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

import regex as re

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


lowercase  :					Optional[int]						    =							logging.get_logger(__name__)


lowercase  :					Optional[int]						    =							{"""vocab_file""": """vocab.json""", """merges_file""": """merges.txt"""}

# See all BART models at https://huggingface.co/models?filter=bart
lowercase  :					int						    =							{
    """vocab_file""": {
        """facebook/bart-base""": """https://huggingface.co/facebook/bart-base/resolve/main/vocab.json""",
        """facebook/bart-large""": """https://huggingface.co/facebook/bart-large/resolve/main/vocab.json""",
        """facebook/bart-large-mnli""": """https://huggingface.co/facebook/bart-large-mnli/resolve/main/vocab.json""",
        """facebook/bart-large-cnn""": """https://huggingface.co/facebook/bart-large-cnn/resolve/main/vocab.json""",
        """facebook/bart-large-xsum""": """https://huggingface.co/facebook/bart-large-xsum/resolve/main/vocab.json""",
        """yjernite/bart_eli5""": """https://huggingface.co/yjernite/bart_eli5/resolve/main/vocab.json""",
    },
    """merges_file""": {
        """facebook/bart-base""": """https://huggingface.co/facebook/bart-base/resolve/main/merges.txt""",
        """facebook/bart-large""": """https://huggingface.co/facebook/bart-large/resolve/main/merges.txt""",
        """facebook/bart-large-mnli""": """https://huggingface.co/facebook/bart-large-mnli/resolve/main/merges.txt""",
        """facebook/bart-large-cnn""": """https://huggingface.co/facebook/bart-large-cnn/resolve/main/merges.txt""",
        """facebook/bart-large-xsum""": """https://huggingface.co/facebook/bart-large-xsum/resolve/main/merges.txt""",
        """yjernite/bart_eli5""": """https://huggingface.co/yjernite/bart_eli5/resolve/main/merges.txt""",
    },
}

lowercase  :					List[str]						    =							{
    """facebook/bart-base""": 1024,
    """facebook/bart-large""": 1024,
    """facebook/bart-large-mnli""": 1024,
    """facebook/bart-large-cnn""": 1024,
    """facebook/bart-large-xsum""": 1024,
    """yjernite/bart_eli5""": 1024,
}







@lru_cache()
def 						_snake_case(  ) ->    Optional[int]:
       lowercase							:     List[Any]       	=      (
           list(range(ord("""!"""				)					,	ord("""~"""				) + 1				)				) + list(range(ord("""¡"""				)					,	ord("""¬"""				) + 1				)				) + list(range(ord("""®"""				)					,	ord("""ÿ"""				) + 1				)				)
       )
       lowercase							:     Optional[Any]       	=      bs[:]
       lowercase							:     int       	=      0
       for b in range(2**8				):
              if b not in bs:
                     bs.append(_UpperCAmelCase				)
                     cs.append(2**8 + n				)
                     n += 1
       lowercase							:     Any       	=      [chr(_UpperCAmelCase				) for n in cs]
       return dict(zip(_UpperCAmelCase					,	_UpperCAmelCase				)				)







def 						_snake_case(  SCREAMING_SNAKE_CASE__				) ->    Union[str, Any]:
       lowercase							:     Optional[int]       	=      set()
       lowercase							:     int       	=      word[0]
       for char in word[1:]:
              pairs.add((prev_char, char)				)
              lowercase							:     Tuple       	=      char
       return pairs




class __snake_case		(      UpperCAmelCase_     ):
    _a		:						Tuple=				VOCAB_FILES_NAMES
    _a		:						Any=				PRETRAINED_VOCAB_FILES_MAP
    _a		:						Union[str, Any]=				PRETRAINED_POSITIONAL_EMBEDDINGS_SIZES
    _a		:						str=				['''input_ids''', '''attention_mask''']
    def __init__(  self		,snake_case		,snake_case		,snake_case="replace"		,snake_case="<s>"		,snake_case="</s>"		,snake_case="</s>"		,snake_case="<s>"		,snake_case="<unk>"		,snake_case="<pad>"		,snake_case="<mask>"		,snake_case=False		,**snake_case		,):



