from datetime import date, timedelta

d1 = date(2015, 1, 1)  # start date
d2 = date(2015, 12, 31)  # end date

delta = d2 - d1         # timedelta

ans=0
for i in range(delta.days + 1):
    D=str(d1 + timedelta(days=i))
    m=int(D[5:7])
    d=sum([int(x) for x in D[8:10] ])
    ans+=(m==d)
print(ans)