"""simple docstring"""
def 						__a   (	_SCREAMING_SNAKE_CASE		,     _SCREAMING_SNAKE_CASE		,     _SCREAMING_SNAKE_CASE   )	->int:

  def count_of_possible_combinations(_SCREAMING_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(_SCREAMING_SNAKE_CASE   )







def 						__a   (	_SCREAMING_SNAKE_CASE		,     _SCREAMING_SNAKE_CASE		,     _SCREAMING_SNAKE_CASE   )	->int:

  def count_of_possible_combinations_with_dp_array(
      _SCREAMING_SNAKE_CASE		,     _SCREAMING_SNAKE_CASE   ) -> int:
    if target < 0:
      return 0
    if target == 0:
      return 1
    if dp_array[target] != -1:
      return dp_array[target]
    a__:     List[Any]										=	sum(
        count_of_possible_combinations_with_dp_array(target - item		,     _SCREAMING_SNAKE_CASE   )
        for item in array   )
    a__:     Dict										=	answer
    return answer

  a__:     Dict										=	[-1] * (target + 1)
  return count_of_possible_combinations_with_dp_array(_SCREAMING_SNAKE_CASE		,     _SCREAMING_SNAKE_CASE   )







def 						__a   (	_SCREAMING_SNAKE_CASE		,     _SCREAMING_SNAKE_CASE		,     _SCREAMING_SNAKE_CASE   )	->int:
  a__:     List[Any]										=	[0] * (target + 1)
  a__:     Tuple										=	1

  for i in range(1		,     target + 1   ):
    for j in range(_SCREAMING_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()
 lowercase__					       =	3
 lowercase__					       =	5
 lowercase__					       =	[1, 2, 5]
 print(combination_sum_iv(n, array, target))



"""simple docstring"""
import itertools
import random
import unittest

import numpy as np

from transformers import WAV_2_VEC_2_PRETRAINED_MODEL_ARCHIVE_LIST, WavaVecaConfig, WavaVecaFeatureExtractor
from transformers.testing_utils import require_torch, slow

from ...test_sequence_feature_extraction_common import SequenceFeatureExtractionTestMixin


lowercase__					       =	random.Random()







def 						__a   (	_SCREAMING_SNAKE_CASE		,     _SCREAMING_SNAKE_CASE=1.0		,     _SCREAMING_SNAKE_CASE=None		,     _SCREAMING_SNAKE_CASE=None   )	->Optional[int]:
  if rng is None:
    a__:     Any										=	global_rng

  a__:     int										=	[]
  for batch_idx in range(shape[0]   ):
    values.append([]   )
    for _ in range(shape[1]   ):
      values[-1].append(rng.random() * scale   )

  return values




class    __snake_case       (     unittest.TestCase				):



      def __init__(						self    ,			lowercase    ,			lowercase=7    ,			lowercase=4_00    ,			lowercase=20_00    ,			lowercase=1    ,			lowercase=0.0    ,			lowercase=1_60_00    ,			lowercase=True    ,			lowercase=True    ,			)	->			Union[str, Any]:





        '''simple docstring'''





        a__:     Tuple										=	parent
        a__:     Optional[int]										=	batch_size
        a__:     Optional[Any]										=	min_seq_length
        a__:     Optional[int]										=	max_seq_length
        a__:     Tuple										=	(self.max_seq_length - self.min_seq_length) // (self.batch_size - 1)
        a__:     Dict										=	feature_size
        a__:     Any										=	padding_value
        a__:     Optional[Any]										=	sampling_rate
        a__:     Optional[Any]										=	return_attention_mask
        a__:     str										=	do_normalize



      def   lowerCamelCase_   (						self)	->			Dict:





        '''simple docstring'''





        return {
            "feature_size": self.feature_size,
            "padding_value": self.padding_value,
            "sampling_rate": self.sampling_rate,
            "return_attention_mask": self.return_attention_mask,
            "do_normalize": self.do_normalize,
        }



      def   lowerCamelCase_   (						self    ,			lowercase=False    ,			lowercase=False)	->			Tuple:





