#include <bits/stdc++.h>
using namespace std;
int main() {
  ios::sync_with_stdio(0);
  cin.tie(0);
  int n;
  cin >> n;
  int a[n];
  for (int i = 0; i < n; i++) cin >> a[i];
  sort(a, a + n);
  if (a[n - 1] == 1) {
    for (int i = 0; i < n - 1; i++) cout << a[i] << " ";
    cout << 2;
  } else {
    cout << 1 << " ";
    for (int i = 0; i < n - 1; i++) cout << a[i] << " ";
  }
  return 0;
}
