

import json
import os
from typing import List, Optional, Tuple

from ...tokenization_utils import PreTrainedTokenizer
from ...utils import logging


_UpperCamelCase			       =			logging.get_logger(__name__)

_UpperCamelCase			       =			{
    '''vocab_file''': '''vocab.json''',
    '''merges_file''': '''merges.txt''',
}

_UpperCamelCase			       =			{
    '''vocab_file''': {
        '''microsoft/biogpt''': '''https://huggingface.co/microsoft/biogpt/resolve/main/vocab.json''',
    },
    '''merges_file''': {'''microsoft/biogpt''': '''https://huggingface.co/microsoft/biogpt/resolve/main/merges.txt'''},
}

_UpperCamelCase			       =			{
    '''microsoft/biogpt''': 1024,
}
def 						UpperCamelCase_(			snake_case__:  Optional[Any]   )       -> Dict:
 UpperCAmelCase__							=				set()
 UpperCAmelCase__							=				word[0]
 for char in word[1:]:
  pairs.add((prev_char, char)   )
  UpperCAmelCase__							=				char
 return pairs







class     lowercase						(       _UpperCamelCase					):



 '''simple docstring'''


 __SCREAMING_SNAKE_CASE												=				VOCAB_FILES_NAMES
 __SCREAMING_SNAKE_CASE												=				PRETRAINED_VOCAB_FILES_MAP
 __SCREAMING_SNAKE_CASE												=				PRETRAINED_POSITIONAL_EMBEDDINGS_SIZES
 __SCREAMING_SNAKE_CASE												=				["""input_ids""", """attention_mask"""]




 def __init__(self       ,       __a       ,       __a       ,       __a="<unk>"       ,       __a="<s>"       ,       __a="</s>"       ,       __a="</s>"       ,       __a="<pad>"       ,       **__a       ,       ) ->					Optional[Any]:






  """simple docstring"""





  super().__init__(
      bos_token=__a       ,       eos_token=__a       ,       sep_token=__a       ,       unk_token=__a       ,       pad_token=__a       ,       **__a       ,       )

  try:
   import sacremoses
  except ImportError:
   raise ImportError(
       'You need to install sacremoses to use BioGptTokenizer. '
       'See https://pypi.org/project/sacremoses/ for installation.' )

  UpperCAmelCase__							=				'en'
  UpperCAmelCase__							=				sacremoses
  # cache of sm.MosesTokenizer instance
  UpperCAmelCase__							=				{}
  UpperCAmelCase__							=				{}
  with open(__a       ,       encoding='utf-8' ) as vocab_handle:
   UpperCAmelCase__							=				json.load(__a )
  UpperCAmelCase__							=				{v: k for k, v in self.encoder.items()}
  with open(__a       ,       encoding='utf-8' ) as merges_handle:
   UpperCAmelCase__							=				merges_handle.read().split('\n' )[:-1]
  UpperCAmelCase__							=				[tuple(merge.split()[:2] ) for merge in merges]
  UpperCAmelCase__							=				dict(zip(__a       ,       range(len(__a ) ) ) )
  UpperCAmelCase__							=				{}




 @property
 def   UpperCamelCase__							(self ) ->					str:






  """simple docstring"""





  return len(self.encoder )




 def   UpperCamelCase__							(self ) ->					Optional[Any]:






  """simple docstring"""





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




 def   UpperCamelCase__							(self       ,       __a       ,       __a ) ->					Optional[int]:






  """simple docstring"""





  if lang not in self.cache_moses_tokenizer:
   UpperCAmelCase__							=				self.sm.MosesTokenizer(lang=__a )
   UpperCAmelCase__							=				moses_tokenizer
  return self.cache_moses_tokenizer[lang].tokenize(
      __a       ,       aggressive_dash_splits=__a       ,       return_str=__a       ,       escape=__a )




 def   UpperCamelCase__							(self       ,       __a       ,       __a ) ->					Any:






  """simple docstring"""





  if lang not in self.cache_moses_detokenizer:
   UpperCAmelCase__							=				self.sm.MosesDetokenizer(lang=__a )
   UpperCAmelCase__							=				moses_detokenizer
  return self.cache_moses_detokenizer[lang].detokenize(__a )




 def   UpperCamelCase__							(self       ,       __a ) ->					Tuple:






  """simple docstring"""





  UpperCAmelCase__							=				tuple(token[:-1] ) + (token[-1] + '</w>',)
  if token in self.cache:
   return self.cache[token]
  UpperCAmelCase__							=				get_pairs(__a )

  if not pairs:
   return token + "</w>"

