import java.io.*;
import java.util.*;
import java.text.*;
import java.math.*;
import java.util.regex.*;

public class Solution {

    static long sumOfGroup(int k) {
        // Return the sum of the elements of the k'th group.
        long ans=k;
        ans*=k;
        ans=ans%(long)(Math.pow(10,9)+7);
        ans*=k;
        ans=ans%(long)(Math.pow(10,9)+7);
        return ans;
    }

    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        int k = in.nextInt();
        BigInteger ans=BigInteger.valueOf(k);
        BigInteger res=BigInteger.valueOf(1);
        res=res.multiply(ans);
        res=res.multiply(ans);
        res=res.multiply(ans);
        //long answer = sumOfGroup(k);
        System.out.println(res);
        in.close();
    }
}