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 JavaScript (node.js v5.12) (judge verdict: Accepted)

function main(input) {
  const n = parseInt(input, 10);
  var hako=[];
  var a = Math.floor(n/100);
  var b = Math.floor((n-a*100)/10);
  var c =n-a*100-b*10;
  hako.push(a);
  hako.push(b);
  hako.push(c);
  for(var i=0; i<3; i++){
    if(hako[i]==1){
      hako[i]=9
    }else if(hako[i]==9){
      hako[i]=1
    }
  }
  console.log(100*hako[0]+10*hako[1]+hako[2]);
}
main(require('fs').readFileSync('/dev/stdin', 'utf8'));