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 C# (Mono 4.6.2.0) (judge verdict: Accepted)

        using System;

        public class Program
        {
            public static void Main(string[] args)
            {
            string input = Console.ReadLine();
            string answer = "";

            foreach(char i in input)
            {
                switch (i)
                {
                    case '1':
                        answer += '9';
                        break;
                    case '9':
                        answer += '1';
                        break;
                    default:
                        answer += i;
                        break;
                }
            }

            Console.WriteLine(answer);
            }
        }