P4127 [AHOI2009] Similar Distribution
Description
Given two numbers $a, b$, find the count of integers in $[a, b]$ whose sum of digits divides the number itself.
Input Format
One line, two integers $a$ and $b$.
Output Format
A single integer representing the answer.
Explanation/Hint
For all testdata, $1 \le a \le b \le 10^{18}$.
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