
"""simple docstring"""




import warnings
from typing import Dict, List, Optional, Tuple

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


UpperCAmelCase__      :    str    							= logging.get_logger(__name__)



class 	lowerCAmelCase_						(__UpperCamelCase  ):


				"""simple docstring"""



				__UpperCamelCase      :						List[str]					       =   ['''input_ids''', '''attention_mask''']



				def __init__(self   ,       SCREAMING_SNAKE_CASE__="</s>"   ,       SCREAMING_SNAKE_CASE__="<unk>"   ,       SCREAMING_SNAKE_CASE__="<pad>"   ,       SCREAMING_SNAKE_CASE__=1_25   ,       SCREAMING_SNAKE_CASE__=None   ,       **SCREAMING_SNAKE_CASE__   ,       )					->		Union[str, Any]:



											"""simple docstring"""




											if extra_ids > 0 and additional_special_tokens is None:
																		SCREAMING_SNAKE_CASE__						:       Optional[Any]           =   [F'''<extra_id_{i}>''' for i in range(a_    )]
											elif extra_ids > 0 and additional_special_tokens is not None:
																		# Check that we have the right number of extra_id special tokens
																		SCREAMING_SNAKE_CASE__						:       Optional[Any]           =   len(set(filter(lambda SCREAMING_SNAKE_CASE__    : bool("""extra_id""" in str(a_    )    )   ,       a_    )    )    )
																		if extra_tokens != extra_ids:
																									raise ValueError(
																									    F'''Both extra_ids ({extra_ids}) and additional_special_tokens ({additional_special_tokens}) are'''
																									    """ provided to ByT5Tokenizer. In this case the additional_special_tokens must include the"""
																									    """ extra_ids tokens"""    )

											SCREAMING_SNAKE_CASE__						:       str           =   AddedToken(a_   ,       lstrip=a_   ,       rstrip=a_    ) if isinstance(a_   ,       a_    ) else pad_token
											SCREAMING_SNAKE_CASE__						:       str           =   AddedToken(a_   ,       lstrip=a_   ,       rstrip=a_    ) if isinstance(a_   ,       a_    ) else eos_token
											SCREAMING_SNAKE_CASE__						:       int           =   AddedToken(a_   ,       lstrip=a_   ,       rstrip=a_    ) if isinstance(a_   ,       a_    ) else unk_token

											super().__init__(
											    eos_token=a_   ,       unk_token=a_   ,       pad_token=a_   ,       extra_ids=a_   ,       additional_special_tokens=a_   ,       **a_   ,       )

											SCREAMING_SNAKE_CASE__						:       Dict           =   extra_ids

											SCREAMING_SNAKE_CASE__						:       Any           =   2**8  # utf is 8 bits

											# define special tokens dict
											SCREAMING_SNAKE_CASE__						:       Dict[int, str]           =   {
											    self.pad_token: 0,
											    self.eos_token: 1,
											    self.unk_token: 2,
											}
											SCREAMING_SNAKE_CASE__						:       Optional[int]           =   len(self.special_tokens_encoder    )
											SCREAMING_SNAKE_CASE__						:       Union[str, Any]           =   len(a_    )
											for i, token in enumerate(a_    ):
																		SCREAMING_SNAKE_CASE__						:       Union[str, Any]           =   self.vocab_size + i - n
											SCREAMING_SNAKE_CASE__						:       Dict[str, int]           =   {v: k for k, v in self.special_tokens_encoder.items()}



				@property
				def 	__magic_name__    (self    )					->		Union[str, Any]:



											"""simple docstring"""




											return self._utf_vocab_size + self._num_special_tokens + self._extra_ids



				def 	__magic_name__    (self   ,       SCREAMING_SNAKE_CASE__   ,       SCREAMING_SNAKE_CASE__ = None   ,       SCREAMING_SNAKE_CASE__ = False    )					->		Any:



											"""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_    )

											# normal case: some special tokens
											if token_ids_a is None:
																		return ([0] * len(a_    )) + [1]
											return ([0] * len(a_    )) + [1] + ([0] * len(a_    )) + [1]



				def 	__magic_name__    (self   ,       SCREAMING_SNAKE_CASE__    )					->		List[str]:



