Jawaban Rias si Fisikawati 2

import java.io.*;
import java.util.*;

public class Solution {

    public static void main(String[] args) {
    String s1,s2,s3,s4; int x = 0;
    Scanner masuk = new Scanner(System.in);
    s1 = masuk.nextLine();
    s2 = masuk.nextLine();
        s3 = masuk.nextLine();
        s4 = masuk.nextLine();
        if(s1.equalsIgnoreCase("hilang"))
        {
            x++; s1 = "0";
        }
        if(s2.equalsIgnoreCase("hilang"))
        {
            x++; s2 = "0";
        }
        if(s3.equalsIgnoreCase("hilang"))
        {
            x++; s3 = "0";
        }
        if(s4.equalsIgnoreCase("hilang"))
        {
            x++; s4 = "0";
        }
        double ep = Double.valueOf(s1);
        double m = Double.valueOf(s2);
        double g = Double.valueOf(s3);
        double h = Double.valueOf(s4);
        if(x>=2)
        {
            System.out.print("GAK ADA");
        }
        else if(x==1)
        { //EP=M.G.H
            if(ep==0)
            {
                ep = m*g*h;
                ep = Math.round(ep);
                System.out.printf("%.2f J",ep);
            }
            else if(m==0)
            {
                m = ep/(g*h);
                m = Math.round(m);
                System.out.printf("%.2f Kg",m);
            }
            else if(g==0)
            {
                g = ep / (m*h);
                g = Math.round(g);
                System.out.printf("%.2f m/s^2",g);
            }
            else if(h==0)
            {
                h = ep / (m*g);
                h = Math.round(h);
                System.out.printf("%.2f m",h);
            }
        }
        else if(x==0)
        {
            if(ep==(m*g*h))
            {
                System.out.print("WOW");
            }
            else
            {
                System.out.print("APA SIH");
            }
        }

    }
}