package fixjava;

public class StringUtils {

	/** Repeat the given string the requested number of times. */
	public static String repeat(String str, int numTimes) {
		StringBuilder buf = new StringBuilder(Math.max(0, str.length() * numTimes));
		for (int i = 0; i < numTimes; i++)
			buf.append(str);
		return buf.toString();
	}

	/**
	 * Pad the left hand side of a field with the given character. Always adds at least one pad character. If the length of str is
	 * greater than numPlaces-1, then the output string will be longer than numPlaces.
	 */
	public static String padLeft(String str, char padChar, int numPlaces) {
		int bufSize = Math.max(numPlaces, str.length() + 1);
		StringBuilder buf = new StringBuilder(Math.max(numPlaces, str.length() + 1));
		buf.append(padChar);
		for (int i = 1, mi = bufSize - str.length(); i < mi; i++)
			buf.append(padChar);
		buf.append(str);
		return buf.toString();
	}

	/**
	 * Pad the right hand side of a field with the given character. Always adds at least one pad character. If the length of str is
	 * greater than numPlaces-1, then the output string will be longer than numPlaces.
	 */
	public static String padRight(String str, char padChar, int numPlaces) {
		int bufSize = Math.max(numPlaces, str.length() + 1);
		StringBuilder buf = new StringBuilder(Math.max(numPlaces, str.length() + 1));
		buf.append(str);
		buf.append(padChar);
		while (buf.length() < bufSize)
			buf.append(padChar);
		return buf.toString();
	}

	/** Intern all strings in an array, skipping null elements. */
	public static String[] intern(String[] arr) {
		for (int i = 0; i < arr.length; i++)
			arr[i] = arr[i].intern();
		return arr;
	}

	/** Intern a string, ignoring null */
	public static String intern(String str) {
		return str == null ? null : str.intern();
	}

}

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

import java.util.HashSet;
import java.util.Scanner;
import java.util.Set;

/**
 *
 * @author topik
 */
public class RecycledNumbers
{

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args)
    {
        final Scanner scanner = new Scanner(System.in);
        final int testCases = scanner.nextInt();
        for( int tc=1; tc <= testCases; tc++ )
        {
            final int a = scanner.nextInt();
            final int b = scanner.nextInt();
            int total = 0;
            
            for( int n = a > 10 ? a : 10; n < b; n++ )
            {
                final Set<Integer> seen = new HashSet<Integer>();
                final String nStr = Integer.toString(n);
                final int nStrLen = nStr.length();
                for( int replace = 1; replace < nStrLen; replace++ )
                {
                    final String mStr = nStr.substring(nStrLen - replace) + nStr.substring(0, nStrLen - replace);
                    final int m = Integer.parseInt(mStr);
                    if( m <= b && m > n && ! seen.contains(m) )
                    {
                        seen.add(m);
                        total++;
                    }
                }
            }
            
            System.out.println("Case #" + tc + ": " + total);
        }
    }
}
