import java.io.*;

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

	int x=0;
	int syo=0;

	InputStreamReader i = new InputStreamReader(System.in);
	BufferedReader br = new BufferedReader(i);

	String buf = br.readLine();
	x = Integer.parseInt(buf);
	syo = (int)Math.pow(x,3);

	System.out.println(syo);
    }
}
/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