#include <bits/stdc++.h>
using namespace std;
int main(int argc, char const *argv[]) {
  string input;
  cin >> input;
  int i = 0;
  if (input[0] == '9') ++i;
  for (; i < input.length(); ++i) {
    if (input[i] >= '5') {
      input[i] = '0' + '9' - input[i];
    }
  }
  for (int j = 0; j < input.length(); ++j) {
    cout << input[j];
  }
  cout << endl;
  return 0;
}
