from datetime import date, timedelta

now = date(2015,1,1)
end = date(2015,12,31)
day_inc = timedelta(days=1)
result = 0

def split_num(n):
    if n < 10:
        return 0, n
    else:
        string = str(n)
        return int(string[0]), int(string[1])

while now <= end:
    m = now.month
    now_day = now.day
    d1, d2 = split_num(now_day)
    if m == d1 + d2:
        result += 1
    now += day_inc
    
print(result)