#include <iostream>

using namespace std;

int a[1000], n, i, j, num;

int main()

{

    cin >> n; j=-1;

    for (i=0; i<n; ++i)

    {

        cin >> num;

        ++j; a[j]=num;

        if (num%2==0)

        {

            ++j; a[j]=2*num;

        }

    }

    for (i=0; i<=j; ++i)

        cout << a[i] << " ";

}