import Data.Time

first2015 = fromGregorian 2015 1 1
first2016 = fromGregorian 2016 1 1

isHappyDay :: Day -> Bool
isHappyDay day = m == div d 10 + mod d 10 where
  (_,m,d) = toGregorian day

main = putStrLn . show $ length $ filter isHappyDay $ map (flip addDays first2015) $ [0..(diffDays first2016 first2015 - 1)]