package jp.funnything.competition.util;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import java.math.BigDecimal;
import java.math.BigInteger;

import org.apache.commons.io.IOUtils;

public class QuestionReader {
    private final BufferedReader _reader;

    public QuestionReader( final File input ) {
        try {
            _reader = new BufferedReader( new FileReader( input ) );
        } catch ( final FileNotFoundException e ) {
            throw new RuntimeException( e );
        }
    }

    public void close() {
        IOUtils.closeQuietly( _reader );
    }

    public String read() {
        try {
            return _reader.readLine();
        } catch ( final IOException e ) {
            throw new RuntimeException( e );
        }
    }

    public BigDecimal[] readBigDecimals() {
        return readBigDecimals( " " );
    }

    public BigDecimal[] readBigDecimals( final String separator ) {
        final String[] tokens = readTokens( separator );

        final BigDecimal[] values = new BigDecimal[ tokens.length ];
        for ( int index = 0 ; index < tokens.length ; index++ ) {
            values[ index ] = new BigDecimal( tokens[ index ] );
        }

        return values;
    }

    public BigInteger[] readBigInts() {
        return readBigInts( " " );
    }

    public BigInteger[] readBigInts( final String separator ) {
        final String[] tokens = readTokens( separator );

        final BigInteger[] values = new BigInteger[ tokens.length ];
        for ( int index = 0 ; index < tokens.length ; index++ ) {
            values[ index ] = new BigInteger( tokens[ index ] );
        }

        return values;
    }

    public int readInt() {
        final int[] values = readInts();

        if ( values.length != 1 ) {
            throw new IllegalStateException( "Try to read single interger, but the line contains zero or multiple values" );
        }

        return values[ 0 ];
    }

    public int[] readInts() {
        return readInts( " " );
    }

    public int[] readInts( final String separator ) {
        final String[] tokens = readTokens( separator );

        final int[] values = new int[ tokens.length ];
        for ( int index = 0 ; index < tokens.length ; index++ ) {
            values[ index ] = Integer.parseInt( tokens[ index ] );
        }

        return values;
    }

    public long readLong() {
        final long[] values = readLongs();

        if ( values.length != 1 ) {
            throw new IllegalStateException( "Try to read single interger, but the line contains zero or multiple values" );
        }

        return values[ 0 ];
    }

    public long[] readLongs() {
        return readLongs( " " );
    }

    public long[] readLongs( final String separator ) {
        final String[] tokens = readTokens( separator );

        final long[] values = new long[ tokens.length ];
        for ( int index = 0 ; index < tokens.length ; index++ ) {
            values[ index ] = Long.parseLong( tokens[ index ] );
        }

        return values;
    }

    public String[] readTokens() {
        return readTokens( " " );
    }

    public String[] readTokens( final String separator ) {
        return read().split( separator );
    }
}

import java.util.Scanner;
import java.io.File;
import java.io.FileNotFoundException;

/**
 * Created by IntelliJ IDEA.
 * User: Ran
 * Date: Apr 14, 2012
 * Time: 3:46:24 AM
 * To change this template use File | Settings | File Templates.
 */
public class Recycled {

   private static int numDigits;

   private static int mult[] = {
         10, 100, 1000, 10000, 100000, 1000000, 10000000
   };

   private static int shift (int x)  {

      int lastDigit = x % 10;
      x = x / 10;
      x += lastDigit * mult[numDigits-2];

      return x;
   }
   
   private static boolean isPair (int x, int y) {

      for (int i = 0; i < numDigits - 1; i++) {
         x = shift (x);
         if (x == y)
            return true;
      }

      return false;
   }

   public static void main (String[] args) {

      Scanner s = null;
      try {
//         s = new Scanner (new File ("C-small-test.in"));
         s = new Scanner (new File ("C-small-attempt0.in"));
      } catch (FileNotFoundException e) {
         e.printStackTrace ();
      }

      int t = s.nextInt();

      // Traverse all test cases.
      for (int test = 1; test <= t; test++) {

         int a = s.nextInt();
         int b = s.nextInt();
         numDigits = (int)(Math.floor (Math.log10 (a))) + 1;

         int numPairs = 0;

         for (int i = a; i < b; i++)
            for (int j = i + 1; j <= b; j++)
               if (isPair (i, j))
                  numPairs++;

         System.out.println ("Case #" + test + ": " + numPairs);
      }
   }
}
