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 );
    }
}

package problemC;

import java.io.BufferedReader;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.util.HashSet;
import java.util.StringTokenizer;

public class RecycledNumbers {
	public static void main(String[] args) throws IOException {
		BufferedReader in = new BufferedReader(new FileReader("C-small-attempt0.in"));
		FileWriter fw = new FileWriter("C-small-attempt0.out");
		/*BufferedReader in = new BufferedReader(new FileReader("C-large-practice.in"));
		FileWriter fw = new FileWriter("C-large-practice.out");*/
		int T = new Integer(in.readLine());
		for (int cases = 1; cases <= T; cases++){
			StringTokenizer st=new StringTokenizer(in.readLine());
			int A = new Integer(st.nextToken());
			int B = new Integer(st.nextToken());
			int num_bits = 0;
			long result = 0;
			int tempn = B;
			HashSet<Integer> hs = new HashSet<Integer>();
			while (tempn > 0){
				num_bits++;
				tempn = tempn/10;
			}
			
			if (num_bits == 1) {
				result = 0;
			}else {
				for (int target = A; target <= B; target++){
					
					if(!hs.contains(target)){
					int temp = target;
					int p = 1;
					int bit = 0;
					for (int t = 1 ; t < num_bits; t++){
						bit = temp % 10;
						temp = temp/10;
						if (bit != 0){
							temp = temp + (int) (bit * Math.pow(10, num_bits-1));
							if ((temp >= A) && (temp <= B) && (temp!=target)&&(!hs.contains(temp))){
								hs.add(target);
								hs.add(temp);
								p++;
							}
						}
					}
					
					result = result + (p*(p-1))/2;
					}
				}
			}
			
			if (cases != T) {fw.write("Case #" + cases + ": "+ result + "\n");
			}
			else {fw.write("Case #" + cases + ": "+ result);}
		}
		fw.flush();
		fw.close();
	}
}
