Problem:
Score : 100 points

Problem Statement

Cat Snuke is learning to write characters.
Today, he practiced writing digits 1 and 9, but he did it the other way around.

You are given a three-digit integer n written by Snuke.
Print the integer obtained by replacing each digit 1 with 9 and each digit 9 with 1 in n.

Constraints

111 \leq n \leq 999

n is an integer consisting of digits 1 and 9.

Input

Input is given from Standard Input in the following format:

n

Output

Print the integer obtained by replacing each occurrence of 1 with 9 and each occurrence of 9 with 1 in n.

Sample Input 1

119

Sample Output 1

991

Replace the 9 in the ones place with 1, the 1 in the tens place with 9 and the 1 in the hundreds place with 9. The answer is 991.

Sample Input 2

999

Sample Output 2

111

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

import Control.Monad

main = do
    n <- read <$> getLine
    putStrLn $ solve n

solve :: Int -> String
solve n = convert (n `div` 100) : convert (n `div` 10) : convert n : []
  where
    convert n | n `mod` 10 == 1 = '9'
              | otherwise       = '1'