#include <bits/stdc++.h>
using namespace std;
inline int read() {
  int x = 0, f = 1;
  char ch = getchar();
  while (ch < '0' || ch > '9') {
    if (ch == '-') f = -1;
    ch = getchar();
  }
  while (ch >= '0' && ch <= '9') {
    x = x * 10 + ch - '0';
    ch = getchar();
  }
  return x * f;
}
int main() {
  int n = read();
  for (int i = 1; i <= n; i++) {
    int x = read();
    if (x % 2 == 0) x--;
    cout << x;
    if (i != n) cout << " ";
  }
}
