




def       __lowerCAmelCase (   snake_case__ = 1_000						):
			__UpperCamelCase				:      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)
			__UpperCamelCase				:      Tuple									=       [0, 0, 6, 6, 5, 5, 5, 7, 6, 6]

			__UpperCamelCase				:      Any									=       0

			for i in range(1 ,				n + 1						):
						if i < 1_000:
									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 // 1_000] + 8
			return count


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









'''simple docstring'''






from doctest import testmod
from math import sqrt

def       __lowerCAmelCase (   snake_case__						):
			__UpperCamelCase				:      list[int]									=       []
			if num < 1:
						return facs
			facs.append(1						)
			if num == 1:
						return facs
			facs.append(snake_case__						)
			for i in range(2 ,				int(sqrt(snake_case__						)						) + 1						):
						if num % i == 0:  # If i is a factor of num
									facs.append(snake_case__						)
									__UpperCamelCase				:      List[str]									=       num // i  # num//i is the other factor of num
									if d != i:  # If d and i are distinct
												facs.append(snake_case__						)  # we have found another factor
			facs.sort()
			return facs


if __name__ == "__main__":
				testmod(name='''factors_of_a_number''', verbose=True)



