


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


lowerCamelCase						=		logging.get_logger(__name__)


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

# See all BART models at https://huggingface.co/models?filter=bart
lowerCamelCase						=		{
    '''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''',
    },
}

lowerCamelCase						=		{
    '''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      lowerCamelCase_    (       ):




		"""simple docstring"""






		lowerCAmelCase__   :			Optional[int]         =					(
		    list(range(ord('''!'''       )	,   ord('''~'''       ) + 1       )       ) + list(range(ord('''¡'''       )	,   ord('''¬'''       ) + 1       )       ) + list(range(ord('''®'''       )	,   ord('''ÿ'''       ) + 1       )       )
		)
		lowerCAmelCase__   :			Optional[int]         =					bs[:]
		lowerCAmelCase__   :			Dict         =					0
		for b in range(2**8       ):
				if b not in bs:
						bs.append(__lowerCamelCase       )
						cs.append(2**8 + n       )
						n += 1
		lowerCAmelCase__   :			Union[str, Any]         =					[chr(__lowerCamelCase       ) for n in cs]
		return dict(zip(__lowerCamelCase	,   __lowerCamelCase       )       )






def      lowerCamelCase_    (       _a       ):




		"""simple docstring"""






		lowerCAmelCase__   :			Optional[int]         =					set()
		lowerCAmelCase__   :			List[Any]         =					word[0]
		for char in word[1:]:
				pairs.add((prev_char, char)       )
				lowerCAmelCase__   :			Tuple         =					char
		return pairs





class 					_a							(				_lowerCAmelCase):
	_a  :  List[str]          =							VOCAB_FILES_NAMES
	_a  :  Dict          =							PRETRAINED_VOCAB_FILES_MAP
	_a  :  str          =							PRETRAINED_POSITIONAL_EMBEDDINGS_SIZES
	_a  :  Optional[int]          =							['''input_ids''', '''attention_mask''']




	def __init__(					self						:		Optional[Any]		,					_SCREAMING_SNAKE_CASE						:		List[str]		,					_SCREAMING_SNAKE_CASE						:		Tuple		,					_SCREAMING_SNAKE_CASE						:		Tuple="replace"		,					_SCREAMING_SNAKE_CASE						:		Any="<s>"		,					_SCREAMING_SNAKE_CASE						:		str="</s>"		,					_SCREAMING_SNAKE_CASE						:		Dict="</s>"		,					_SCREAMING_SNAKE_CASE						:		Any="<s>"		,					_SCREAMING_SNAKE_CASE						:		Union[str, Any]="<unk>"		,					_SCREAMING_SNAKE_CASE						:		List[Any]="<pad>"		,					_SCREAMING_SNAKE_CASE						:		int="<mask>"		,					_SCREAMING_SNAKE_CASE						:		str=False		,					**_SCREAMING_SNAKE_CASE						:		int		,					)->       str:
			lowerCAmelCase__   :			List[Any]         =					AddedToken(_SCREAMING_SNAKE_CASE		,					lstrip=_SCREAMING_SNAKE_CASE		,					rstrip=_SCREAMING_SNAKE_CASE		) if isinstance(_SCREAMING_SNAKE_CASE		,					_SCREAMING_SNAKE_CASE		) else bos_token
			lowerCAmelCase__   :			int         =					AddedToken(_SCREAMING_SNAKE_CASE		,					lstrip=_SCREAMING_SNAKE_CASE		,					rstrip=_SCREAMING_SNAKE_CASE		) if isinstance(_SCREAMING_SNAKE_CASE		,					_SCREAMING_SNAKE_CASE		) else eos_token
			lowerCAmelCase__   :			Union[str, Any]         =					AddedToken(_SCREAMING_SNAKE_CASE		,					lstrip=_SCREAMING_SNAKE_CASE		,					rstrip=_SCREAMING_SNAKE_CASE		) if isinstance(_SCREAMING_SNAKE_CASE		,					_SCREAMING_SNAKE_CASE		) else sep_token
			lowerCAmelCase__   :			Optional[int]         =					AddedToken(_SCREAMING_SNAKE_CASE		,					lstrip=_SCREAMING_SNAKE_CASE		,					rstrip=_SCREAMING_SNAKE_CASE		) if isinstance(_SCREAMING_SNAKE_CASE		,					_SCREAMING_SNAKE_CASE		) else cls_token
			lowerCAmelCase__   :			Union[str, Any]         =					AddedToken(_SCREAMING_SNAKE_CASE		,					lstrip=_SCREAMING_SNAKE_CASE		,					rstrip=_SCREAMING_SNAKE_CASE		) if isinstance(_SCREAMING_SNAKE_CASE		,					_SCREAMING_SNAKE_CASE		) else unk_token
			lowerCAmelCase__   :			int         =					AddedToken(_SCREAMING_SNAKE_CASE		,					lstrip=_SCREAMING_SNAKE_CASE		,					rstrip=_SCREAMING_SNAKE_CASE		) if isinstance(_SCREAMING_SNAKE_CASE		,					_SCREAMING_SNAKE_CASE		) else pad_token

