#include <bits/stdc++.h>
using namespace std;
int main(int argc, char** argv) {
  string s;
  cin >> s;
  string ans = "";
  int index = 0;
  if (s[0] == '9') {
    ans = "9";
    index = 1;
  }
  for (int i = index; i < s.size(); i++) {
    int t = s[i] - '0';
    if (t >= 5) t = 9 - t;
    char ch = t + '0';
    ans = ans + ch;
  }
  cout << ans << endl;
  return 0;
}
