import java.util.Scanner;
public class area
{
public static void main(String args[])
{
double r;
final double pi=3.1415;
Scanner scan=new Scanner(System.in);
System.out.println("Input radius:");
r=scan.nextDouble();
System.out.println(4/3*pi*r*r*r);
}
}
public class area
{
public static void main(String args[])
{
double r;
final double pi=3.1415;
Scanner scan=new Scanner(System.in);
System.out.println("Input radius:");
r=scan.nextDouble();
System.out.println(4/3*pi*r*r*r);
}
}