HDU 2002 计算球体积

import java.util.Arrays;
import java.util.Scanner;

public class Main{
    public final static double pi = 3.1415927;
    public static void main(String[] args) {
        
        Scanner sin=new Scanner(System.in);
        while(sin.hasNextDouble()){
            double r = sin.nextDouble();
            double result = 4/3.0 * pi * Math.pow(r,3);
            String res = String.format("%.3f", result);
            System.out.println(res);
        }
    }
}