#include<bits/stdc++.h> using namespace std; int main(){ int n,a[100],*p; cin>>n; for(int i=0;i<n;i++){ cin>>a[i]; if(a[i]%2==0){ p=&a[i]; cout<<*p-1<<" "; }else{ p=&a[i]; cout<<*p+1<<" "; } } return 0; }