import datetime

start_date = datetime.date(2015, 1, 1)
end_date = datetime.date(2015, 12, 31)

happy_day_count = 0

current_date = start_date
while current_date <= end_date:
    month = current_date.month
    day = current_date.day
    tens = day // 10
    ones = day % 10

    if month == tens + ones:
        happy_day_count += 1

    current_date += datetime.timedelta(days=1)

print(happy_day_count)