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.io.BufferedReader;
import java.io.FileInputStream;
import java.io.FileWriter;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.Set;


public class RecycledNumbersSmall {

	/**
	 * @param args
	 */
	public static void main(String[] args) throws Exception {
		int noTestcases;
		
		FileInputStream fis = new FileInputStream("D:/Eclipse Workspaces/ws_hyperbola/Recycled Numbers/src/example.txt");
		BufferedReader br = new BufferedReader(new InputStreamReader(fis));
		String sLine = br.readLine();
		noTestcases = Integer.parseInt(sLine);
		
		StringBuffer sb = new StringBuffer();
		List<String> outputList = new ArrayList<String>();
		
		for(int i = 1; i <= noTestcases && (sLine = br.readLine()) != null; i++) {
			String[] numLimits = sLine.split(" ");
			int lowerLimit = Integer.parseInt(numLimits[0]);
			int upperLimit = Integer.parseInt(numLimits[1]);
			int noRecycledPairs = getRecycledpairsCount(lowerLimit, upperLimit);
			System.out.println("Case #" + i + ": " + noRecycledPairs);
			outputList.add("Case #" + i + ": " + noRecycledPairs);
		}
		
		
		writeOutput(outputList);
		
		br.close();
		fis.close();
		
	}
	
	private static void writeOutput(List<String> lines) throws Exception {
		FileWriter fw = new FileWriter("D:/Eclipse Workspaces/ws_hyperbola/Recycled Numbers/src/output.txt");
		PrintWriter pw = new PrintWriter(fw);
		for(String line : lines) {
			pw.println(line);
		}
		pw.flush();
		pw.close();
	}

	private static int getRecycledpairsCount(int smallerNumber, int biggerNumber) {
		int result = 0;
		
		if(biggerNumber < 10) return 0;	// 1 digit numbers
		
		
		if(isBetween(smallerNumber, 10, 99) && isBetween(biggerNumber, 10, 99)) {	// 2 digit numbers
			Set<RecycledPair> setPair = new HashSet<RecycledPair>();
			for(int num = smallerNumber; num <= biggerNumber; num++) {
				int recycledNum = shiftDigit(num, 1);
				if(recycledNum != num && isBetween(recycledNum, smallerNumber, biggerNumber)) {
					setPair.add(new RecycledPair(num, recycledNum));
				}
			}
			//System.out.println(setPair.toString());
			result = result + setPair.size();
		}
		
		else if(isBetween(smallerNumber, 100, 999) && isBetween(biggerNumber, 100, 999)) {	// 3 digit numbers
			Set<RecycledPair> setPair = new HashSet<RecycledPair>();
			
			/* one digit shift */
			for(int num = smallerNumber; num <= biggerNumber; num++) {
				int recycledNum = shiftDigit(num, 1);
				if(recycledNum != num && isBetween(recycledNum, smallerNumber, biggerNumber)) {
					setPair.add(new RecycledPair(num, recycledNum));
				}
			}
			
			/* two digit shift */
			for(int num = smallerNumber; num <= biggerNumber; num++) {
				int recycledNum = shiftDigit(num, 2);
				if(recycledNum != num && isBetween(recycledNum, smallerNumber, biggerNumber)) {
					setPair.add(new RecycledPair(num, recycledNum));
				}
			}
			
			//System.out.println(setPair.toString());
			result = result + setPair.size();
		}
		
		else if(isBetween(smallerNumber, 1000, 9999) && isBetween(biggerNumber, 1000, 9999)) {	// 3 digit numbers
			Set<RecycledPair> setPair = new HashSet<RecycledPair>();
			
			/* 1 digit shift */
			for(int num = smallerNumber; num <= biggerNumber; num++) {
				int recycledNum = shiftDigit(num, 1);
				if(recycledNum != num && isBetween(recycledNum, smallerNumber, biggerNumber)) {
					setPair.add(new RecycledPair(num, recycledNum));
				}
			}
			
			/* 2 digit shift */
			for(int num = smallerNumber; num <= biggerNumber; num++) {
				int recycledNum = shiftDigit(num, 2);
				if(recycledNum != num && isBetween(recycledNum, smallerNumber, biggerNumber)) {
					setPair.add(new RecycledPair(num, recycledNum));
				}
			}
			
			
			/* 3 digit shift */
			for(int num = smallerNumber; num <= biggerNumber; num++) {
				int recycledNum = shiftDigit(num, 3);
				if(recycledNum != num && isBetween(recycledNum, smallerNumber, biggerNumber)) {
					setPair.add(new RecycledPair(num, recycledNum));
				}
			}
			
			//System.out.println(setPair.toString());
			result = result + setPair.size();
		}
		
		return result;
	}
	
	private static boolean isBetween(int number, int lowerLimit, int upperLimit) {
		return number >= lowerLimit && number <= upperLimit;
	}
	
	private static int shiftDigit(int number, int digitsNo) {
		String sNum = String.valueOf(number);
		int index = sNum.length() - digitsNo;
		String sNewNumber = sNum.substring(index) + sNum.substring(0, index);
		return Integer.parseInt(sNewNumber);
	}
	

}
