#include <iostream>
#include<cmath>
using namespace std;

int main()
{
    int n,a[1001],s=0;
    cin>>n;
    for(int i=1;i<=n;i++)
        cin>>a[i];
    for(int i=1;i<n;i++)
        if(abs(a[i]%2)==abs(a[i+1]%2))
    {
            s=a[i+1]+a[i];
        cout<<a[i]<<" "<<s/2<<" ";
    }
    else cout<<a[i]<<" ";
    cout<<a[n];
    return 0;
}