





from typing import TYPE_CHECKING

from ...utils import (
    OptionalDependencyNotAvailable,
    _LazyModule,
    is_tf_available,
    is_tokenizers_available,
    is_torch_available,
)


SCREAMING_SNAKE_CASE_   :      Tuple			=   {
    '''configuration_longformer''': [
        '''LONGFORMER_PRETRAINED_CONFIG_ARCHIVE_MAP''',
        '''LongformerConfig''',
        '''LongformerOnnxConfig''',
    ],
    '''tokenization_longformer''': ['''LongformerTokenizer'''],
}

try:
		if not is_tokenizers_available():
				raise OptionalDependencyNotAvailable()
except OptionalDependencyNotAvailable:
		pass
else:
		SCREAMING_SNAKE_CASE_   :      List[Any]			=   ['''LongformerTokenizerFast''']

try:
		if not is_torch_available():
				raise OptionalDependencyNotAvailable()
except OptionalDependencyNotAvailable:
		pass
else:
		SCREAMING_SNAKE_CASE_   :      Optional[int]			=   [
		    '''LONGFORMER_PRETRAINED_MODEL_ARCHIVE_LIST''',
		    '''LongformerForMaskedLM''',
		    '''LongformerForMultipleChoice''',
		    '''LongformerForQuestionAnswering''',
		    '''LongformerForSequenceClassification''',
		    '''LongformerForTokenClassification''',
		    '''LongformerModel''',
		    '''LongformerPreTrainedModel''',
		    '''LongformerSelfAttention''',
		]

try:
		if not is_tf_available():
				raise OptionalDependencyNotAvailable()
except OptionalDependencyNotAvailable:
		pass
else:
		SCREAMING_SNAKE_CASE_   :      List[str]			=   [
		    '''TF_LONGFORMER_PRETRAINED_MODEL_ARCHIVE_LIST''',
		    '''TFLongformerForMaskedLM''',
		    '''TFLongformerForMultipleChoice''',
		    '''TFLongformerForQuestionAnswering''',
		    '''TFLongformerForSequenceClassification''',
		    '''TFLongformerForTokenClassification''',
		    '''TFLongformerModel''',
		    '''TFLongformerPreTrainedModel''',
		    '''TFLongformerSelfAttention''',
		]


if TYPE_CHECKING:
		from .configuration_longformer import (
		    LONGFORMER_PRETRAINED_CONFIG_ARCHIVE_MAP,
		    LongformerConfig,
		    LongformerOnnxConfig,
		)
		from .tokenization_longformer import LongformerTokenizer

		try:
				if not is_tokenizers_available():
						raise OptionalDependencyNotAvailable()
		except OptionalDependencyNotAvailable:
				pass
		else:
				from .tokenization_longformer_fast import LongformerTokenizerFast

		try:
				if not is_torch_available():
						raise OptionalDependencyNotAvailable()
		except OptionalDependencyNotAvailable:
				pass
		else:
				from .modeling_longformer import (
				    LONGFORMER_PRETRAINED_MODEL_ARCHIVE_LIST,
				    LongformerForMaskedLM,
				    LongformerForMultipleChoice,
				    LongformerForQuestionAnswering,
				    LongformerForSequenceClassification,
				    LongformerForTokenClassification,
				    LongformerModel,
				    LongformerPreTrainedModel,
				    LongformerSelfAttention,
				)

		try:
				if not is_tf_available():
						raise OptionalDependencyNotAvailable()
		except OptionalDependencyNotAvailable:
				pass
		else:
				from .modeling_tf_longformer import (
				    TF_LONGFORMER_PRETRAINED_MODEL_ARCHIVE_LIST,
				    TFLongformerForMaskedLM,
				    TFLongformerForMultipleChoice,
				    TFLongformerForQuestionAnswering,
				    TFLongformerForSequenceClassification,
				    TFLongformerForTokenClassification,
				    TFLongformerModel,
				    TFLongformerPreTrainedModel,
				    TFLongformerSelfAttention,
				)

else:
		import sys

		SCREAMING_SNAKE_CASE_   :      List[Any]			=   _LazyModule(__name__, globals()['''__file__'''], _import_structure, module_spec=__spec__)











def  SCREAMING_SNAKE_CASE				(      snake_case						,   snake_case						,   snake_case							)		->    int:

		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  SCREAMING_SNAKE_CASE				(      snake_case						,   snake_case						,   snake_case							)		->    int:

		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]
				__lowercase											=     sum(
				    count_of_possible_combinations_with_dp_array(target - item						,   snake_case							)
				    for item in array							)
				__lowercase											=     answer
				return answer

		__lowercase											=     [-1] * (target + 1)
		return count_of_possible_combinations_with_dp_array(snake_case						,   snake_case							)



def  SCREAMING_SNAKE_CASE				(      snake_case						,   snake_case						,   snake_case							)		->    int:
		__lowercase											=     [0] * (target + 1)
		__lowercase											=     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()
		SCREAMING_SNAKE_CASE_   :      Tuple			=   3
		SCREAMING_SNAKE_CASE_   :      Dict			=   5
		SCREAMING_SNAKE_CASE_   :      Any			=   [1, 2, 5]
		print(combination_sum_iv(n, array, target))




