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.LinkedList;
import java.util.List;


public class Secundaria 
{
	public Secundaria()
	{
		
	}
	
	public int nVeces(int primero, int ultimo)
	{
		int i = 0;
		
		if(primero <= 9 && ultimo <=9)
			return 0;
		
		LinkedList<Integer> lista;
		for(int j = primero; j <= ultimo; j++)
		{
			lista = deparse(j);
			for(int k = j+1; k <= ultimo; k++)
			{
				for(int r = 0; r < lista.size(); r++)
				{
					int prueba = monta(lista);
					if(k == prueba)
						i++;
					int x = lista.pop();
					lista.addLast(x);
				}
			}
		}
				
		return i;
	}
	
	public int monta(LinkedList<Integer> l)
	{
		int res = 0;
		int a = 1;
		for(int i = 0; i < l.size(); i++)
		{
			for(int k = i;k < l.size(); k++)
				a *= 10;
			
			res += l.get(i) * a;
			a = 1;
		}
		res = res / 10;
		return res;
	}
	
	public LinkedList<Integer> deparse(int k)
	{
		LinkedList<Integer> ret = new LinkedList<Integer>();
		
		int r = k;
		while(r != 0)
		{
			ret.addFirst(r % 10);			
			r = r / 10;
		}
				
		return ret;
	}
}
