import datetime as dt

count = 0
date = dt.datetime(2015,1,1,0,0)
for i in range(365):
    a = sum(map(int,list(str(date.month))))
    b = sum(map(int,list(str(date.day))))
    if a==b:
    	count+=1
    date+=dt.timedelta(days=1)
print(count)