/*
 * 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 qualifying;

import java.util.*;

public class RecycledNumbers {
	
	public static void main(String[] args) {
		Scanner in = new Scanner(System.in);
		
		final int NUM_TESTS = in.nextInt();
		for (int t = 1; t <= NUM_TESTS; ++t) {
			final int A = in.nextInt();
			final int B = in.nextInt();
			
			final int numDigits = Integer.toString(A).length();
			
			Set<String> pairs = new HashSet<String>();
			for (int n = A; n < B; ++n) {
				for (int i = 1; i < numDigits; ++i) {
					int m = recycle(n, i);
					if (n < m && m <= B)
						pairs.add(n + "," + m);
				}
			}
			
			System.out.println("Case #" + t + ": " + pairs.size());
		}
		
	}
	
	
	// Recycles n by moving the first i digits to the back
	private static int recycle(int n, int i) {
		String iStr = Integer.toString(n);
		String newStr = iStr.substring(i) + iStr.substring(0,i);
		return Integer.parseInt(newStr);
	}
}