        '''simple docstring'''





        def _flatten(lowercase):
          return list(itertools.chain(*lowercase))

        if equal_length:
          a__:     Dict										=	floats_list((self.batch_size, self.max_seq_length))
        else:
          # make sure that inputs increase in size
          a__:     List[Any]										=	[
              _flatten(floats_list((x, self.feature_size)))
              for x in range(self.min_seq_length    ,			self.max_seq_length    ,			self.seq_length_diff)
          ]

        if numpify:
          a__:     str										=	[np.asarray(lowercase) for x in speech_inputs]

        return speech_inputs







class    __snake_case       (     __lowerCAmelCase       ,      unittest.TestCase				):
      a__        =		WavaVecaFeatureExtractor



      def   lowerCamelCase_   (						self)	->			Tuple:





        '''simple docstring'''





        a__:     Optional[int]										=	WavaVecaFeatureExtractionTester(self)



      def   lowerCamelCase_   (						self    ,			lowercase)	->			List[Any]:





        '''simple docstring'''





        self.assertTrue(np.all(np.mean(lowercase    ,			axis=0) < 1e-3))
        self.assertTrue(np.all(np.abs(np.var(lowercase    ,			axis=0) - 1) < 1e-3))



      def   lowerCamelCase_   (						self)	->			List[str]:





        '''simple docstring'''





        a__:     List[Any]										=	self.feature_extraction_class(**self.feat_extract_tester.prepare_feat_extract_dict())
        # create three inputs of length 800, 1000, and 1200
        a__:     Optional[Any]										=	[floats_list((1, x))[0] for x in range(8_00    ,			14_00    ,			2_00)]
        a__:     List[str]										=	[np.asarray(lowercase) for speech_input in speech_inputs]

        # Test not batched input
        a__:     Optional[Any]										=	feat_extract(speech_inputs[0]    ,			return_tensors='np').input_values
        a__:     Dict										=	feat_extract(np_speech_inputs[0]    ,			return_tensors='np').input_values
        self.assertTrue(np.allclose(lowercase    ,			lowercase    ,			atol=1e-3))

        # Test batched
        a__:     Dict										=	feat_extract(lowercase    ,			return_tensors='np').input_values
        a__:     int										=	feat_extract(lowercase    ,			return_tensors='np').input_values
        for enc_seq_a, enc_seq_a in zip(lowercase    ,			lowercase):
          self.assertTrue(np.allclose(lowercase    ,			lowercase    ,			atol=1e-3))

        # Test 2-D numpy arrays are batched.
        a__:     int										=	[floats_list((1, x))[0] for x in (8_00, 8_00, 8_00)]
        a__:     Union[str, Any]										=	np.asarray(lowercase)
        a__:     int										=	feat_extract(lowercase    ,			return_tensors='np').input_values
        a__:     Any										=	feat_extract(lowercase    ,			return_tensors='np').input_values
        for enc_seq_a, enc_seq_a in zip(lowercase    ,			lowercase):
          self.assertTrue(np.allclose(lowercase    ,			lowercase    ,			atol=1e-3))



      def   lowerCamelCase_   (						self)	->			List[Any]:





        '''simple docstring'''





        a__:     Tuple										=	self.feature_extraction_class(**self.feat_extract_tester.prepare_feat_extract_dict())
        a__:     List[Any]										=	[floats_list((1, x))[0] for x in range(8_00    ,			14_00    ,			2_00)]

        a__:     Optional[int]										=	['longest', 'max_length', 'do_not_pad']
        a__:     List[Any]										=	[None, 16_00, None]
        for max_length, padding in zip(lowercase    ,			lowercase):
          a__:     Dict										=	feat_extract(lowercase    ,			padding=lowercase    ,			max_length=lowercase    ,			return_tensors='np')
          a__:     Union[str, Any]										=	processed.input_values

          self._check_zero_mean_unit_variance(input_values[0][:8_00])
          self.assertTrue(input_values[0][8_00:].sum() < 1e-6)
          self._check_zero_mean_unit_variance(input_values[1][:10_00])
          self.assertTrue(input_values[0][10_00:].sum() < 1e-6)
          self._check_zero_mean_unit_variance(input_values[2][:12_00])



      def   lowerCamelCase_   (						self)	->			Optional[int]:





