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