#include <iostream> using namespace std; int a[105]; int main() { int n; cin >> n; for (int i = 1; i <= n; i++) { cin >> a[i]; } int *p = a; for (int i = 1; i <= n; i++) { p++; if (*p % 2 == 0) { cout << *p - 1 << " "; } else { cout << *p + 1 << " "; } } return 0; }