#include <iostream> // input/output stream
#include <fstream> // file stream
using namespace std;
struct student{
string ime;
string prezime;
int brojnaindex;
double prosek;
};
int main()
{
    ifstream cin("in.txt"); // input file stream
    ofstream cout("out.txt"); // output file stream
    int n;
    cin >> n;
    cout << n << endl;

    return 0;
}