def is_a_leap_year(year):

    if year % 100 != 0 and year % 4 == 0:

        return True

    if year % 100 == 0 and year % 400 ==0:

        return True

    return False

def which_day(date):

    time_str = date.split("-")

    leap_year = is_a_leap_year(int(time_str[0]))

    if leap_year:

        day_list = [0,31,29,31,30,31,30,31,31,30,31,30,31]

    else:

        day_list = [0,31,28,31,30,31,30,31,31,30,31,30,31]

    day = 0

    for i in range(0,int(time_str[1])):

        day+= day_list[i]

    print("這是{}年的第{}天".format(time_str[0], day + int(time_str[2])))

if __name__ == "__main__":

    which_day(input("請(qǐng)輸入年月日 格式為2002-1-1/n"))