#include <iostream>
#include <fstream>

using namespace std;

ifstream f("date.in");

struct nod
{
    int info;
    nod *urm;
};

nod *start = NULL;

void adaugare(int x)
{
    nod *p;
    p->info = x;

    if(start == NULL)
    {
        start = p;
        p->urm = NULL;
    }
    else
    {
        p->urm = start;
        start = p;
    }
}

void afisare()
{
    nod *p = start;
    while(p->urm != NULL)
    {
        cout << p->info;
        p = p->urm;
    }
}

int main()
{
    int x;
    while(f >> x)
    {
        adaugare(x);
    }

    afisare();

    return 0;
}