#include <bits/stdc++.h>
using namespace std;
int main() {
  ios_base::sync_with_stdio(0);
  cin.tie(0);
  cout.tie(0);
  int n;
  cin >> n;
  vector<long long> v(n);
  for (int i = 0; i < n; ++i) cin >> v[i];
  for (int i = 0; i < n; ++i) {
    if (!(v[i] % 2)) v[i]--;
  }
  for (int i = 0; i < n; ++i) cout << v[i] << ' ';
  return 0;
}