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

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

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

			# Should have added re.IGNORECASE so BPE merges can happen for capitalized versions of contractions
			lowerCAmelCase__   :			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 							UpperCAmelCase__(					self						:		List[str]		)->       List[Any]:
			return len(self.encoder		)




	def 							UpperCAmelCase__(					self						:		Tuple		)->       List[str]:
			return dict(self.encoder		,					**self.added_tokens_encoder		)




	def 							UpperCAmelCase__(					self						:		int		,					_SCREAMING_SNAKE_CASE						:		Dict		)->       Optional[int]:




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

			if not pairs:
					return token

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

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




	def 							UpperCAmelCase__(					self						:		Optional[Any]		,					_SCREAMING_SNAKE_CASE						:		Optional[int]		)->       Optional[Any]:
			lowerCAmelCase__   :			Union[str, Any]         =					[]
			for token in re.findall(self.pat		,					_SCREAMING_SNAKE_CASE		):
					lowerCAmelCase__   :			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(_SCREAMING_SNAKE_CASE		).split(''' '''		)		)
			return bpe_tokens




	def 							UpperCAmelCase__(					self						:		int		,					_SCREAMING_SNAKE_CASE						:		Dict		)->       List[Any]:
			return self.encoder.get(_SCREAMING_SNAKE_CASE		,					self.encoder.get(self.unk_token		)		)




	def 							UpperCAmelCase__(					self						:		str		,					_SCREAMING_SNAKE_CASE						:		Union[str, Any]		)->       List[Any]:
			return self.decoder.get(_SCREAMING_SNAKE_CASE		)




	def 							UpperCAmelCase__(					self						:		Any		,					_SCREAMING_SNAKE_CASE						:		Optional[int]		)->       Tuple:
			lowerCAmelCase__   :			List[str]         =					"".join(_SCREAMING_SNAKE_CASE		)
			lowerCAmelCase__   :			Dict         =					bytearray([self.byte_decoder[c] for c in text]		).decode('''utf-8'''		,					errors=self.errors		)
			return text




	def 							UpperCAmelCase__(					self						:		Tuple		,					_SCREAMING_SNAKE_CASE						:		str		,					_SCREAMING_SNAKE_CASE						:		Optional[str] = None		)->       Union[str, Any]:




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

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

			lowerCAmelCase__   :			Any         =					0
			with open(_SCREAMING_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 _SCREAMING_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__   :			Union[str, Any]         =					token_index
							writer.write(''' '''.join(_SCREAMING_SNAKE_CASE		) + '''\n'''		)
							index += 1

			return vocab_file, merge_file




	def 							UpperCAmelCase__(					self						:		Union[str, Any]		,					_SCREAMING_SNAKE_CASE						:		List[int]		,					_SCREAMING_SNAKE_CASE						:		Optional[List[int]] = None		)->       Dict:




			if token_ids_a is None:
					return [self.cls_token_id] + token_ids_a + [self.sep_token_id]
			lowerCAmelCase__   :			Optional[Any]         =					[self.cls_token_id]
			lowerCAmelCase__   :			Tuple         =					[self.sep_token_id]
			return cls + token_ids_a + sep + sep + token_ids_a + sep




	def 							UpperCAmelCase__(					self						:		Dict		,					_SCREAMING_SNAKE_CASE						:		List[int]		,					_SCREAMING_SNAKE_CASE						:		Optional[List[int]] = None		,					_SCREAMING_SNAKE_CASE						:		bool = False		)->       Dict:




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

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




	def 							UpperCAmelCase__(					self						:		str		,					_SCREAMING_SNAKE_CASE						:		List[int]		,					_SCREAMING_SNAKE_CASE						:		Optional[List[int]] = None		)->       int:
			lowerCAmelCase__   :			Dict         =					[self.sep_token_id]
			lowerCAmelCase__   :			Union[str, Any]         =					[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 							UpperCAmelCase__(					self						:		List[Any]		,					_SCREAMING_SNAKE_CASE						:		List[Any]		,					_SCREAMING_SNAKE_CASE						:		Optional[Any]=False		,					**_SCREAMING_SNAKE_CASE						:		str		)->       Union[str, Any]:
			lowerCAmelCase__   :			List[Any]         =					kwargs.pop('''add_prefix_space'''		,					self.add_prefix_space		)
			if (is_split_into_words or add_prefix_space) and (len(_SCREAMING_SNAKE_CASE		) > 0 and not text[0].isspace()):
					lowerCAmelCase__   :			Any         =					" " + text
			return (text, kwargs)











'''simple docstring'''


def 							UpperCAmelCase_  (						__lowerCamelCase					:					int = 1_00 ):
   lowercase_			:Tuple    			= n * (n + 1) * (2 * n + 1) / 6
   lowercase_			:List[str]    			= (n * (n + 1) / 2) ** 2
   return int(square_of_sum - sum_of_squares )


if __name__ == "__main__":
 print(F'''{solution() = }''')


