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

public class Solution {

    public static void main(String args[])
    {
        int number;
        Scanner value = new Scanner(System.in);
        number = value.nextInt();
        System.out.println(answer(number));
    }
    static int answer(int number)
    {
        int result;
        result = number * number * number;
        return result;
    }
}