





"""simple docstring"""




def 			a_							(				_lowercase = 1000  ):
						_UpperCamelCase     :   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)
						_UpperCamelCase     :   List[str]      =       [0, 0, 6, 6, 5, 5, 5, 7, 6, 6]

						_UpperCamelCase     :   List[Any]      =       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 .hash_table import HashTable
from .number_theory.prime_numbers import is_prime, next_prime




class 					_a		( _lowerCAmelCase							):






				def __init__(					self						:       Tuple,					*lowerCAmelCase__						:       Tuple,					**lowerCAmelCase__						:       Optional[int]				)      -> Union[str, Any]:




										'''simple docstring'''



										super().__init__(*lowerCAmelCase__,					**lowerCAmelCase__				)






				def 							snake_case      (					self						:       Any,					lowerCAmelCase__						:       Dict,					lowerCAmelCase__						:       Tuple				)      -> Optional[Any]:




										'''simple docstring'''



										_UpperCamelCase     :   Tuple      =       (
										    next_prime(value % self.size_table				)
										    if not is_prime(value % self.size_table				)
										    else value % self.size_table
										)  # gt = bigger than
										return next_prime_gt - (data % next_prime_gt)






				def 							snake_case      (					self						:       int,					lowerCAmelCase__						:       Any,					lowerCAmelCase__						:       List[Any],					lowerCAmelCase__						:       Tuple				)      -> Any:




										'''simple docstring'''



										return (increment * self.__hash_function_a(lowerCAmelCase__,					lowerCAmelCase__				)) % self.size_table






				def 							snake_case      (					self						:       Dict,					lowerCAmelCase__						:       str,					lowerCAmelCase__						:       Optional[Any]=None				)      -> Union[str, Any]:




										'''simple docstring'''



										_UpperCamelCase     :   Tuple      =       1
										_UpperCamelCase     :   Dict      =       self.hash_function(lowerCAmelCase__				)

										while self.values[new_key] is not None and self.values[new_key] != key:
																_UpperCamelCase     :   Optional[int]      =       (
																    self.__hash_double_function(lowerCAmelCase__,					lowerCAmelCase__,					lowerCAmelCase__				)
																    if self.balanced_factor() >= self.lim_charge
																    else None
																)
																if new_key is None:
																						break
																else:
																						i += 1

										return new_key



