#include <iostream>

using namespace std;

int n,i,v[101];

int main()
{
    cin>>n;
    for(int i=1;i<=n;i++)
        cin>>v[i];
    for(int i=1;i<n;i++)
    {
        cout<<v[i]<<" ";
        if((v[i]%2==0 && v[i+1]%2==0) || (v[i]%2!=0 && v[i+1]%2!=0))
            cout<<(v[i]+v[i+1])/2<<" ";
    }
    cout<<v[n];
}