Problem:
Score : 100 points

Problem Statement

How many hours do we have until New Year at M o'clock (24-hour notation) on 30th, December?

Constraints

1≤M≤23

M is an integer.

Input

Input is given from Standard Input in the following format:

M

Output

If we have x hours until New Year at M o'clock on 30th, December, print x.

Sample Input 1

21

Sample Output 1

27

We have 27 hours until New Year at 21 o'clock on 30th, December.

Sample Input 2

12

Sample Output 2

36

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


import Control.Applicative
import Data.List
import Data.Char

getInt :: IO Int
getInt = (\a -> read a :: Int) <$> getLine

getIntArray :: IO [Int]
getIntArray = ((map (\a -> read a :: Int)) . words) <$> getLine

getStrArray :: Int -> IO [String]
getStrArray 0 = return [] :: IO [String]
getStrArray n = (:) <$> getLine <*> (getStrArray (n - 1))

isGood :: String -> String
isGood [a, b, c, d] 
    | a == b && b == c = "Yes"
    | b == c && c == d = "Yes"
    | otherwise = "No"

main = do
    print =<< (\a -> 24 + (24 - a)) <$> getInt