




def       SCREAMING_SNAKE_CASE			( __UpperCamelCase    :		int = 1000   )						->							int:
    UpperCAmelCase_											=  [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_											=  [0, 0, 6, 6, 5, 5, 5, 7, 6, 6]

    UpperCAmelCase_											=  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())))











import itertools




def       SCREAMING_SNAKE_CASE			( __UpperCamelCase    :		Tuple   )						->							List[Any]:
    return (
        int(''''''.join(combination[0:2]   )   ) * int(''''''.join(combination[2:5]   )   )
        == int(''''''.join(combination[5:9]   )   )
    ) or (
        int(''''''.join(combination[0]   )   ) * int(''''''.join(combination[1:5]   )   )
        == int(''''''.join(combination[5:9]   )   )
    )




def       SCREAMING_SNAKE_CASE			( )						->							Optional[Any]:
    return sum(
        {
            int(''''''.join(pandigital[5:9]   )   )
            for pandigital in itertools.permutations('''123456789'''   )
            if is_combination_valid(__UpperCamelCase   )
        }   )


if __name__ == "__main__":
 print(solution())





