#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];
    if (a[i] % 2 == 0) a[i] = a[i] - 1;
  }
  for (int i = 0; i < n; i++) cout << a[i] << " ";
}
