import java.util.Scanner;
import java.io.*;
import java.lang.Math;


public class C{
	public static int recycle(String str){
		String[] numbers = str.split(" ");
		int min = Integer.parseInt(numbers[0]);
		int max = Integer.parseInt(numbers[1]);
		int ret = 0;

		for(int i = min; i < max; i++){
			String num = i + "";
			int len = num.length();
			int k = i;
			for(int j = 1; j < len; j++){
				k = (k/10) + (int)java.lang.Math.pow(10.0,(double)(len-1))*(k%10);
				if (k > i && k <= max)
					ret++;
				else if(k == i)
					break;
			}
		}

		return ret;
	}

	public static void main(String[] args){
		Scanner sc = null;
		String next;
		int out;
		try{
			sc = new Scanner(new File("C-large.in"));
			int cases = Integer.parseInt(sc.nextLine());
			int current = 0;
			

			FileWriter fs = new FileWriter("output.txt");
			BufferedWriter buff = new BufferedWriter(fs);
			while(current < cases){
				next = sc.nextLine();
				current++;
				out = recycle(next);
				buff.write("Case #" + current + ": " + out + "\n");
			}
			buff.close();
		}
		catch(Exception ex){}
	}
}
import java.io.*;
import java.util.*;

public class C extends CodeJammer {

	public void process() throws IOException {
		long[] input = reader.readLongArray();
		long a = input[0];
		long b = input[1];
		int digits = 0;
		long a1 = a;
		while (a1>0) {
				  a1 /= 10;
				  digits++;
		}
		long total = 0;
		for (long x=a; x<=b; x++) {
			total += count(x,a,b, digits);
		}
		output(total);
	}

	public long count(long x, long a, long b, int d) {
		Set<Long> s = new HashSet<Long>();
		long y = x;
		for (int i=1; i<d; i++) {
			y = rotate(y,d);
			if (y>x && y>=a && y<=b) s.add(y);
  		}
		return s.size();		
	}

	public long rotate(long y, int d) {
		long digit = y%10;
		long rest = y/10;
		digit *= Math.pow(10,d-1);
		return digit + rest;
	}

	public static void main(String[] args) {
			  C c = new C();
			  c.run(args);
	}

}
