date school

class Date():
    def __init__(self, dmy='01.01.1900'):
        day, month, year = map(int, dmy.split('.'))
        y = range(1583, 3001)
        self.year = year if year in y else 1900
        m = range(1, 13)
        self.month = month if month in m else 1
        d = range(1, 32)
        self.day = day if day in d else 1
        self.check_valid_date()

    def check_valid_date(self):
        if self.month == 2 and self.day > 29:
            if leap(self.year):
                self.day = 29
            else:
                self.day = 28


def str_date(date):
    '''
    Возвращает дату в виде строки в формате dd.mm.yyyy
    args - date (date)  (class Date)
    return - (str)
    '''
    day = str(date.day)
    month = str(date.month)
    year = str(date.year)
    if len(day) == 1: day = '0' + day
    if len(month) == 1: month = '0' + month
    return day + '.' + month + '.' + year


def leap(year):
    '''
    Проверка на високосный гол
    args - year (int)
    return - True/False
    '''
    leap = ((year % 400 == 0) or (year % 100 != 0)) and (year % 4 == 0)
    return leap


def day_m(year, month):
    '''
    Кол-во дней в месяце
    args - year, month (int)
    return - count_days (int)
    '''
    if month in (4, 6, 9, 11): days = 30
    elif month in (1, 3, 5, 7, 8, 10, 12): days = 31
    else:
        days = 28
        if leap(year):
            days += 1
    return days


def day_y(year):
    '''
    args - year (int)
    return - days (int)
    '''
    if leap(year): return 366
    else: return 365


def tomorrow(date):
    '''
    Дата на следующий
    args - date (Date)
    return tmrw_date (Date)
    '''
    tmrw_date = date
    if date.day != day_m(date.year, date.month):
        tmrw_date.day += 1
    elif date.month != 12:
        tmrw_date.month += 1
        tmrw_date.day = 1
    else:
        tmrw_date.year += 1
        tmrw_date.month = 1
        tmrw_date.day = 1
    return tmrw_date


def yesterday(date):
    '''
    Находит дату вчерашнего дня
    args - date (Date)
    return - ystr_date (Date)
    '''
    ystr_date = date
    if date.day != 1:
        ystr_date.day -= 1
    elif date.day == 1:
        if date.month != 1:
            ystr_date.month = date.month - 1
            ystr_date.day = day_m(ystr_date.year, ystr_date.month)
        else:
            ystr_date.year = date.year - 1
            ystr_date.month = 12
            ystr_date.day = day_m(ystr_date.year, ystr_date.month)
    return ystr_date


def future(days, date):
    '''
    Прибавляет к начальной дате кол-во дней (days),
    возвращает новую дату
    args - days (int), date (Date)
    return - date (Date)
    '''
    for i in range(1, date.month):
        days += day_m(date.year, i)
    days += date.day
    while days > day_y(date.year):
        days -= day_y(date.year)
        date.year += 1
    date.month = 1
    while days > day_m(date.year, date.month):
        days -= day_m(date.year, date.month)
        date.month += 1
    date.day = days
    return date


def past(days, date):
    '''
    Находить дату которая была days дней назад
    args - days (int), date (Date)
    return - date (Date)
    '''
    while days >= day_y(date.year):
        days -= day_y(date.year)
        date.year -= 1
    while days >= day_m(date.year, date.month):
        days -= day_m(date.year, date.month)
        date.month -= 1
    while days > date.day:
        date.month -= 1
        days -= date.day
        date.day = day_m(date.year, date.month)
    date.day -= days
    return date


def latest_date(date1, date2):
    '''
    Находит позднюю дату из двух
    args - date1 (Date), date2 (Date)
    return - latest_date (Date) or 0 (int)
    '''
    if date1.year > date2.year:
        latest_date = date1
    elif date1.year < date2.year:
        latest_date = date2
    else:
        if date1.month > date2.month:
            latest_date = date1
        elif date1.month < date2.month:
            latest_date = date2
        else:
            if date1.day > date2.day:
                latest_date = date1
            elif date1.day > date2.day:
                latest_date = date2
            else:
                latest_date = 0
    return latest_date


def days_d1_d2(date1, date2):
    '''
    Находит промежуток между двумя
    args - date1 (Date), date2(Date)
    return - days (int)
    '''
    days = 0
    latest = latest_date(date1, date2)
    if latest == 0:
        return 0
    else:
        if date1 == latest:
            early = Date(str_date(date2))
        else:
            early = Date(str_date(date1))

        days += latest.day
        while latest.month > 1:
            latest.month -= 1
            days += day_m(latest.year, latest.month)
        while latest.year > early.year:
            latest.year -= 1
            days += day_y(latest.year)

        days -= early.day
        while early.month > 1:
            early.month -= 1
            days -= day_m(early.year, early.month)
    return days


def input_date():
    y, m, d = input().split()
    s = d + '.' + m + '.' + y
    return Date(s)


def main():
    date = input_date()
    print(str_date(date))
    date2 = input_date()
    print(str_date(date2))
    print(days_d1_d2(date, date2))

main()