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

public class Solution {

    static String sumOfGroup(String k) {
        // Return the sum of the elements of the k'th group.
        BigInteger b1=new BigInteger(k);
        BigInteger b2;
        b2=b1.pow(3);
            String str=b2.toString();
        return str;
        
    }

    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        int k = in.nextInt();
        String s=Integer.toString(k);
        String answer = sumOfGroup(s);
        System.out.println(answer);
        in.close();
    }
}