#include <iostream>
#include <fstream>
using namespace std;
ifstream f("atestat.in");
float x,sum;
int nr;
struct nod{
 float info;
 nod *urm;
}*p,*varf;
void creare()
{
 while(f>>x)
 {
    sum+=x;
    nr++;
    p=new nod;
    p->info=x;
    if(varf==NULL)
            {p->urm=NULL; varf=p;}
            else
            {
             p->urm=varf;
             varf=p;
            }
 }
}
void tipar()
{
 p=varf;
 while(p!=NULL)
 {
    cout<<p->info<<" ";
    p=p->urm;
 }
}
int main()
{
    varf=NULL;
    creare();
    tipar();
    p=new nod;
    p->urm=varf;
    p->info=sum/nr;
    varf=p;
    cout<<"\n";
    tipar();
    return 0;
}