#include <iostream>
#include<fstream>

using namespace std;
struct NOD
{
    int inf;
    NOD *urm,*ant;
};
void creare(int x)
{
    prim=new NOD;
    prim->urm=prim->ant=NULL;
    ultim=prim;
}
void adaugare(int x)
{
    NOD *nou;
    nou=new NOD;
    nou->inf=x;
    nou->urm=NULL;
    ultim->urm=nou;
    nou->ant=ultim;
    ultim=nou;
}
void adaugaref(int x)
{
    NOD *nou;
    nou=new NOD;
    nou->inf=x;
    nou->ant=NULL;
    nou->urm=prim;
    prim->ant=nou;
    prim=nou;
}
void afisare2()
{
    NOD *p;
    p=ultim;
    while(p!=NULL)
    {
        cout<<p->inf<<" ";
        p=p->ant;
    }
}

int main()
{
   ifstream in("lista.in");
   int x;
   in>>x;
   creare(x);

    return 0;
}