distilgpt2/resolve/main/merges.txt''',
    },
}

__UpperCamelCase    :	int						=     {
    '''gpt2''': 1024,
    '''gpt2-medium''': 1024,
    '''gpt2-large''': 1024,
    '''gpt2-xl''': 1024,
    '''distilgpt2''': 1024,
}

@lru_cache()
def 		_SCREAMING_SNAKE_CASE ():
 lowerCAmelCase													=   (
     list(range(ord('!' )     ,    ord('~' ) + 1 ) ) + list(range(ord('¡' )     ,    ord('¬' ) + 1 ) ) + list(range(ord('®' )     ,    ord('ÿ' ) + 1 ) )
 )
 lowerCAmelCase													=   bs[:]
 lowerCAmelCase													=   0
 for b in range(2**8 ):
  if b not in bs:
   bs.append(_UpperCAmelCase )
   cs.append(2**8 + n )
   n += 1
 lowerCAmelCase													=   [chr(_UpperCAmelCase ) for n in cs]
 return dict(zip(_UpperCAmelCase     ,    _UpperCAmelCase ) )

def 		_SCREAMING_SNAKE_CASE (_UpperCAmelCase				:						Tuple ):
 lowerCAmelCase													=   set()
 lowerCAmelCase													=   word[0]
 for char in word[1:]:
  pairs.add((prev_char, char) )
  lowerCAmelCase													=   char
 return pairs







class 			a       (      a__     ):
 snake_case__								=					VOCAB_FILES_NAMES
 snake_case__								=					PRETRAINED_VOCAB_FILES_MAP
 snake_case__								=					PRETRAINED_POSITIONAL_EMBEDDINGS_SIZES
 snake_case__								=					['''input_ids''', '''attention_mask''']



 def __init__(    self							,					_snake_case							,					_snake_case							,					_snake_case="replace"							,					_snake_case="<|endoftext|>"							,					_snake_case="<|endoftext|>"							,					_snake_case="<|endoftext|>"							,					_snake_case=None							,					_snake_case=False							,					_snake_case=False							,					**_snake_case							,					):







  """simple docstring"""






  lowerCAmelCase													=   AddedToken(_snake_case							,					lstrip=_snake_case							,					rstrip=_snake_case    ) if isinstance(_snake_case							,					_snake_case    ) else bos_token
  lowerCAmelCase													=   AddedToken(_snake_case							,					lstrip=_snake_case							,					rstrip=_snake_case    ) if isinstance(_snake_case							,					_snake_case    ) else eos_token
  lowerCAmelCase													=   AddedToken(_snake_case							,					lstrip=_snake_case							,					rstrip=_snake_case    ) if isinstance(_snake_case							,					_snake_case    ) else unk_token
  lowerCAmelCase													=   AddedToken(_snake_case							,					lstrip=_snake_case							,					rstrip=_snake_case    ) if isinstance(_snake_case							,					_snake_case    ) else pad_token
  super().__init__(
      errors=_snake_case							,					unk_token=_snake_case							,					bos_token=_snake_case							,					eos_token=_snake_case							,					pad_token=_snake_case							,					add_prefix_space=_snake_case							,					add_bos_token=_snake_case							,					**_snake_case							,					)
  lowerCAmelCase													=   add_bos_token

  with open(_snake_case							,					encoding='utf-8'    ) as vocab_handle:
   lowerCAmelCase													=   json.load(_snake_case    )
  lowerCAmelCase													=   {v: k for k, v in self.encoder.items()}
  lowerCAmelCase													=   errors  # how to handle errors in decoding
  lowerCAmelCase													=   bytes_to_unicode()
  lowerCAmelCase													=   {v: k for k, v in self.byte_encoder.items()}
  with open(_snake_case							,					encoding='utf-8'    ) as merges_handle:
   lowerCAmelCase													=   merges_handle.read().split('\n'    )[1:-1]
  lowerCAmelCase													=   [tuple(merge.split()    ) for merge in bpe_merges]
  lowerCAmelCase													=   dict(zip(_snake_case							,					range(len(_snake_case    )    )    )    )
  lowerCAmelCase													=   {}
  lowerCAmelCase													=   add_prefix_space

  # Should have added re.IGNORECASE so BPE merges can happen for capitalized versions of contractions
  lowerCAmelCase													=   re.compile(r'\'s|\'t|\'re|\'ve|\'m|\'ll|\'d| ?\p{L}+| ?\p{N}+| ?[^\s\p{L}\p{N}]+|\s+(?!\S)|\s+'    )



 @property
 def       UpperCamelCase__     (    self    ):







  """simple docstring"""






  return len(self.encoder    )



 def       UpperCamelCase__     (    self    ):







  """simple docstring"""






  return dict(self.encoder							,					**self.added_tokens_encoder    )



 def       UpperCamelCase__     (    self							,					_snake_case    ):







