P10959 The Mystery of the Moon.

If a decimal number can be divided by the sum of its digits, then this number is called a "Moon number". Given integers $L$ and $R$, you need to compute how many "Moon numbers" there are in the closed interval $[L, R]$.

Multiple sets of testdata. Each set is on one line and contains two integers $L$ and $R$.

For each set of data, output one integer per line, representing the number of Moon numbers.

Constraints: It is guaranteed that $1 \le L, R < 2^{31}$, and there are no more than $3000$ testdata sets in a single test. Translated by ChatGPT 5