import java.io.*;
import java.math.BigInteger;
import java.util.*;

import org.jfree.data.function.PowerFunction2D;

public class r2a
{

	Map numMap = new HashMap();
    int output = 0;

    /**
     * @param args
     */
    public static void main(String[] args)
    {
        r2a mk = new r2a();
        try {
            FileInputStream fstream = new FileInputStream("d:/cjinput.txt");
            DataInputStream in = new DataInputStream(fstream);
            BufferedReader br = new BufferedReader(new InputStreamReader(in));
            String str;
            int i = 0;
            while ((str = br.readLine()) != null) {
            	int begin=0,end = 0;
                i++;
                if (i == 1)
                    continue;
                mk.numMap = new HashMap();
                StringTokenizer strTok = new StringTokenizer(str, " ");
                while (strTok.hasMoreTokens()) {
                	begin =  Integer.parseInt(((String) strTok.nextToken()));
                    end = Integer.parseInt(((String) strTok.nextToken()));
                }

                mk.evaluate(i, begin, end);

            }
            in.close();
        }
        catch (Exception e) {
            System.err.println(e);
        }

    }

    private void evaluate(int rowNum, int begin, int end)
    {
    	output=0;
    	for (int i = begin; i<= end; i++) {
    		if(numMap.containsKey(Integer.valueOf(i)))
    			continue;
    		List l = getPairElems(i);
    		if (l.size() > 0) {
    			Iterator itr = l.iterator();
    			int ctr = 0;
    			ArrayList tempList = new ArrayList();
    			while (itr.hasNext()) {
    				int next = ((Integer)itr.next()).intValue();
    				if (next <= end && next > i) {
    					numMap.put(Integer.valueOf(next), i);
    					tempList.add(next);
    					ctr++;
    				}
    			}
    			ctr = getCounter(ctr+1,2);
/*    			if (tempList.size() > 0 || ctr > 0)
    				System.out.println("DD: " + i + ": " + tempList +" ; ctr = " + ctr);*/
    			output = output + ctr;
    		}
    		
    	}

        String outputStr = "Case #" + (rowNum -1) + ": " + output;
        
        System.out.println(outputStr);
    }

	private int getCounter(int n, int r) {
		int ret = 1;
		int nfactorial =1;
		for (int i = 2; i<=n; i++) {
			nfactorial = i*nfactorial;
		}
		int nrfact =1;
		for (int i = 2; i<=n-r; i++) {
			nrfact = i*nrfact;
		}
		
		return nfactorial/(2*nrfact);
	}

	private ArrayList getPairElems(int num) {
		ArrayList retList = new ArrayList();
		int temp = num;
		if (num/10 == 0)
			return retList;
		
		String str = String.valueOf(num);
		
		int arr[] = new int[str.length()];
		int x = str.length();
		while (temp/10 > 0) {
			arr[x-1] = temp%10;
			temp=temp/10;
			x--;
		}
		arr[0]=temp;
		
		int size = arr.length;
		for (int pos = size -1; pos >0; pos--) {
			if(arr[pos] == 0)
				continue;
			int pairNum = 0;
			int multiplier =1;
			for (int c=0; c < size-1; c++) {
				multiplier = multiplier*10;
			}
			pairNum = pairNum + (arr[pos]*multiplier);
			for(int ctr = pos+1, i=1; i < size; i++,ctr++) {
				if (ctr == size)
					ctr=0;
				if (multiplier!=1)
					multiplier=multiplier/10;
				pairNum = pairNum + (arr[ctr]*multiplier);
			}
			if (pairNum != num)
				retList.add(Integer.valueOf(pairNum));			
		}
		
		return retList;
	}
}

package gcj;

import java.io.BufferedReader;
import java.io.FileReader;

public class Gcj {
	private static final String path = "/home/me/dev/gcj/";
	private BufferedReader br = null;
	private String[] tokens;
	private int itoken,ntokens;
	
	static public void err(String e) {
		System.out.println("\n**\n"+e+" :-)\n");
		System.exit(1);
	}
	
	public Gcj(String filename) {
		try {
			br = new BufferedReader(new FileReader(path + filename));
		}
		catch (Exception e) {
			e.printStackTrace();
		}
	}
	
	public String rawLine() {
		String line = null;
		
		try {
			line = br.readLine();
		}
		catch (Exception e) {
			e.printStackTrace();
		}
		return line;
	}
	
	
	public String[] readLine() {
		
		String line = rawLine();
		
		if (line == null) {
			tokens = null;
			ntokens = 0;
		}
		else {
			tokens = line.trim().split("\\s+");
			ntokens = tokens.length;
		}
		itoken = 0;
		
		return tokens;
	}
	
	private String nextToken() {
		String err = null;
		if (ntokens < 1) err = "There is no token";
		else if (itoken >= ntokens) err = "No more token";
		else {
			return tokens[itoken++];
		}
		
		Gcj.err(err);
		return null;
	}
	
	public String sToken() {
		return nextToken();
	}

	public String[] sBunch() {
		String[] l = new String[ntokens-itoken];
		int i=0;
		while (itoken < ntokens) l[i++] = tokens[itoken++];
		return l;
	}

	public char cToken() {
		return nextToken().charAt(0);
	}

	public char[] cBunch() {
		char[] l = new char[ntokens-itoken];
		int i = 0;
		while (itoken < ntokens) l[i++] = tokens[itoken++].charAt(0);
		return l;
	}

	public int iToken() {
		return Integer.parseInt(nextToken());
	}

	public int[] iBunch() {
		int[] l = new int[ntokens-itoken];
		int i = 0;
		while (itoken < ntokens) l[i++] = Integer.parseInt(tokens[itoken++]);
		return l;
	}
	
	public long lToken() {
		return Long.parseLong(nextToken());
	}

	public long[] lBunch() {
		long[] l = new long[ntokens-itoken];
		int i = 0;
		while (itoken < ntokens) l[i++]  = Long.parseLong(tokens[itoken++]);
		return l;
	}
	
	public double dToken() {
		return Double.parseDouble(nextToken());
	}

	public double[] dBunch() {
		double[] l = new double[ntokens-itoken];
		int i = 0;
		while (itoken < ntokens) l[i++] = Double.parseDouble(tokens[itoken++]);
		return l;
	}

	
	// -- utils
	
	// keep leading zeroes...
	public int[] breakdownNumber(String s) {
		int n = (s == null ? 0 : s.length());
		int[] aa = new int[n];
		if (n > 0) {
			char[] cc = s.toCharArray();
			for (int i=0 ; i<n ; i++) {
				aa[i] = cc[i] - '0';
			}
		}
		return aa;
	}
	
	
	// --
	
	public void terminate() {
		try {
			if (br != null) br.close();
		}
		catch (Exception e) {
			e.printStackTrace();
		}
		System.out.println("");
	}
	
	
	// --- OUTPUT ---
	
	public static void outcase(int n, boolean rc) {
		System.out.print("Case #" + n + ": ");
		if (rc) System.out.print("\n");
	}
	
}