  """simple docstring"""






  if token in self.cache:
   return self.cache[token]
  lowerCAmelCase													=   tuple(_snake_case    )
  lowerCAmelCase													=   get_pairs(_snake_case    )

  if not pairs:
   return token

  while True:
   lowerCAmelCase													=   min(_snake_case							,					key=lambda _snake_case    : self.bpe_ranks.get(_snake_case							,					float('inf'    )    )    )
   if bigram not in self.bpe_ranks:
    break
   lowerCAmelCase							,lowerCAmelCase													=   bigram
   lowerCAmelCase													=   []
   lowerCAmelCase													=   0
   while i < len(_snake_case    ):
    try:
     lowerCAmelCase													=   word.index(_snake_case							,					_snake_case    )
    except ValueError:
     new_word.extend(word[i:]    )
     break
    else:
     new_word.extend(word[i:j]    )
     lowerCAmelCase													=   j

    if word[i] == first and i < len(_snake_case    ) - 1 and word[i + 1] == second:
     new_word.append(first + second    )
     i += 2
    else:
     new_word.append(word[i]    )
     i += 1
   lowerCAmelCase													=   tuple(_snake_case    )
   lowerCAmelCase													=   new_word
   if len(_snake_case    ) == 1:
    break
   else:
    lowerCAmelCase													=   get_pairs(_snake_case    )
  lowerCAmelCase													=   ' '.join(_snake_case    )
  lowerCAmelCase													=   word
  return word



 def       UpperCamelCase__     (    self							,					_snake_case							,					_snake_case=None    ):







  """simple docstring"""






  if self.add_bos_token:
   lowerCAmelCase													=   [self.bos_token_id]
  else:
   lowerCAmelCase													=   []

  lowerCAmelCase													=   bos_token_ids + token_ids_a

  if token_ids_a is None:
   return output

  return output + bos_token_ids + token_ids_a



 def       UpperCamelCase__     (    self							,					_snake_case							,					_snake_case = None							,					_snake_case = False    ):







  """simple docstring"""






  if already_has_special_tokens:
   return super().get_special_tokens_mask(
       token_ids_a=_snake_case							,					token_ids_a=_snake_case							,					already_has_special_tokens=_snake_case    )

  if not self.add_bos_token:
   return super().get_special_tokens_mask(
       token_ids_a=_snake_case							,					token_ids_a=_snake_case							,					already_has_special_tokens=_snake_case    )

  if token_ids_a is None:
   return [1] + ([0] * len(_snake_case    ))
  return [1] + ([0] * len(_snake_case    )) + [1] + ([0] * len(_snake_case    ))



 def       UpperCamelCase__     (    self							,					_snake_case    ):







  """simple docstring"""






  lowerCAmelCase													=   []
  for token in re.findall(self.pat							,					_snake_case    ):
   lowerCAmelCase													=   ''.join(
       self.byte_encoder[b] for b in token.encode('utf-8'    )    )  # Maps all our bytes to unicode strings, avoiding control tokens of the BPE (spaces in our case)
   bpe_tokens.extend(bpe_token for bpe_token in self.bpe(_snake_case    ).split(' '    )    )
  return bpe_tokens



 def       UpperCamelCase__     (    self							,					_snake_case    ):







  """simple docstring"""






  return self.encoder.get(_snake_case							,					self.encoder.get(self.unk_token    )    )



 def       UpperCamelCase__     (    self							,					_snake_case    ):







  """simple docstring"""






  return self.decoder.get(_snake_case    )



 def       UpperCamelCase__     (    self							,					_snake_case    ):







  """simple docstring"""






  lowerCAmelCase													=   ''.join(_snake_case    )
  lowerCAmelCase													=   bytearray([self.byte_decoder[c] for c in text]    ).decode('utf-8'							,					errors=self.errors    )
  return text



 def       UpperCamelCase__     (    self							,					_snake_case							,					_snake_case = None    ):







  """simple docstring"""






  if not os.path.isdir(_snake_case    ):
   logger.error(F'Vocabulary path ({save_directory}) should be a directory'    )
   return
  lowerCAmelCase													=   os.path.join(
      _snake_case							,					(filename_prefix + '-' if filename_prefix else '') + VOCAB_FILES_NAMES['vocab_file']    )
  lowerCAmelCase													=   os.path.join(
      _snake_case							,					(filename_prefix + '-' if filename_prefix else '') + VOCAB_FILES_NAMES['merges_file']    )

  with open(_snake_case							,					'w'							,					encoding='utf-8'    ) as f:
   f.write(json.dumps(self.encoder							,					indent=2							,					sort_keys=_snake_case							,					ensure_ascii=_snake_case    ) + '\n'    )

