import datetime

oneday = datetime.timedelta(days=1)
baseDate = datetime.date(2015, 1, 1)
endDate = datetime.date(2015, 12, 31)


cnt = 0


def check_happy(m: int, d: int, d2: int):
    global cnt
    if m == d + d2:
        cnt += 1


while not baseDate == endDate:
    m = baseDate.month
    d = baseDate.day
    one: int = 0
    two: int = 0

    if d > 10:
        strDay = str(d)
        one = int(strDay[0])
        two = int(strDay[1])
    else:
        one = 0
        two = d

    check_happy(m, one, two)

    baseDate += oneday

print(cnt)