#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]<<" ";
	} 
	return 0;
}

/**************************************************************
	Problem: 1582
	User: admin
	Language: C++
	Result: Accepted
	Time:13 ms
	Memory:2072 kb
****************************************************************/