import java.io.*;
public class Main {
	public static void main(String[] args) throws IOException {
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		String in = br.readLine();
		br.close();
		int x = Integer.parseInt(in);
		int y = cube(x);
		System.out.println(y);
	}
	/**
	 * x を3乗する
	 * 
	 * @param x
	 * @return
	 */
	public static int cube(int x) { 
		return x*x*x;
	}
}
/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