"""simple docstring"""







import unittest
import warnings
from dataclasses import dataclass

from transformers.convert_slow_tokenizer import SpmConverter
from transformers.testing_utils import get_tests_dir


@dataclass
class 			_lowercase		:
				lowerCamelCase__						=       4_2


class 			_lowercase		(   unittest.TestCase  ):

				def        A (     self       :    Tuple     ):


										'''simple docstring'''
										UpperCAmelCase__						=		get_tests_dir("""fixtures/test_sentencepiece.model"""     )
										UpperCAmelCase__						=		get_tests_dir("""fixtures/test_sentencepiece_with_bytefallback.model"""     )

										UpperCAmelCase__						=		FakeOriginalTokenizer(vocab_file=_lowercase     )

										with warnings.catch_warnings(record=_lowercase     ) as w:
																UpperCAmelCase__						=		SpmConverter(_lowercase     )
										self.assertEqual(len(_lowercase     )       ,    0     )

										UpperCAmelCase__						=		FakeOriginalTokenizer(vocab_file=_lowercase     )

										with warnings.catch_warnings(record=_lowercase     ) as w:
																UpperCAmelCase__						=		SpmConverter(_lowercase     )
										self.assertEqual(len(_lowercase     )       ,    1     )

										self.assertIn(
										    """The sentencepiece tokenizer that you are converting to a fast tokenizer uses the byte fallback option"""
										    """ which is not implemented in the fast tokenizers."""       ,    str(w[0].message     )       ,    )





"""simple docstring"""







from __future__ import annotations

import sys


def   a__      (		UpperCAmelCase__       :			int			)->	int:
						if n < 0:
												raise ValueError("""Negative arguments are not supported"""			)
						return _fib(UpperCAmelCase__			)[0]


def   a__      (		UpperCAmelCase__       :			int			)->	tuple[int, int]:
						if n == 0:  # (F(0), F(1))
												return (0, 1)

						# F(2n) = F(n)[2F(n+1) − F(n)]
						# F(2n+1) = F(n+1)^2+F(n)^2
						UpperCAmelCase__	,      UpperCAmelCase__						=		_fib(n // 2			)
						UpperCAmelCase__						=		a * (b * 2 - a)
						UpperCAmelCase__						=		a * a + b * b
						return (d, c + d) if n % 2 else (c, d)


if __name__ == "__main__":
						UpperCamelCase_       :       int							   =		int(sys.argv[1])
						print(F"""fibonacci({n}) is {fibonacci(n)}""")

