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 Scala (2.11.7) (judge verdict: Runtime Error)

import scala.io.StdIn

object Main {
    def main(args: Array[String]): Unit = {
        val N = StdIn.readLine().split("").map { str: String => str.toInt }

        println(if (List.fill(3)(N(0)).mkString("").toInt < N.mkString("").toInt) {
            List.fill(3)(N(0)).mkString("")
                    .toInt.toString
                    .split("")
                    .map { str: String => str.toInt + 1 }
                    .mkString("")
                    .toInt
                    .toString
        } else {
            List.fill(3)(N(0)).toString()
        })
    }
}