import java.util.Arrays;
import java.util.Scanner;

public class DobriChisla {
    public static void main(String[] args){
        Scanner in = new Scanner(System.in);
        int A = in.nextInt();
        int B = in.nextInt();
        int currentNum = 0;
        int currentDigit = 0;
        int count = 1;


        for (int i = A; i <= B; i++){
            currentNum = i ;
            System.out.println("currentNum = " + currentNum);
            char[] digits = String.valueOf(i).toCharArray();
            System.out.println("digits array = " + Arrays.toString(digits));

            for(int j = 0; j < digits.length; j++){
                currentDigit = Character.getNumericValue(digits[i]);
                System.out.println("currentDigit = " + currentDigit);
                if(currentNum / currentDigit == 0){
                    count ++;
                    System.out.println(count);
                }
            }

        }
    }
}