/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package recyclednumbers;

import java.util.HashSet;

/**
 *
 * @author vandit
 */
public class RecycleNumbers {

    private HashSet<String> numbers = new HashSet<String>();
    private HashSet<String> initialTempNumbers = new HashSet<String>();
    private HashSet<String> finalTempNumbers = new HashSet<String>();

    HashSet<Pair> numberPairs = new HashSet<Pair>();


    private void findRecycledNumbers(int start, int end, int places) {


        for (int i = start; i <= end; i++) {
            String initialNumber = Integer.toString(i);
            //if (!(numbers.contains(initialNumber) || finalTempNumbers.contains(initialNumber))) {

                StringBuffer tempNumber = new StringBuffer(initialNumber);
                int len = tempNumber.length();
                int startIndexToMove = len - places;
                String tempString = tempNumber.substring(startIndexToMove);
                if ((places == 1 && tempString.equals("0")) || tempString.charAt(0) == '0') {
                    continue;
                }
                tempNumber.delete(startIndexToMove, len);
                String finalTempNumber = tempString + tempNumber.toString();

                if (! (finalTempNumber.equals(initialNumber) || Integer.parseInt(finalTempNumber) > end || Integer.parseInt(finalTempNumber) < Integer.parseInt(initialNumber))) {
                    numbers.add(initialNumber);
                    finalTempNumbers.add(finalTempNumber);
                    Pair pair = new Pair(finalTempNumber,initialNumber);
                    numberPairs.add(pair);
                }
            }

        

    }

    public HashSet<Pair> findAllRecycledNumbers(int start, int end) {
        int length = Integer.toString(start).length();
        for (int i = 1; i < length; i++) {
            findRecycledNumbers(start, end, i);
        }
        return numberPairs;
    }
}

package qualification;

import java.io.File;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.Scanner;

public class C {

	String solve(Scanner in) throws IOException {
		int A = in.nextInt(), B = in.nextInt(), pow = 1, pairs = 0;
		
		while(10*pow <= A)
			pow *= 10;
		
		boolean[] seen = new boolean[B+1];
		for(int n = A; n <= B; n++)
			if(!seen[n]) {
				int count = 0;
				for(int m = n; m > B || !seen[m]; m = m/10 + m%10 * pow)
					if(A <= m && m <= B) {
						seen[m] = true;
						count++;
					}
				pairs += count * (count-1) / 2;
			}
		
		return ""+pairs;
	}
	
/*************************************************************************************************/
	
	public static void main(String[] args) throws IOException {
		for(File f : new File(".").listFiles())
			if(f.isFile() && f.getName().startsWith(C.class.getSimpleName() + "-")
					      && f.getName().endsWith(".in")) {
				
				Scanner in = new Scanner(new FileReader(f));
				PrintWriter out = new PrintWriter(new FileWriter(f.getName() + ".out"));
				
				int cases = in.nextInt(); in.nextLine();
				for(int caseno = 1; caseno <= cases; caseno++)
					out.printf("Case #%d: %s%n", caseno, new C().solve(in));
				
				out.close();
			}
	}
}
