



def 		UpperCamelCase     (       snake_case__	:   int = 1000     )     ->					int:
   return sum(2 * a * ((a - 1) // 2) for a in range(3	,					n + 1     )     )


if __name__ == "__main__":
    print(solution())








import unittest

from transformers import (
    MODEL_FOR_SEQUENCE_CLASSIFICATION_MAPPING,
    TF_MODEL_FOR_SEQUENCE_CLASSIFICATION_MAPPING,
    TextClassificationPipeline,
    pipeline,
)
from transformers.testing_utils import is_pipeline_test, nested_simplify, require_tf, require_torch, slow

from .test_pipelines_common import ANY


# These 2 model types require different inputs than those of the usual text models.
__UpperCAmelCase	       =	{'''LayoutLMv2Config''', '''LayoutLMv3Config'''}



@is_pipeline_test
class     lowerCAmelCase_		(  unittest.TestCase							):
       UpperCAmelCase__    : Dict       					=  MODEL_FOR_SEQUENCE_CLASSIFICATION_MAPPING
       UpperCAmelCase__    : List[str]       					=  TF_MODEL_FOR_SEQUENCE_CLASSIFICATION_MAPPING

       if model_mapping is not None:
              UpperCAmelCase__    : Optional[Any]       					=  {config: model for config, model in model_mapping.items() if config.__name__ not in _TO_SKIP}
       if tf_model_mapping is not None:
              UpperCAmelCase__    : Dict       					=  {
                  config: model for config, model in tf_model_mapping.items() if config.__name__ not in _TO_SKIP
              }
       @require_torch
       def  snake_case_	(      self	)					->		int:
          UpperCamelCase   :  List[str]						     =     pipeline(
              task='text-classification',      model='hf-internal-testing/tiny-random-distilbert',      framework='pt'	)

          UpperCamelCase   :  str						     =     text_classifier('This is great !'	)
          self.assertEqual(nested_simplify(SCREAMING_SNAKE_CASE_	),      [{'label': 'LABEL_0', 'score': 0.5_04}]	)

          UpperCamelCase   :  Dict						     =     text_classifier('This is great !',      top_k=2	)
          self.assertEqual(
              nested_simplify(SCREAMING_SNAKE_CASE_	),      [{'label': 'LABEL_0', 'score': 0.5_04}, {'label': 'LABEL_1', 'score': 0.4_96}]	)

          UpperCamelCase   :  List[Any]						     =     text_classifier(['This is great !', 'This is bad'],      top_k=2	)
          self.assertEqual(
              nested_simplify(SCREAMING_SNAKE_CASE_	),      [
                  [{'label': 'LABEL_0', 'score': 0.5_04}, {'label': 'LABEL_1', 'score': 0.4_96}],
                  [{'label': 'LABEL_0', 'score': 0.5_04}, {'label': 'LABEL_1', 'score': 0.4_96}],
              ],      )

          UpperCamelCase   :  List[Any]						     =     text_classifier('This is great !',      top_k=1	)
          self.assertEqual(nested_simplify(SCREAMING_SNAKE_CASE_	),      [{'label': 'LABEL_0', 'score': 0.5_04}]	)

          # Legacy behavior
          UpperCamelCase   :  str						     =     text_classifier('This is great !',      return_all_scores=SCREAMING_SNAKE_CASE_	)
          self.assertEqual(nested_simplify(SCREAMING_SNAKE_CASE_	),      [{'label': 'LABEL_0', 'score': 0.5_04}]	)

          UpperCamelCase   :  Tuple						     =     text_classifier('This is great !',      return_all_scores=SCREAMING_SNAKE_CASE_	)
          self.assertEqual(
              nested_simplify(SCREAMING_SNAKE_CASE_	),      [[{'label': 'LABEL_0', 'score': 0.5_04}, {'label': 'LABEL_1', 'score': 0.4_96}]]	)

