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;
using System.Linq;

public class Hello
{
    public static void Main()
    {
        // Your code here!
        int n = int.Parse(Console.ReadLine());
        int a = n / 100;
        int b = (n % 100) / 10;
        int c = (n % 100) % 10;
        
        if(a == 1)
        {
            a = 9;
        }
        else if(a == 9)
        {
            a = 1; 
        }
        
        if(b == 1)
        {
            b = 9;
        }
        else if(b == 9)
        {
            b = 1; 
        }
        
        if(c == 1)
        {
            c = 9;
        }
        else if(c == 9)
        {
            c = 1; 
        }
        
        Console.WriteLine(a * 100 + b * 10 + c);
    }
}