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

class Main {

	public static void main(String[] args) {
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		
		try {
			String input = br.readLine();
			int x;

			x = Integer.parseInt(input);
			
			if (!(x >= 1 && x <= 100)) {
				throw new IllegalArgumentException();
			}
			
			System.out.println((int)Math.pow(x, 3));
		
		} catch(NumberFormatException e) {
			e.printStackTrace();
		} catch(IllegalArgumentException e) {
			e.printStackTrace();
		} catch (IOException e) {
			e.printStackTrace();
		}
	}
}
/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