Problem:
Score : 100 points

Problem Statement

It is September 9 in Japan now.

You are given a two-digit integer N. Answer the question: Is 9 contained in the decimal notation of N?

Constraints

10≤N≤99

Input

Input is given from Standard Input in the following format:

N

Output

If 9 is contained in the decimal notation of N, print Yes; if not, print No.

Sample Input 1

29

Sample Output 1

Yes

The one's digit of 29 is 9.

Sample Input 2

72

Sample Output 2

No

72 does not contain 9.

Sample Input 3

91

Sample Output 3

Yes

Solution in Haskell (GHC 7.10.3) (judge verdict: Accepted)

module Main (main) where

import qualified Data.ByteString.Char8     as C8
import           Data.Maybe

main :: IO ()
main = do
  [n] <- readInts
  print . showAnswer $ solve n

type Input  = (Int)
type Output = Bool

solve :: Input -> Output
solve = any (=='9') . show

showAnswer :: Output -> Answer
showAnswer = YesNo

-- utils
readInts :: IO [Int]
readInts = map (fst . fromJust . C8.readInt) . C8.words <$> C8.getLine

data Answer
  = YesNo Bool
  | AB Bool
  | Number Int

instance Show Answer where
  show (YesNo b)  = if b then "Yes" else "No"
  show (AB b)     = if b then "A"   else "B"
  show (Number i) = show i