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#include <iostream>

int main() {
    int lower_bound;
    int upper_bound;

    std::cin >> lower_bound;
    std::cin >> upper_bound;

    int count = 0;
    int number = 0;
    bool isPotyczkowNumber = true;

    for(int i = 1; i <= upper_bound; i++) {
        number = i;
        isPotyczkowNumber = true;

        while (number > 0) {
            if (number % 10 == 0 || i % (number % 10) != 0) {
                isPotyczkowNumber = false;
                break;
            } else {
                number = number / 10;
            }
        }

        if (isPotyczkowNumber)
            count++;
    }

    std::cout << count << std::endl;
}