import java.io.BufferedReader;
import java.io.InputStreamReader;

public class Main {

	public static void main(String[] args){

		InputStreamReader isr = new InputStreamReader(System.in);
		BufferedReader br = new BufferedReader(isr);
		int no=0;
		try {
			String buf = br.readLine();
			no = Integer.parseInt(buf);

		} catch (Exception e) {
			// TODO: handle exception
			no = 0;

		}
		int Ans=(int)Math.pow(no, 3.0);

		System.out.println(Ans);


	}
}
/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