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