package CSP.temp.A1;

import java.util.Scanner;
/**
 * @Projectname: LeetCode
 * @Filename: CSP.temp.A1.CSP.temp.A2.CSP.temp.A3.CSP.temp.A4.CSP.temp.A5.Main
 * @Author: 杨逸
 * @Data:2023/9/2 13:27
 * @Description: U189818 时间间隔
 */
public class Main {
    private final static Scanner input = new Scanner(System.in);
    private static int h1;
    private static int m1;
    private static int s1;
    private static int h2;
    private static int m2;
    private static int s2;
    public static void main(String[] args) {
        h1 = input.nextInt();
        m1 = input.nextInt();
        s1 = input.nextInt();
        h2 = input.nextInt();
        m2 = input.nextInt();
        s2 = input.nextInt();

        int result = 0;
        //秒差
        if (s2 >= s1){
            result +=s2-s1;
        }else{
            //借位
            result += s2-s1+60;
            if (m2>0){
                m2--;
            }else{
                h2--;
                m2 += 60;
                m2 --;
            }
        }
        //分钟差
        if (m2 >=m1){
            result += (m2-m1)*60;
        }else{
            //借位
            result += (m2-m1+60)*60;
            h2--;
        }
        //小时差
        result += (h2-h1)*3600;
        System.out.println(result);

    }
}