import java.io.*;

class Main{
  public static void main(String[] args)throws java.io.IOException{
	
	BufferedReader input = new BufferedReader(new InputStreamReader(System.in));

	String hoge = input.readLine();
	int i = Integer.parseInt(hoge);

	System.out.println(i*i*i);
  }
}
/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