#include <iostream>
#include <vector>
#include <stdio.h>
#include <tuple>
#include <algorithm>
#include <queue>
#include <cmath>
#include <cstdio>
#include <string>
//#include <stack>
//#include <set>
#include <map>
//#include <complex>
#define INF 1e9 + 2
#define MOD 1e9 + 7

using namespace std;
typedef long long ll;

int main()
{
    //freopen("input.txt", "r", stdin);
 	//freopen("output.txt", "w", stdout);
	//ios::sync_with_stdio(0);
	//cin.tie(0); cout.tie(0);
	ll k;
	cin >> k;
	cout << k * k * k;
}