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