"""simple docstring"""





def     a_					(				_lowerCAmelCase  :			List[str] = 1000					):





       '''simple docstring'''

       lowercase__      :		Optional[int]          =     [0, 3, 3, 5, 4, 4, 3, 5, 5, 4, 3, 6, 6, 8, 8, 7, 7, 9, 8, 8]
       # number of letters in twenty, thirty, ..., ninety (0 for numbers less than
       # 20 due to inconsistency in teens)
       lowercase__      :		Union[str, Any]          =     [0, 0, 6, 6, 5, 5, 5, 7, 6, 6]

       lowercase__      :		int          =     0

       for i in range(1       ,			n + 1					):
              if i < 1000:
                     if i >= 100:
                            # add number of letters for "n hundred"
                            count += ones_counts[i // 100] + 7

                            if i % 100 != 0:
                                   # add number of letters for "and" if number is not multiple
                                   # of 100
                                   count += 3

                     if 0 < i % 100 < 20:
                            # add number of letters for one, two, three, ..., nineteen
                            # (could be combined with below if not for inconsistency in
                            # teens)
                            count += ones_counts[i % 100]
                     else:
                            # add number of letters for twenty, twenty one, ..., ninety
                            # nine
                            count += ones_counts[i % 10]
                            count += tens_counts[(i % 100 - i % 10) // 10]
              else:
                     count += ones_counts[i // 1000] + 8
       return count


if __name__ == "__main__":
       print(solution(int(input().strip())))


"""simple docstring"""





from ..utils import DummyObject, requires_backends


class 					UpperCAmelCase_     (   metaclass=_a):
      lowerCamelCase__		:   List[str]			  =  ["torch", "transformers", "k_diffusion"]


      def __init__(       self		,      *a		,      **a							)	-> Dict:
             requires_backends(self		,      ['torch', 'transformers', 'k_diffusion']							)


      @classmethod
      def 		_UpperCAmelCase	(       cls		,      *a		,      **a							)	-> Tuple:
             requires_backends(cls		,      ['torch', 'transformers', 'k_diffusion']							)


      @classmethod
      def 		_UpperCAmelCase	(       cls		,      *a		,      **a							)	-> Any:
             requires_backends(cls		,      ['torch', 'transformers', 'k_diffusion']							)

