import java.util.Scanner; public class Main { public static void main(String[] args) { Scanner in = new Scanner(System.in); while (in.hasNext()) { double a = in.nextDouble(); double b = a/2; for(;;){ if(a==Double.parseDouble(String.format("%.3f",Math.pow(b,3)))) break; if((a>0&&Math.pow(b,3)>a...