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 );
    }
}

/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package codejam.y12.round0;

import utils.Jam;
import utils.JamCase;

/**
 *
 * @author fabien
 */
public class RecycledNumbers extends Jam {

  public RecycledNumbers(String filename) {
    super(filename);
  }

  @Override
  public JamCase getJamCase(int number) {
    return new Line(this, number, lines[number]);
  }

  private class Line extends JamCase {

    private int a;
    private int b;
    private String line;
    private int count;

    public Line(Jam parent, int number, String line) {
      super(parent, number);
      this.line = line;
    }

    @Override
    public void parse() {
      String[] integers = line.split(" ");
      a = Integer.parseInt(integers[0]);
      b = Integer.parseInt(integers[1]);
    }

    @Override
    public void solve() {
      count = 0;
      for (int i = a; i <= b; i++) {
        countRecycles(i);
      }
      result = Integer.toString(count);
    }

    private void countRecycles(int number) {
      int len = 0;
      int n = number;
      while (n != 0) {
        n /= 10;
        len++;
      }
      n = number;
      int exp = (int) Math.pow(10, len - 1);
      for (int i = 0; i < len; i++) {
        n = nextRecycled(n, exp);
        if (n == number) {
          return;
        }
        if (n <= b && n > number) {
          count++;
        }
      }
    }

    private int nextRecycled(int i, int exp) {
      int r = i % 10;
      i = (i - r) / 10;
      i += r * exp;
      return i;
    }
  }
}
