import java.util.Scanner;
public class volumeOfSphere
{
    public static void main(String args[])
    {
        Scanner sc=new Scanner(System.in);
        System.out.println("Enter radius of Sphere");
        double r=sc.nextDouble();
        double pi=(double)(22/7);
        /*volume of Sphere= 4/3*pi*radius of sphere^2  */
        double volume=4/3*pi*(r*r);
        System.out.println("Volume of the Sphere="+volume);
    }
}