package com.thinker.bishi.saima;

import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Scanner;

/**
 * @author lzh
 *         <p href="http://exercise.acmcoder.com/online/online_judge_ques?ques_id=1649&konwledgeId=134">
 *         http://exercise.acmcoder.com/online/online_judge_ques?ques_id=1649&konwledgeId=134
 *         </p>
 */
public class DiffDate {


    public static void main(String[] args) throws Exception {

        Scanner sc = new Scanner(System.in);
        SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd");//设置日期格式
        Date date = df.parse(sc.nextLine());
        Date now = df.parse("2015-10-18");
        long l = date.getTime() - now.getTime();
        long day = l / (24 * 60 * 60 * 1000);
        System.out.println(day);
    }


}