

import os
import unittest

import pytest
from parameterized import parameterized

from transformers.testing_utils import require_torch, require_torch_gpu, slow, torch_device


# skipping in unittest tests

_a 	=       [(1,)]







def _a			(	)   ->   Union[str, Any]:

 """simple docstring"""






 __lowerCAmelCase:       Any            =				bool(os.getenv('RUN_SLOW'   , 0		)		)
 if run_slow:
  assert True
 else:
  assert False, "should have been skipped"







def _a			(	)   ->   Union[str, Any]:

 """simple docstring"""






 __lowerCAmelCase:       Optional[Any]            =				bool(os.getenv('RUN_SLOW'   , 0		)		)
 if run_slow and torch_device == "cuda":
  assert True
 else:
  assert False, "should have been skipped"






@require_torch
class 							A_			(		unittest.TestCase ):


     @slow
     @require_torch_gpu
     def   UpperCAmelCase  (							self      :		Union[str, Any] )							->     Optional[Any]:
      check_slow_torch_cuda()


     @require_torch_gpu
     @slow
     def   UpperCAmelCase  (							self      :		Any )							->     List[str]:
      check_slow_torch_cuda()


     @parameterized.expand(__snake_case )
     @slow
     def   UpperCAmelCase  (							self      :		Optional[Any]      ,  UpperCAmelCase      :		Union[str, Any]=None )							->     List[Any]:
      check_slow()







@slow
@require_torch_gpu
def _a			(	)   ->   Optional[Any]:

 """simple docstring"""






 check_slow_torch_cuda()







@require_torch_gpu
@slow
def _a			(	)   ->   Any:

 """simple docstring"""






 check_slow_torch_cuda()







@slow
@pytest.mark.parametrize('param'   , [1]		)
def _a			(	SCREAMING_SNAKE_CASE		:      Union[str, Any]		)   ->   Any:

 """simple docstring"""






 check_slow()







@pytest.mark.parametrize('param'   , [1]		)
@slow
def _a			(	SCREAMING_SNAKE_CASE		:      List[str]		)   ->   Dict:

 """simple docstring"""






 check_slow()








def _a			(	SCREAMING_SNAKE_CASE		:      int = 10_00		)   ->   int:

 """simple docstring"""






 __lowerCAmelCase:       Union[str, Any]            =				[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)
 __lowerCAmelCase:       Union[str, Any]            =				[0, 0, 6, 6, 5, 5, 5, 7, 6, 6]

 __lowerCAmelCase:       Optional[int]            =				0

 for i in range(1   , n + 1		):
  if i < 10_00:
   if i >= 1_00:
    # add number of letters for "n hundred"
    count += ones_counts[i // 1_00] + 7

    if i % 1_00 != 0:
     # add number of letters for "and" if number is not multiple
     # of 100
     count += 3

   if 0 < i % 1_00 < 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 % 1_00]
   else:
    # add number of letters for twenty, twenty one, ..., ninety
    # nine
    count += ones_counts[i % 10]
    count += tens_counts[(i % 1_00 - i % 10) // 10]
  else:
   count += ones_counts[i // 10_00] + 8
 return count


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