  lowerCAmelCase													=   0
  with open(_snake_case							,					'w'							,					encoding='utf-8'    ) as writer:
   writer.write('#version: 0.2\n'    )
   for bpe_tokens, token_index in sorted(self.bpe_ranks.items()							,					key=lambda _snake_case    : kv[1]    ):
    if index != token_index:
     logger.warning(
         F'Saving vocabulary to {merge_file}: BPE merge indices are not consecutive.'
         ' Please check that the tokenizer is not corrupted!'    )
     lowerCAmelCase													=   token_index
    writer.write(' '.join(_snake_case    ) + '\n'    )
    index += 1

  return vocab_file, merge_file



 def       UpperCamelCase__     (    self							,					_snake_case							,					_snake_case=False							,					**_snake_case    ):







  """simple docstring"""






  lowerCAmelCase													=   kwargs.pop('add_prefix_space'							,					self.add_prefix_space    )
  if is_split_into_words or add_prefix_space:
   lowerCAmelCase													=   ' ' + text
  return (text, kwargs)



 def       UpperCamelCase__     (    self							,					_snake_case    ):







  """simple docstring"""






  lowerCAmelCase													=   []
  for is_user, text in conversation.iter_texts():
   input_ids.extend(self.encode(_snake_case							,					add_special_tokens=_snake_case    ) + [self.eos_token_id]    )
  if len(_snake_case    ) > self.model_max_length:
   lowerCAmelCase													=   input_ids[-self.model_max_length :]
  return input_ids












"""simple docstring"""
import math
import sys







class 			a       :



 def __init__(    self    ):







  """simple docstring"""






  lowerCAmelCase													=   0
  lowerCAmelCase													=   []
  lowerCAmelCase													=   {}  # To store the pos of node in array



 def       UpperCamelCase__     (    self    ):







  """simple docstring"""






  return self.cur_size == 0



 def       UpperCamelCase__     (    self							,					_snake_case    ):







  """simple docstring"""






  lowerCAmelCase													=   self.left(_snake_case    )
  lowerCAmelCase													=   self.right(_snake_case    )
  if lc < self.cur_size and self.array(_snake_case    )[0] < self.array(_snake_case    )[0]:
   lowerCAmelCase													=   lc
  else:
   lowerCAmelCase													=   idx
  if rc < self.cur_size and self.array(_snake_case    )[0] < self.array(_snake_case    )[0]:
   lowerCAmelCase													=   rc
  if smallest != idx:
   self.swap(_snake_case							,					_snake_case    )
   self.min_heapify(_snake_case    )



 def       UpperCamelCase__     (    self							,					_snake_case    ):







  """simple docstring"""






  lowerCAmelCase													=   self.cur_size
  self.cur_size += 1
  self.array.append((sys.maxsize, tup[1])    )
  self.decrease_key((sys.maxsize, tup[1])							,					tup[0]    )



 def       UpperCamelCase__     (    self    ):







  """simple docstring"""






  lowerCAmelCase													=   self.array[0][1]
  lowerCAmelCase													=   self.array[self.cur_size - 1]
  self.cur_size -= 1
  self.min_heapify(1    )
  del self.pos[min_node]
  return min_node



 def       UpperCamelCase__     (    self							,					_snake_case    ):







  """simple docstring"""






  return 2 * i + 1



 def       UpperCamelCase__     (    self							,					_snake_case    ):







  """simple docstring"""






  return 2 * i + 2



 def       UpperCamelCase__     (    self							,					_snake_case    ):







  """simple docstring"""






  return math.floor(i / 2    )



 def       UpperCamelCase__     (    self							,					_snake_case							,					_snake_case    ):







  """simple docstring"""






  lowerCAmelCase													=   j
  lowerCAmelCase													=   i
  lowerCAmelCase													=   self.array[i]
  lowerCAmelCase													=   self.array[j]
  lowerCAmelCase													=   temp



 def       UpperCamelCase__     (    self							,					_snake_case							,					_snake_case    ):







  """simple docstring"""






  lowerCAmelCase													=   self.pos[tup[1]]
  # assuming the new_d is atmost old_d
  lowerCAmelCase													=   (new_d, tup[1])
  while idx > 0 and self.array[self.par(_snake_case    )][0] > self.array[idx][0]:
   self.swap(_snake_case							,					self.par(_snake_case    )    )
   lowerCAmelCase													=   self.par(_snake_case    )







class 			a       :



 def __init__(    self							,					_snake_case    ):







  """simple docstring"""






  lowerCAmelCase													=   {}  # To store graph: u -> (v,w)
  lowerCAmelCase													=   num  # Number of nodes in graph
  # To store the distance from source vertex
  lowerCAmelCase													=   [0] * self.num_nodes
  lowerCAmelCase													=   [-1] * self.num_nodes  # To store the path



 def       UpperCamelCase__     (    self							,					_snake_case							,					_snake_case							,					_snake_case    ):







