#include<bits/stdc++.h>
using namespace std;
int main()
{
    int a[1010],n,i;
    cin>>n;
    for(i = 0;i < n;i++){
        cin>>a[i];
    } 
        
    for(i = 0;i < n / 2;i++){
        a[i] = a[i] * 2;
    }
        
    for(i = n / 2;i < n;i++){
        a[i] = a[i] + 1;
    }
        
    for(i = 0;i < n;i++){
        cout<<a[i]<<" ";
    } 
}
/**************************************************************
	Problem: 1582
	User: linzihang
	Language: C++
	Result: Accepted
	Time:10 ms
	Memory:2072 kb
****************************************************************/