#include <iostream> #include <cstring> using namespace std; int a[105]; int main() { int n; cin >> n; int *p1 = a; for (int i = 1; i <= n; i++) { p1++; cin >> *p1; } int *p2 = a; int cnt = 0; for (int i = 1; i <= n; i++) { p2++; if (*p2 % 2 == 0) { cout << *p2 - 1 << " "; } else { cout << *p2 + 1 << " "; } } return 0; }