           '''simple docstring'''







           lowercase							:     Optional[Any]       	=      AddedToken(lowerCAmelCase__		,lstrip=lowerCAmelCase__		,rstrip=lowerCAmelCase__      ) if isinstance(lowerCAmelCase__		,lowerCAmelCase__      ) else bos_token
           lowercase							:     str       	=      AddedToken(lowerCAmelCase__		,lstrip=lowerCAmelCase__		,rstrip=lowerCAmelCase__      ) if isinstance(lowerCAmelCase__		,lowerCAmelCase__      ) else eos_token
           lowercase							:     Union[str, Any]       	=      AddedToken(lowerCAmelCase__		,lstrip=lowerCAmelCase__		,rstrip=lowerCAmelCase__      ) if isinstance(lowerCAmelCase__		,lowerCAmelCase__      ) else sep_token
           lowercase							:     Any       	=      AddedToken(lowerCAmelCase__		,lstrip=lowerCAmelCase__		,rstrip=lowerCAmelCase__      ) if isinstance(lowerCAmelCase__		,lowerCAmelCase__      ) else cls_token
           lowercase							:     Any       	=      AddedToken(lowerCAmelCase__		,lstrip=lowerCAmelCase__		,rstrip=lowerCAmelCase__      ) if isinstance(lowerCAmelCase__		,lowerCAmelCase__      ) else unk_token
           lowercase							:     str       	=      AddedToken(lowerCAmelCase__		,lstrip=lowerCAmelCase__		,rstrip=lowerCAmelCase__      ) if isinstance(lowerCAmelCase__		,lowerCAmelCase__      ) else pad_token

           # Mask token behave like a normal word, i.e. include the space before it
           lowercase							:     Any       	=      AddedToken(lowerCAmelCase__		,lstrip=lowerCAmelCase__		,rstrip=lowerCAmelCase__      ) if isinstance(lowerCAmelCase__		,lowerCAmelCase__      ) else mask_token

           super().__init__(
               errors=lowerCAmelCase__		,bos_token=lowerCAmelCase__		,eos_token=lowerCAmelCase__		,unk_token=lowerCAmelCase__		,sep_token=lowerCAmelCase__		,cls_token=lowerCAmelCase__		,pad_token=lowerCAmelCase__		,mask_token=lowerCAmelCase__		,add_prefix_space=lowerCAmelCase__		,**lowerCAmelCase__		,)

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

           # Should have added re.IGNORECASE so BPE merges can happen for capitalized versions of contractions
           lowercase							:     List[str]       	=      re.compile(r"""'s|'t|'re|'ve|'m|'ll|'d| ?\p{L}+| ?\p{N}+| ?[^\s\p{L}\p{N}]+|\s+(?!\S)|\s+"""      )
    @property
    def       _SCREAMING_SNAKE_CASE       (  self      ):



           '''simple docstring'''







           return len(self.encoder      )
    def       _SCREAMING_SNAKE_CASE       (  self      ):



           '''simple docstring'''







           return dict(self.encoder		,**self.added_tokens_encoder      )
    def       _SCREAMING_SNAKE_CASE       (  self		,snake_case      ):



           '''simple docstring'''







           if token in self.cache:
                  return self.cache[token]
           lowercase							:     str       	=      tuple(lowerCAmelCase__      )
           lowercase							:     str       	=      get_pairs(lowerCAmelCase__      )

           if not pairs:
                  return token

           while True:
                  lowercase							:     str       	=      min(lowerCAmelCase__		,key=lambda snake_case      : self.bpe_ranks.get(lowerCAmelCase__		,float("""inf"""      )      )      )
                  if bigram not in self.bpe_ranks:
                         break
                  lowercase							:     Tuple       	=      bigram
                  lowercase							:     Union[str, Any]       	=      []
                  lowercase							:     Any       	=      0
                  while i < len(lowerCAmelCase__      ):
                         try:
                                lowercase							:     Optional[Any]       	=      word.index(lowerCAmelCase__		,lowerCAmelCase__      )
                         except ValueError:
                                new_word.extend(word[i:]      )
                                break
                         else:
                                new_word.extend(word[i:j]      )
                                lowercase							:     Union[str, Any]       	=      j

                         if word[i] == first and i < len(lowerCAmelCase__      ) - 1 and word[i + 1] == second:
                                new_word.append(first + second      )
                                i += 2
                         else:
                                new_word.append(word[i]      )
                                i += 1
                  lowercase							:     Tuple       	=      tuple(lowerCAmelCase__      )
                  lowercase							:     int       	=      new_word
                  if len(lowerCAmelCase__      ) == 1:
                         break
                  else:
                         lowercase							:     int       	=      get_pairs(lowerCAmelCase__      )
           lowercase							:     Union[str, Any]       	=      " ".join(lowerCAmelCase__      )
           lowercase							:     Any       	=      word
           return word
    def       _SCREAMING_SNAKE_CASE       (  self		,snake_case      ):



           '''simple docstring'''







           lowercase							:     List[Any]       	=      []
           for token in re.findall(self.pat		,lowerCAmelCase__      ):
                  lowercase							:     Optional[Any]       	=      "".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(lowerCAmelCase__      ).split(""" """      )      )
           return bpe_tokens
    def       _SCREAMING_SNAKE_CASE       (  self		,snake_case      ):



