import Control.Applicative

main :: IO ()
main = solve <$> f >>= putStrLn
  where
    f = map read <$> words <$> getLine

solve :: [Int] -> String
solve [h, m]
  | t < 450 = "Yes"
  | t < 510 = "Late"
  | otherwise = "No"
  where
    t = h * 60 + m