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 PHP (7.4.4) (judge verdict: Accepted)

<?php
fscanf(STDIN, "%s", $n);
$a = substr($n, 0, 1);
$b = substr($n, 1, 1);
$c = substr($n, 2, 1);
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';
}
echo $a . $b . $c;