           '''simple docstring'''







           return self.encoder.get(lowerCAmelCase__		,self.encoder.get(self.unk_token      )      )
    def       _SCREAMING_SNAKE_CASE       (  self		,snake_case      ):



           '''simple docstring'''







           return self.decoder.get(lowerCAmelCase__      )
    def       _SCREAMING_SNAKE_CASE       (  self		,snake_case      ):



           '''simple docstring'''







           lowercase							:     Optional[Any]       	=      "".join(lowerCAmelCase__      )
           lowercase							:     Optional[int]       	=      bytearray([self.byte_decoder[c] for c in text]      ).decode("""utf-8"""		,errors=self.errors      )
           return text
    def       _SCREAMING_SNAKE_CASE       (  self		,snake_case		,snake_case = None      ):



           '''simple docstring'''







           if not os.path.isdir(lowerCAmelCase__      ):
                  logger.error(f"Vocabulary path ({save_directory}) should be a directory"      )
                  return
           lowercase							:     List[Any]       	=      os.path.join(
               lowerCAmelCase__		,(filename_prefix + """-""" if filename_prefix else """""") + VOCAB_FILES_NAMES["""vocab_file"""]      )
           lowercase							:     Any       	=      os.path.join(
               lowerCAmelCase__		,(filename_prefix + """-""" if filename_prefix else """""") + VOCAB_FILES_NAMES["""merges_file"""]      )

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

           lowercase							:     Union[str, Any]       	=      0
           with open(lowerCAmelCase__		,"""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!"""      )
                                lowercase							:     str       	=      token_index
                         writer.write(""" """.join(lowerCAmelCase__      ) + """\n"""      )
                         index += 1

           return vocab_file, merge_file
    def       _SCREAMING_SNAKE_CASE       (  self		,snake_case		,snake_case = None      ):



           '''simple docstring'''







           if token_ids_a is None:
                  return [self.cls_token_id] + token_ids_a + [self.sep_token_id]
           lowercase							:     List[Any]       	=      [self.cls_token_id]
           lowercase							:     Dict       	=      [self.sep_token_id]
           return cls + token_ids_a + sep + sep + token_ids_a + sep
    def       _SCREAMING_SNAKE_CASE       (  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=lowerCAmelCase__		,token_ids_a=lowerCAmelCase__		,already_has_special_tokens=lowerCAmelCase__      )

           if token_ids_a is None:
                  return [1] + ([0] * len(lowerCAmelCase__      )) + [1]
           return [1] + ([0] * len(lowerCAmelCase__      )) + [1, 1] + ([0] * len(lowerCAmelCase__      )) + [1]
    def       _SCREAMING_SNAKE_CASE       (  self		,snake_case		,snake_case = None      ):



           '''simple docstring'''







           lowercase							:     Any       	=      [self.sep_token_id]
           lowercase							:     str       	=      [self.cls_token_id]

           if token_ids_a is None:
                  return len(cls + token_ids_a + sep      ) * [0]
           return len(cls + token_ids_a + sep + sep + token_ids_a + sep      ) * [0]
    def       _SCREAMING_SNAKE_CASE       (  self		,snake_case		,snake_case=False		,**snake_case      ):



           '''simple docstring'''







           lowercase							:     List[Any]       	=      kwargs.pop("""add_prefix_space"""		,self.add_prefix_space      )
           if (is_split_into_words or add_prefix_space) and (len(lowerCAmelCase__      ) > 0 and not text[0].isspace()):
                  lowercase							:     Optional[int]       	=      " " + text
           return (text, kwargs)



import math
import sys







def 			A_      (    _UpperCAmelCase    ):
						if number != int(_UpperCAmelCase    ):
												raise ValueError("the value of input must be a natural number"    )
						if number < 0:
												raise ValueError("the value of input must not be a negative number"    )
						if number == 0:
												return 1
						SCREAMING_SNAKE_CASE_: List[str]  		=       [-1] * (number + 1)
						SCREAMING_SNAKE_CASE_: str  		=       0
						for i in range(1				,	number + 1    ):
												SCREAMING_SNAKE_CASE_: str  		=       sys.maxsize
												SCREAMING_SNAKE_CASE_: List[Any]  		=       int(math.sqrt(_UpperCAmelCase    )    )
												for j in range(1				,	root + 1    ):
																		SCREAMING_SNAKE_CASE_: List[str]  		=       1 + answers[i - (j**2)]
																		SCREAMING_SNAKE_CASE_: Optional[Any]  		=       min(_UpperCAmelCase				,	_UpperCAmelCase    )
												SCREAMING_SNAKE_CASE_: Dict  		=       answer
						return answers[number]


if __name__ == "__main__":
						import doctest

						doctest.testmod()






