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 OCaml (4.02.3) (judge verdict: Accepted)

let () =
  Scanf.scanf "%1d%1d%1d\n"
    (fun a b c ->
       if a = 1 then if b = 1 then if c = 1 then 999 else 991
         else if c = 1 then 919 else 911
       else if b = 1 then if c = 1 then 199 else 191
       else if c = 1 then 119 else 111
    )
  |> print_int