#3DaysBetweenTwoDates

import java.util.Date;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Scanner;
import java.util.concurrent.TimeUnit;

public class DaysBetweenTwoDates {

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

        try {
            Scanner scan = new Scanner(System.in);
            String firstDateStr = scan.nextLine();
            String secondDateStr = scan.nextLine();
            SimpleDateFormat dateFormat = new SimpleDateFormat("dd-MM-yyyy");
            Date firstDate = dateFormat.parse(firstDateStr);
            Date secondDate = dateFormat.parse(secondDateStr);
            long diffInMilli = secondDate.getTime() - firstDate.getTime();
            long diffInDays = TimeUnit.MILLISECONDS.toDays(diffInMilli);
            System.out.println(Math.abs(diffInDays));
        }
        catch(ParseException e){
            e.printStackTrace();
        }
    }
}