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