import java.util.Scanner;

public class SphereVolumeCalculator $\{$

public static void main$($String$[]$ args$)\{$

Scanner scnr $=$ new Scanner$($System$.$in$)$;

double sphereVolume;

double sphereRadius;

sphereRadius $=$ scnr$.$nextDouble$()$;

sphereVolume $=(4\mathrm{.}0/3\mathrm{.}0)$PI r$*$r$*$r;