




import json
from typing import Iterator, List, Union

from tokenizers import AddedToken, Regex, Tokenizer, decoders, normalizers, pre_tokenizers, trainers
from tokenizers.implementations.base_tokenizer import BaseTokenizer
from tokenizers.models import Unigram
from tokenizers.processors import TemplateProcessing


class 							__UpperCamelCase			( _SCREAMING_SNAKE_CASE  ):





							'''simple docstring'''



							def __init__( self       , UpperCAmelCase_ = "▁"       , UpperCAmelCase_ = True       , UpperCAmelCase_ = "<unk>"       , UpperCAmelCase_ = "</s>"       , UpperCAmelCase_ = "<pad>"       , ):
														lowerCAmelCase   =		{
														    '''pad''': {'''id''': 0, '''token''': pad_token},
														    '''eos''': {'''id''': 1, '''token''': eos_token},
														    '''unk''': {'''id''': 2, '''token''': unk_token},
														}

														lowerCAmelCase   =		[None] * len(self.special_tokens						)
														for token_dict in self.special_tokens.values():
																					lowerCAmelCase   =		token_dict['''token''']

														lowerCAmelCase   =		Tokenizer(Unigram()						)

														lowerCAmelCase   =		normalizers.Sequence(
														    [
														        normalizers.Nmt(),
														        normalizers.NFKC(),
														        normalizers.Replace(Regex(''' {2,}'''						)       , ''' '''						),
														        normalizers.Lowercase(),
														    ]						)
														lowerCAmelCase   =		pre_tokenizers.Sequence(
														    [
														        pre_tokenizers.Metaspace(replacement=A_       , add_prefix_space=A_						),
														        pre_tokenizers.Digits(individual_digits=A_						),
														        pre_tokenizers.Punctuation(),
														    ]						)
														lowerCAmelCase   =		decoders.Metaspace(replacement=A_       , add_prefix_space=A_						)

														lowerCAmelCase   =		TemplateProcessing(
														    single=F"""$A {self.special_tokens["eos"]["token"]}"""       , special_tokens=[(self.special_tokens['''eos''']['''token'''], self.special_tokens['''eos''']['''id'''])]       , )

														lowerCAmelCase   =		{
														    '''model''': '''SentencePieceUnigram''',
														    '''replacement''': replacement,
														    '''add_prefix_space''': add_prefix_space,
														}

														super().__init__(A_       , A_						)



							def       __snake_case		( self       , UpperCAmelCase_       , UpperCAmelCase_ = 80_00       , UpperCAmelCase_ = True       , ):
														lowerCAmelCase   =		trainers.UnigramTrainer(
														    vocab_size=A_       , special_tokens=self.special_tokens_list       , show_progress=A_       , )

														if isinstance(A_       , A_						):
																					lowerCAmelCase   =		[files]
														self._tokenizer.train(A_       , trainer=A_						)

														self.add_unk_id()



							def       __snake_case		( self       , UpperCAmelCase_       , UpperCAmelCase_ = 80_00       , UpperCAmelCase_ = True       , ):
														lowerCAmelCase   =		trainers.UnigramTrainer(
														    vocab_size=A_       , special_tokens=self.special_tokens_list       , show_progress=A_       , )

														self._tokenizer.train_from_iterator(A_       , trainer=A_						)

														self.add_unk_id()






							def       __snake_case		( self						):
														lowerCAmelCase   =		json.loads(self._tokenizer.to_str()						)

														lowerCAmelCase   =		self.special_tokens['''unk''']['''id''']

														lowerCAmelCase   =		Tokenizer.from_str(json.dumps(A_						)						)









def       UpperCAmelCase       (     _snake_case						, _snake_case						, _snake_case							):

							def count_of_possible_combinations(_snake_case							) -> int:
														if target < 0:
																					return 0
														if target == 0:
																					return 1
														return sum(count_of_possible_combinations(target - item							) for item in array							)

							return count_of_possible_combinations(_snake_case							)



def       UpperCAmelCase       (     _snake_case						, _snake_case						, _snake_case							):

							def count_of_possible_combinations_with_dp_array(
							    _snake_case						, _snake_case							) -> int:
														if target < 0:
																					return 0
														if target == 0:
																					return 1
														if dp_array[target] != -1:
																					return dp_array[target]
														lowerCAmelCase   =		sum(
														    count_of_possible_combinations_with_dp_array(target - item						, _snake_case							)
														    for item in array							)
														lowerCAmelCase   =		answer
														return answer

							lowerCAmelCase   =		[-1] * (target + 1)
							return count_of_possible_combinations_with_dp_array(_snake_case						, _snake_case							)



def       UpperCAmelCase       (     _snake_case						, _snake_case						, _snake_case							):
							lowerCAmelCase   =		[0] * (target + 1)
							lowerCAmelCase   =		1

							for i in range(1						, target + 1							):
														for j in range(_snake_case							):
																					if i - array[j] >= 0:
																												dp_array[i] += dp_array[i - array[j]]

							return dp_array[target]


if __name__ == "__main__":
		import doctest

		doctest.testmod()
		UpperCAmelCase_						=3
		UpperCAmelCase_						=5
		UpperCAmelCase_						=[1, 2, 5]
		print(combination_sum_iv(n, array, target))