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

    if word[i] == first and i < len(__a ) - 1 and word[i + 1] == second:
     new_word.append(first + second )
     i += 2
    else:
     new_word.append(word[i] )
     i += 1
   UpperCAmelCase__							=				tuple(__a )
   UpperCAmelCase__							=				new_word
   if len(__a ) == 1:
    break
   else:
    UpperCAmelCase__							=				get_pairs(__a )
  UpperCAmelCase__							=				' '.join(__a )
  if word == "\n  </w>":
   UpperCAmelCase__							=				'\n</w>'
  UpperCAmelCase__							=				word
  return word




 def   UpperCamelCase__							(self       ,       __a       ,       __a=False ) ->					Dict:






  """simple docstring"""





  if bypass_tokenizer:
   UpperCAmelCase__							=				text.split()
  else:
   UpperCAmelCase__							=				self.moses_tokenize(__a       ,       self.lang )

  UpperCAmelCase__							=				[]
  for token in text:
   if token:
    split_tokens.extend(list(self.bpe(__a ).split(' ' ) ) )

  return split_tokens




 def   UpperCamelCase__							(self       ,       __a ) ->					Optional[int]:






  """simple docstring"""





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




 def   UpperCamelCase__							(self       ,       __a ) ->					Any:






  """simple docstring"""





  return self.decoder.get(__a       ,       self.unk_token )




 def   UpperCamelCase__							(self       ,       __a ) ->					str:






  """simple docstring"""





  UpperCAmelCase__							=				[t.replace(' '       ,       '' ).replace('</w>'       ,       ' ' ) for t in tokens]
  UpperCAmelCase__							=				''.join(__a ).split()
  # detokenize
  UpperCAmelCase__							=				self.moses_detokenize(__a       ,       self.lang )
  return text




 def   UpperCamelCase__							(self       ,       __a       ,       __a = None ) ->					List[int]:






  """simple docstring"""





  if token_ids_a is None:
   return [self.sep_token_id] + token_ids_a
  UpperCAmelCase__							=				[self.sep_token_id]
  return sep + token_ids_a + sep + token_ids_a




 def   UpperCamelCase__							(self       ,       __a       ,       __a = None       ,       __a = False ) ->					List[int]:






  """simple docstring"""





  if already_has_special_tokens:
   return super().get_special_tokens_mask(
       token_ids_a=__a       ,       token_ids_a=__a       ,       already_has_special_tokens=__a )
  # no bos used in fairseq
  if token_ids_a is not None:
   return [1] + ([0] * len(__a )) + [1] + ([0] * len(__a ))
  return [1] + ([0] * len(__a ))




 def   UpperCamelCase__							(self       ,       __a       ,       __a = None ) ->					List[int]:






  """simple docstring"""





  UpperCAmelCase__							=				[self.sep_token_id]

  # no bos used in fairseq
  if token_ids_a is None:
   return len(token_ids_a + sep ) * [0]
  return len(token_ids_a + sep ) * [0] + len(token_ids_a + sep ) * [1]




 def   UpperCamelCase__							(self       ,       __a       ,       __a = None ) ->					Tuple[str]:






  """simple docstring"""





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

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

  UpperCAmelCase__							=				0
  with open(__a       ,       'w'       ,       encoding='utf-8' ) as writer:
   for bpe_tokens, token_index in sorted(self.bpe_ranks.items()       ,       key=lambda __a : 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!' )
     UpperCAmelCase__							=				token_index
    writer.write(' '.join(__a ) + '\n' )
    index += 1

  return vocab_file, merge_file




 def __getstate__(self ) ->					str:






  """simple docstring"""





  UpperCAmelCase__							=				self.__dict__.copy()
  UpperCAmelCase__							=				None
  return state




 def __setstate__(self       ,       __a ) ->					Union[str, Any]:






  """simple docstring"""





  UpperCAmelCase__							=				d

  try:
   import sacremoses
  except ImportError:
   raise ImportError(
       'You need to install sacremoses to use XLMTokenizer. '
       'See https://pypi.org/project/sacremoses/ for installation.' )

  UpperCAmelCase__							=				sacremoses






import os
def 						UpperCamelCase_(			)       -> int:
 UpperCAmelCase__							=				os.path.dirname(os.path.realpath(snake_case__   )   )
 UpperCAmelCase__							=				os.path.join(snake_case__  ,    'triangle.txt'   )

 with open(snake_case__   ) as in_file:
  UpperCAmelCase__							=				[[int(snake_case__   ) for i in line.split()] for line in in_file]

 while len(snake_case__   ) != 1:
  UpperCAmelCase__							=				triangle.pop()
  UpperCAmelCase__							=				triangle[-1]
  for j in range(len(snake_case__   ) - 1   ):
   curr_row[j] += max(last_row[j]  ,    last_row[j + 1]   )
 return triangle[0][0]


if __name__ == "__main__":
 print(solution())



