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++ (GCC 5.4.1) (judge verdict: Wrong Answer)

#include <bits/stdc++.h>
using namespace std;

int main(){
  string S;
  cin >> S;
  if (S[0] == '1'){
     S[0] = '9';
  }
  if (S[0] == '9'){
     S[0] = '1';
  }
  if (S[1] == '1'){
     S[1] = '9';
  }
  if (S[1] == '9'){
     S[1] = '1';
  }
  if (S[2] == '1'){
     S[2] = '9';
  }
  if (S[2] == '9'){
     S[2] = '1';
  }
  cout << S << endl;
}