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