import java.util.Scanner;

public class Main{
	public static void main(String args[]){

		//Sccaner???????????????????????????????????????
		//System.in??§??\????????±?????????
		Scanner sc = new Scanner(System.in);
		int intA = sc.nextInt();

		//??????????¨?????????????????????????
		double dbAncer = Math.pow(intA, 3);
		int intAncer = (int)dbAncer;
		System.out.println(intAncer);
	}
}
/tmp/hf-datasets-cache/medium/datasets/42704881117311-config-parquet-and-info-qiankunmu-Project_CodeNet-896c9d36/hub/datasets--qiankunmu--Project_CodeNet_Python800_and_Java250/snapshots/c899fde44a77ba1cc14973ed3de064e4ff3aadc7/Project_CodeNet_Java250.tar.gz