#include <bits/stdc++.h>
#include "testlib.h"
using namespace std;
using ll = long long;

const ll N_min = 1;
const ll N_max = 100'000'000'000LL;

int main() {
	registerValidation();
	ll N = inf.readLong(N_min, N_max);
	inf.readEoln();
	inf.readEof();
}