Pakkaus

import java.util.Scanner;
public class merkkijono {
  
  public static void main (String [] args){
       Scanner sc = new Scanner(System.in);
    
    String merkkijono = ""; 
    String tulos = "";
    merkkijono = sc.nextLine();    
    int taulu[] = new int[1000];
    int taulu2[] = new int[1000];
    int x = 0;
    int y = 0; 
  
    for (int a = 0; a < merkkijono.length() -1 ; a++){
      if ( (int) merkkijono.charAt(a) > 47 && (int) merkkijono.charAt(a) < 58){
     
        if ( (int) merkkijono.charAt(a+1) > 47 && (int) merkkijono.charAt(a+1) < 58){
          if ( (int) merkkijono.charAt(a+2) > 47 && (int) merkkijono.charAt(a+2) < 58){
             if ( (int) merkkijono.charAt(a+3) > 47 && (int) merkkijono.charAt(a+3) < 58){
            taulu[x] = Integer.valueOf(merkkijono.substring(a,a+4));
          taulu2[x] = a+3;
          x++;
          a += 3;
             }
            else{
          taulu[x] = Integer.valueOf(merkkijono.substring(a,a+3));
          taulu2[x] = a+3;
          x++;
          a += 2;
            }
          }
          else {
          taulu[x] = Integer.valueOf(merkkijono.substring(a,a+2));
          taulu2[x] = a+2;
          x++;
          a += 1;
          }
        }
        else {
          taulu[x] = Integer.valueOf(merkkijono.substring(a,a+1));
          taulu2[x] = a+1;
          x++;
          
        } 
      }
      }
    taulu2[x] = merkkijono.length() ;
    for (int a = 0; a <= x; a++){
    
      for (int a2 = 0; a2 < taulu[a]; a2++){
        tulos += merkkijono.substring(taulu2[a],taulu2[a+1]);
      }
    }
    
   tulos = tulos.replaceAll("\\d","");
  System.out.println(tulos);
}
}

Test 1

Group: 1

Verdict: ACCEPTED

Test 2

Group: 1

Verdict: ACCEPTED

Test 3

Group: 1

Verdict: ACCEPTED

Test 4

Group: 1

Verdict: ACCEPTED

Test 5

Group: 1

Verdict: ACCEPTED

Test 6

Group: 2

Verdict: ACCEPTED

Test 7

Group: 2

Verdict: RUNTIME ERROR

Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: 1000
	at merkkijono.m...

Test 8

Group: 2

Verdict: ACCEPTED

Test 9

Group: 2

Verdict: ACCEPTED

Test 10

Group: 2

Verdict: ACCEPTED

Test 11

Group: 3

Verdict: ACCEPTED

Test 12

Group: 3

Verdict: RUNTIME ERROR

Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: 1000
	at merkkijono.m...

Test 13

Group: 3

Verdict: WRONG ANSWER

Test 14

Group: 3

Verdict: TIME LIMIT EXCEEDED

Test 15

Group: 3

Verdict: TIME LIMIT EXCEEDED