          UpperCamelCase   :  List[Any]						     =     text_classifier(['This is great !', 'Something else'],      return_all_scores=SCREAMING_SNAKE_CASE_	)
          self.assertEqual(
              nested_simplify(SCREAMING_SNAKE_CASE_	),      [
                  [{'label': 'LABEL_0', 'score': 0.5_04}, {'label': 'LABEL_1', 'score': 0.4_96}],
                  [{'label': 'LABEL_0', 'score': 0.5_04}, {'label': 'LABEL_1', 'score': 0.4_96}],
              ],      )

          UpperCamelCase   :  Optional[int]						     =     text_classifier(['This is great !', 'Something else'],      return_all_scores=SCREAMING_SNAKE_CASE_	)
          self.assertEqual(
              nested_simplify(SCREAMING_SNAKE_CASE_	),      [
                  {'label': 'LABEL_0', 'score': 0.5_04},
                  {'label': 'LABEL_0', 'score': 0.5_04},
              ],      )
       @require_torch
       def  snake_case_	(      self	)					->		Optional[Any]:
          import torch

          UpperCamelCase   :  str						     =     pipeline(
              task='text-classification',      model='hf-internal-testing/tiny-random-distilbert',      framework='pt',      device=torch.device('cpu'	),      )

          UpperCamelCase   :  List[Any]						     =     text_classifier('This is great !'	)
          self.assertEqual(nested_simplify(SCREAMING_SNAKE_CASE_	),      [{'label': 'LABEL_0', 'score': 0.5_04}]	)
       @require_tf
       def  snake_case_	(      self	)					->		Dict:
          UpperCamelCase   :  List[Any]						     =     pipeline(
              task='text-classification',      model='hf-internal-testing/tiny-random-distilbert',      framework='tf'	)

          UpperCamelCase   :  str						     =     text_classifier('This is great !'	)
          self.assertEqual(nested_simplify(SCREAMING_SNAKE_CASE_	),      [{'label': 'LABEL_0', 'score': 0.5_04}]	)
       @slow
       @require_torch
       def  snake_case_	(      self	)					->		int:
          UpperCamelCase   :  str						     =     pipeline('text-classification'	)

          UpperCamelCase   :  str						     =     text_classifier('This is great !'	)
          self.assertEqual(nested_simplify(SCREAMING_SNAKE_CASE_	),      [{'label': 'POSITIVE', 'score': 1.0}]	)
          UpperCamelCase   :  List[str]						     =     text_classifier('This is bad !'	)
          self.assertEqual(nested_simplify(SCREAMING_SNAKE_CASE_	),      [{'label': 'NEGATIVE', 'score': 1.0}]	)
          UpperCamelCase   :  int						     =     text_classifier('Birds are a type of animal'	)
          self.assertEqual(nested_simplify(SCREAMING_SNAKE_CASE_	),      [{'label': 'POSITIVE', 'score': 0.9_88}]	)
       @slow
       @require_tf
       def  snake_case_	(      self	)					->		Tuple:
          UpperCamelCase   :  int						     =     pipeline('text-classification',      framework='tf'	)

          UpperCamelCase   :  Tuple						     =     text_classifier('This is great !'	)
          self.assertEqual(nested_simplify(SCREAMING_SNAKE_CASE_	),      [{'label': 'POSITIVE', 'score': 1.0}]	)
          UpperCamelCase   :  Union[str, Any]						     =     text_classifier('This is bad !'	)
          self.assertEqual(nested_simplify(SCREAMING_SNAKE_CASE_	),      [{'label': 'NEGATIVE', 'score': 1.0}]	)
          UpperCamelCase   :  int						     =     text_classifier('Birds are a type of animal'	)
          self.assertEqual(nested_simplify(SCREAMING_SNAKE_CASE_	),      [{'label': 'POSITIVE', 'score': 0.9_88}]	)
       def  snake_case_	(      self,      SCREAMING_SNAKE_CASE_,      SCREAMING_SNAKE_CASE_,      SCREAMING_SNAKE_CASE_	)					->		Union[str, Any]:
          UpperCamelCase   :  str						     =     TextClassificationPipeline(model=SCREAMING_SNAKE_CASE_,      tokenizer=SCREAMING_SNAKE_CASE_	)
          return text_classifier, ["HuggingFace is in", "This is another test"]