        '''simple docstring'''





        a__:     str										=	self.feature_extraction_class(**self.feat_extract_tester.prepare_feat_extract_dict())
        a__:     Optional[int]										=	range(8_00    ,			14_00    ,			2_00)
        a__:     List[str]										=	[floats_list((1, x))[0] for x in lengths]

        a__:     Tuple										=	['longest', 'max_length', 'do_not_pad']
        a__:     Dict										=	[None, 16_00, None]

        for max_length, padding in zip(lowercase    ,			lowercase):
          a__:     int										=	feat_extract(lowercase    ,			max_length=lowercase    ,			padding=lowercase)
          a__:     Any										=	processed.input_values

          self._check_zero_mean_unit_variance(input_values[0][:8_00])
          self._check_zero_mean_unit_variance(input_values[1][:10_00])
          self._check_zero_mean_unit_variance(input_values[2][:12_00])



      def   lowerCamelCase_   (						self)	->			List[str]:





        '''simple docstring'''





        a__:     Any										=	self.feature_extraction_class(**self.feat_extract_tester.prepare_feat_extract_dict())
        a__:     Any										=	[floats_list((1, x))[0] for x in range(8_00    ,			14_00    ,			2_00)]
        a__:     Dict										=	feat_extract(
            lowercase    ,			truncation=lowercase    ,			max_length=10_00    ,			padding='max_length'    ,			return_tensors='np')
        a__:     int										=	processed.input_values

        self._check_zero_mean_unit_variance(input_values[0, :8_00])
        self._check_zero_mean_unit_variance(input_values[1])
        self._check_zero_mean_unit_variance(input_values[2])



      def   lowerCamelCase_   (						self)	->			Dict:





        '''simple docstring'''





        a__:     Tuple										=	self.feature_extraction_class(**self.feat_extract_tester.prepare_feat_extract_dict())
        a__:     int										=	[floats_list((1, x))[0] for x in range(8_00    ,			14_00    ,			2_00)]
        a__:     str										=	feat_extract(
            lowercase    ,			truncation=lowercase    ,			max_length=10_00    ,			padding='longest'    ,			return_tensors='np')
        a__:     Any										=	processed.input_values

        self._check_zero_mean_unit_variance(input_values[0, :8_00])
        self._check_zero_mean_unit_variance(input_values[1, :10_00])
        self._check_zero_mean_unit_variance(input_values[2])

        # make sure that if max_length < longest -> then pad to max_length
        self.assertTrue(input_values.shape == (3, 10_00))

        a__:     Dict										=	[floats_list((1, x))[0] for x in range(8_00    ,			14_00    ,			2_00)]
        a__:     Tuple										=	feat_extract(
            lowercase    ,			truncation=lowercase    ,			max_length=20_00    ,			padding='longest'    ,			return_tensors='np')
        a__:     str										=	processed.input_values

        self._check_zero_mean_unit_variance(input_values[0, :8_00])
        self._check_zero_mean_unit_variance(input_values[1, :10_00])
        self._check_zero_mean_unit_variance(input_values[2])

        # make sure that if max_length > longest -> then pad to longest
        self.assertTrue(input_values.shape == (3, 12_00))



      @require_torch
      def   lowerCamelCase_   (						self)	->			Tuple:





        '''simple docstring'''





        import torch

        a__:     Optional[int]										=	self.feature_extraction_class(**self.feat_extract_tester.prepare_feat_extract_dict())
        a__:     Tuple										=	np.random.rand(1_00).astype(np.floataa)
        a__:     Tuple										=	np_speech_inputs.tolist()

        for inputs in [py_speech_inputs, np_speech_inputs]:
          a__:     Any										=	feature_extractor.pad([{'input_values': inputs}]    ,			return_tensors='np')
          self.assertTrue(np_processed.input_values.dtype == np.floataa)
          a__:     Optional[Any]										=	feature_extractor.pad([{'input_values': inputs}]    ,			return_tensors='pt')
          self.assertTrue(pt_processed.input_values.dtype == torch.floataa)



      @slow
      @require_torch
      def   lowerCamelCase_   (						self)	->			Optional[Any]:





        '''simple docstring'''





        for model_id in WAV_2_VEC_2_PRETRAINED_MODEL_ARCHIVE_LIST:
          a__:     str										=	WavaVecaConfig.from_pretrained(lowercase)
          a__:     str										=	WavaVecaFeatureExtractor.from_pretrained(lowercase)

          # only "layer" feature extraction norm should make use of
          # attention_mask
          self.assertEqual(feat_extract.return_attention_mask    ,			config.feat_extract_norm == 'layer')