											"""simple docstring"""




											if len(a_    ) > 0 and token_ids[-1] == self.eos_token_id:
																		warnings.warn(
																		    F'''This sequence already has {self.eos_token}. In future versions this behavior may lead to duplicated'''
																		    """ eos tokens being added."""    )
																		return token_ids
											else:
																		return token_ids + [self.eos_token_id]



				def 	__magic_name__    (self   ,       SCREAMING_SNAKE_CASE__   ,       SCREAMING_SNAKE_CASE__ = None    )					->		int:



											"""simple docstring"""




											SCREAMING_SNAKE_CASE__						:       str           =   [self.eos_token_id]

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



				def 	__magic_name__    (self   ,       SCREAMING_SNAKE_CASE__   ,       SCREAMING_SNAKE_CASE__ = None    )					->		str:



											"""simple docstring"""




											SCREAMING_SNAKE_CASE__						:       Union[str, Any]           =   self._add_eos_if_not_present(a_    )
											if token_ids_a is None:
																		return token_ids_a
											else:
																		SCREAMING_SNAKE_CASE__						:       List[str]           =   self._add_eos_if_not_present(a_    )
																		return token_ids_a + token_ids_a



				def 	__magic_name__    (self   ,       SCREAMING_SNAKE_CASE__    )					->		List[Any]:



											"""simple docstring"""




											SCREAMING_SNAKE_CASE__						:       str           =   [chr(a_    ) for i in text.encode("""utf-8"""    )]
											return tokens



				def 	__magic_name__    (self   ,       SCREAMING_SNAKE_CASE__    )					->		str:



											"""simple docstring"""




											if token in self.special_tokens_encoder:
																		SCREAMING_SNAKE_CASE__						:       Union[str, Any]           =   self.special_tokens_encoder[token]
											elif token in self.added_tokens_encoder:
																		SCREAMING_SNAKE_CASE__						:       Optional[Any]           =   self.added_tokens_encoder[token]
											elif len(a_    ) != 1:
																		SCREAMING_SNAKE_CASE__						:       int           =   self.unk_token_id
											else:
																		SCREAMING_SNAKE_CASE__						:       List[str]           =   ord(a_    ) + self._num_special_tokens
											return token_id



				def 	__magic_name__    (self   ,       SCREAMING_SNAKE_CASE__    )					->		Union[str, Any]:



											"""simple docstring"""




											if index in self.special_tokens_decoder:
																		SCREAMING_SNAKE_CASE__						:       Dict           =   self.special_tokens_decoder[index]
											else:
																		SCREAMING_SNAKE_CASE__						:       List[Any]           =   chr(index - self._num_special_tokens    )
											return token



				def 	__magic_name__    (self   ,       SCREAMING_SNAKE_CASE__    )					->		Tuple:



											"""simple docstring"""




											SCREAMING_SNAKE_CASE__						:       List[Any]           =   b''''''
											for token in tokens:
																		if token in self.special_tokens_decoder:
																									SCREAMING_SNAKE_CASE__						:       Optional[int]           =   self.special_tokens_decoder[token].encode("""utf-8"""    )
																		elif token in self.added_tokens_decoder:
																									SCREAMING_SNAKE_CASE__						:       List[str]           =   self.special_tokens_decoder[token].encode("""utf-8"""    )
																		elif token in self.special_tokens_encoder:
																									SCREAMING_SNAKE_CASE__						:       Tuple           =   token.encode("""utf-8"""    )
																		elif token in self.added_tokens_encoder:
																									SCREAMING_SNAKE_CASE__						:       int           =   token.encode("""utf-8"""    )
																		else:
																									SCREAMING_SNAKE_CASE__						:       Any           =   bytes([ord(a_    )]    )
																		bstring += tok_string
											SCREAMING_SNAKE_CASE__						:       Dict           =   bstring.decode("""utf-8"""   ,       errors="""ignore"""    )
											return string



				def 	__magic_name__    (self   ,       SCREAMING_SNAKE_CASE__   ,       SCREAMING_SNAKE_CASE__ = None    )					->		Union[str, Any]:



											"""simple docstring"""




											return ()









def        a						(      _UpperCAmelCase							:					Any						):







		'''simple docstring'''





		__UpperCAmelCase    :     Any													=	0
		__UpperCAmelCase    :     str													=	len(_UpperCAmelCase						)

		for i in range(n - 1						):
				for j in range(i + 1 ,   _UpperCAmelCase						):
						if arr[i] > arr[j]:
								num_inversions += 1

		return num_inversions

def        a						(      _UpperCAmelCase							:					str						):







		'''simple docstring'''





		if len(_UpperCAmelCase						) <= 1:
				return arr, 0
		__UpperCAmelCase    :     Dict													=	len(_UpperCAmelCase						) // 2
		__UpperCAmelCase    :     Union[str, Any]													=	arr[0:mid]
		__UpperCAmelCase    :     Optional[Any]													=	arr[mid:]

		__UpperCAmelCase							,					__UpperCAmelCase    :     Tuple													=	count_inversions_recursive(_UpperCAmelCase						)
		__UpperCAmelCase							,					__UpperCAmelCase    :     Optional[Any]													=	count_inversions_recursive(_UpperCAmelCase						)
		__UpperCAmelCase							,					__UpperCAmelCase    :     int													=	_count_cross_inversions(_UpperCAmelCase ,   _UpperCAmelCase						)

		__UpperCAmelCase    :     List[str]													=	inversion_p + inversions_q + cross_inversions
		return c, num_inversions

def        a						(      _UpperCAmelCase							:					List[str] ,   _UpperCAmelCase							:					Any						):







		'''simple docstring'''





		__UpperCAmelCase    :     List[Any]													=	[]
		__UpperCAmelCase    :     Any													=	0
		while i < len(_UpperCAmelCase						) and j < len(_UpperCAmelCase						):
				if p[i] > q[j]:
						# if P[1] > Q[j], then P[k] > Q[k] for all  i < k <= len(P)
						# These are all inversions. The claim emerges from the
						# property that P is sorted.
						num_inversion += len(_UpperCAmelCase						) - i
						r.append(q[j]						)
						j += 1
				else:
						r.append(p[i]						)
						i += 1

		if i < len(_UpperCAmelCase						):
				r.extend(p[i:]						)
		else:
				r.extend(q[j:]						)

		return r, num_inversion

def        a						(      ):







		'''simple docstring'''





		__UpperCAmelCase    :     Optional[Any]													=	[10, 2, 1, 5, 5, 2, 11]

		# this arr has 8 inversions:
		# (10, 2), (10, 1), (10, 5), (10, 5), (10, 2), (2, 1), (5, 2), (5, 2)

		__UpperCAmelCase    :     List[str]													=	count_inversions_bf(_UpperCAmelCase						)
		__UpperCAmelCase							,					__UpperCAmelCase    :     Tuple													=	count_inversions_recursive(_UpperCAmelCase						)

		assert num_inversions_bf == num_inversions_recursive == 8

		print('''number of inversions = ''' ,   _UpperCAmelCase						)

		# testing an array with zero inversion (a sorted arr_1)

		arr_a.sort()
		__UpperCAmelCase    :     Any													=	count_inversions_bf(_UpperCAmelCase						)
		__UpperCAmelCase							,					__UpperCAmelCase    :     int													=	count_inversions_recursive(_UpperCAmelCase						)

		assert num_inversions_bf == num_inversions_recursive == 0
		print('''number of inversions = ''' ,   _UpperCAmelCase						)

		# an empty list should also have zero inversions
		__UpperCAmelCase    :     Tuple													=	[]
		__UpperCAmelCase    :     Union[str, Any]													=	count_inversions_bf(_UpperCAmelCase						)
		__UpperCAmelCase							,					__UpperCAmelCase    :     int													=	count_inversions_recursive(_UpperCAmelCase						)

		assert num_inversions_bf == num_inversions_recursive == 0
		print('''number of inversions = ''' ,   _UpperCAmelCase						)


if __name__ == "__main__":
				main()





