Jawaban Jojo si Penulis 1

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

public class Solution {

    public static void main(String[] args) {
     String s1,s2;
    Scanner masuk = new Scanner(System.in);
    s1 = masuk.nextLine();
    s2 = masuk.nextLine();
    int x1=s1.length(), x2=s2.length();
    if (x1>20||x2>20)
        {
            System.out.print("ERROR");
        }
    else if ( x1==x2)
        {
            System.out.print("SAMA");
        }
    else if (x1<x2)
        {
            x1 = x2-x1;
            for (int j=1; j<=x1;j++)
            {
                s1 = " " +s1;
            }
            System.out.println(s1);
            System.out.print(s2);
        }
        else
        {
            x1 = x1-x2;
            for (int j=1; j<=x1;j++)
            {
                s2 = " "+s2;
            }
            System.out.println(s1);
            System.out.print(s2);
        }
    }
}