  """simple docstring"""






  if u in self.adjList:
   self.adjList[u].append((v, w)    )
  else:
   lowerCAmelCase													=   [(v, w)]

  # Assuming undirected graph
  if v in self.adjList:
   self.adjList[v].append((u, w)    )
  else:
   lowerCAmelCase													=   [(u, w)]



 def       UpperCamelCase__     (    self    ):







  """simple docstring"""






  for u in self.adjList:
   print(_snake_case							,					'->'							,					' -> '.join(str(F'{v}({w})'    ) for v, w in self.adjList[u]    )    )



 def       UpperCamelCase__     (    self							,					_snake_case    ):







  """simple docstring"""






  lowerCAmelCase													=   [-1] * self.num_nodes
  # src is the source node
  lowerCAmelCase													=   0
  lowerCAmelCase													=   PriorityQueue()
  q.insert((0, src)    )  # (dist from src, node)
  for u in self.adjList:
   if u != src:
    lowerCAmelCase													=   sys.maxsize  # Infinity
    lowerCAmelCase													=   -1

  while not q.is_empty():
   lowerCAmelCase													=   q.extract_min()  # Returns node with the min dist from source
   # Update the distance of all the neighbours of u and
   # if their prev dist was INFINITY then push them in Q
   for v, w in self.adjList[u]:
    lowerCAmelCase													=   self.dist[u] + w
    if self.dist[v] > new_dist:
     if self.dist[v] == sys.maxsize:
      q.insert((new_dist, v)    )
     else:
      q.decrease_key((self.dist[v], v)							,					_snake_case    )
     lowerCAmelCase													=   new_dist
     lowerCAmelCase													=   u

        # Show the shortest distances from src
  self.show_distances(_snake_case    )



 def       UpperCamelCase__     (    self							,					_snake_case    ):







  """simple docstring"""






  print(F'Distance from node: {src}'    )
  for u in range(self.num_nodes    ):
   print(F'Node {u} has distance: {self.dist[u]}'    )



 def       UpperCamelCase__     (    self							,					_snake_case							,					_snake_case    ):







  """simple docstring"""






  lowerCAmelCase													=   []
  lowerCAmelCase													=   0
  lowerCAmelCase													=   dest
  # Backtracking from dest to src
  while self.par[temp] != -1:
   path.append(_snake_case    )
   if temp != src:
    for v, w in self.adjList[temp]:
     if v == self.par[temp]:
      cost += w
      break
   lowerCAmelCase													=   self.par[temp]
  path.append(_snake_case    )
  path.reverse()

  print(F'----Path to reach {dest} from {src}----'    )
  for u in path:
   print(F'{u}'							,					end=' '    )
   if u != dest:
    print('-> '							,					end=''    )

  print('\nTotal cost of path: '							,					_snake_case    )


if __name__ == "__main__":
       __UpperCamelCase    :	str						=     Graph(9)
       graph.add_edge(0, 1, 4)
       graph.add_edge(0, 7, 8)
       graph.add_edge(1, 2, 8)
       graph.add_edge(1, 7, 11)
       graph.add_edge(2, 3, 7)
       graph.add_edge(2, 8, 2)
       graph.add_edge(2, 5, 4)
       graph.add_edge(3, 4, 9)
       graph.add_edge(3, 5, 14)
       graph.add_edge(4, 5, 10)
       graph.add_edge(5, 6, 2)
       graph.add_edge(6, 7, 1)
       graph.add_edge(6, 8, 6)
       graph.add_edge(7, 8, 7)
       graph.show_graph()
       graph.dijkstra(0)
       graph.show_path(0, 4)

# OUTPUT
# 0 -> 1(4) -> 7(8)
# 1 -> 0(4) -> 2(8) -> 7(11)
# 7 -> 0(8) -> 1(11) -> 6(1) -> 8(7)
# 2 -> 1(8) -> 3(7) -> 8(2) -> 5(4)
# 3 -> 2(7) -> 4(9) -> 5(14)
# 8 -> 2(2) -> 6(6) -> 7(7)
# 5 -> 2(4) -> 3(14) -> 4(10) -> 6(2)
# 4 -> 3(9) -> 5(10)
# 6 -> 5(2) -> 7(1) -> 8(6)
# Distance from node: 0
# Node 0 has distance: 0
# Node 1 has distance: 4
# Node 2 has distance: 12
# Node 3 has distance: 19
# Node 4 has distance: 21
# Node 5 has distance: 11
# Node 6 has distance: 9
# Node 7 has distance: 8
# Node 8 has distance: 14
# ----Path to reach 4 from 0----
# 0 -> 7 -> 6 -> 5 -> 4
# Total cost of path:  21