       def  snake_case_	(      self,      SCREAMING_SNAKE_CASE_,      SCREAMING_SNAKE_CASE_	)					->		Any:
          UpperCamelCase   :  List[str]						     =     text_classifier.model
          # Small inputs because BartTokenizer tiny has maximum position embeddings = 22
          UpperCamelCase   :  List[str]						     =     'HuggingFace is in'
          UpperCamelCase   :  Tuple						     =     text_classifier(SCREAMING_SNAKE_CASE_	)

          self.assertEqual(nested_simplify(SCREAMING_SNAKE_CASE_	),      [{'label': ANY(SCREAMING_SNAKE_CASE_	), 'score': ANY(SCREAMING_SNAKE_CASE_	)}]	)
          self.assertTrue(outputs[0]['label'] in model.config.idalabel.values()	)

          UpperCamelCase   :  List[Any]						     =     ['HuggingFace is in ', 'Paris is in France']
          UpperCamelCase   :  List[str]						     =     text_classifier(SCREAMING_SNAKE_CASE_	)
          self.assertEqual(
              nested_simplify(SCREAMING_SNAKE_CASE_	),      [{'label': ANY(SCREAMING_SNAKE_CASE_	), 'score': ANY(SCREAMING_SNAKE_CASE_	)}, {'label': ANY(SCREAMING_SNAKE_CASE_	), 'score': ANY(SCREAMING_SNAKE_CASE_	)}],      )
          self.assertTrue(outputs[0]['label'] in model.config.idalabel.values()	)
          self.assertTrue(outputs[1]['label'] in model.config.idalabel.values()	)

          # Forcing to get all results with `top_k=None`
          # This is NOT the legacy format
          UpperCamelCase   :  Optional[int]						     =     text_classifier(SCREAMING_SNAKE_CASE_,      top_k=SCREAMING_SNAKE_CASE_	)
          UpperCamelCase   :  str						     =     len(model.config.idalabel.values()	)
          self.assertEqual(
              nested_simplify(SCREAMING_SNAKE_CASE_	),      [[{'label': ANY(SCREAMING_SNAKE_CASE_	), 'score': ANY(SCREAMING_SNAKE_CASE_	)}] * N, [{'label': ANY(SCREAMING_SNAKE_CASE_	), 'score': ANY(SCREAMING_SNAKE_CASE_	)}] * N],      )

          UpperCamelCase   :  str						     =     {'text': 'HuggingFace is in ', 'text_pair': 'Paris is in France'}
          UpperCamelCase   :  Union[str, Any]						     =     text_classifier(SCREAMING_SNAKE_CASE_	)
          self.assertEqual(
              nested_simplify(SCREAMING_SNAKE_CASE_	),      {'label': ANY(SCREAMING_SNAKE_CASE_	), 'score': ANY(SCREAMING_SNAKE_CASE_	)},      )
          self.assertTrue(outputs['label'] in model.config.idalabel.values()	)

          # This might be used a text pair, but tokenizer + pipe interaction
          # makes it hard to understand that it's not using the pair properly
          # https://github.com/huggingface/transformers/issues/17305
          # We disabled this usage instead as it was outputting wrong outputs.
          UpperCamelCase   :  List[str]						     =     [['HuggingFace is in ', 'Paris is in France']]
          with self.assertRaises(SCREAMING_SNAKE_CASE_	):
             text_classifier(SCREAMING_SNAKE_CASE_	)

          # This used to be valid for doing text pairs
          # We're keeping it working because of backward compatibility
          UpperCamelCase   :  List[str]						     =     text_classifier([[['HuggingFace is in ', 'Paris is in France']]]	)
          self.assertEqual(
              nested_simplify(SCREAMING_SNAKE_CASE_	),      [{'label': ANY(SCREAMING_SNAKE_CASE_	), 'score': ANY(SCREAMING_SNAKE_CASE_	)}],      )
          self.assertTrue(outputs[0]['label'] in model.config.idalabel.values()	)



