#include <fstream>

using namespace std;
ifstream f("36.txt");
ofstream g("36.out");
double v[1000];
int main()
{
   int n,i,j,s=0,k,t=1,q;
   f>>n;
   for(i=1;i<=n;i++)
   {f>>v[i];s+=v[i];}
   for(i=1;i<=n;i++)
   {
       if(i%2==0)
        {   q=s;
            for(j=n;j>=i;j--)
            {
                v[j+1]=v[j];
            }
            n++;
            k=n-2-t;t++;
            s=s-v[i-1]-v[i+1];
            v[i]=(double)s/(double)k;
            s=q;
        }
    }

   for(i=1;i<=n;i++)
   {
       g<<v[i]<<" ";
   }
    return 0;
}