from calendar import monthrange

def hd(year):
    ans = 0
    month = [monthrange(year, i)[1] for i in xrange(1, 13)]

    for idx, m in enumerate(month):
        for d in xrange(1, m + 1):
            if d > 9:
                if idx + 1 == int(str(d)[0] + str(d)[1]):
                    ans += 1
            else:
                if idx + 1 == d:
                    ans += 1
    return ans

print hd(2015)