#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)
      cout << a[i] - 1 << " ";
    else if (a[i] % 2 != 0)
      cout << a[i] << " ";
  }
}
