Arithmetic Digit Numbers 2

A positive integer $X$ is an arithmetic digit number when its digits, read from left to right, form an arithmetic sequence. An arithmetic sequence is a sequence in which the difference between two neighboring terms is always the same. A sequence of one or two terms satisfies that condition, so every one-digit number and every two-digit number is an arithmetic digit number.

Given $N$, write a program that prints how many arithmetic digit numbers are at least $1$ and at most $N$.

The first line contains a natural number $N$ that is at most $10^{18}$.

Print on the first line the count of arithmetic digit numbers that are at least $1$ and at most $N$.