import java.util.*;
 class VolumeOfSphere {

    public double sphereVolume(double r)
    {
        double sph=4/3;
        double volumeOfSphere = sph * Math.PI * Math.pow(r,3);
        return volumeOfSphere;
    }
    public static void main (String[] args)
    {
        VolumeOfSphere sphere = new VolumeOfSphere ();
        Scanner input=new Scanner(System.in);
        System.out.print("Enter radius: ");
        double r=input.nextDouble();
        double volume=sphere.sphereVolume(r);
        System.out.println("Volume of Sphere: "+volume);
    }
 }