#include <bits/stdc++.h>
using namespace std;
int a[100005];
int main() {
  int n;
  while (~scanf("%d", &n)) {
    for (int i = 0; i < n; i++) {
      scanf("%d", &a[i]);
    }
    sort(a, a + n);
    if (a[n - 1] == 1) {
      a[n - 1] = 2;
      for (int i = 0; i < n - 1; i++) {
        printf("%d ", a[i]);
      }
      printf("%d\n", a[n - 1]);
    } else {
      printf("1");
      for (int i = 0; i < n - 1; i++) {
        printf(" %d", a[i]);
      }
      printf("\n");
    }
  }
  return 0;
}
