Здравейте, когато дам кода в Judge ми дава 70/100. Грешките са Runtime.

import java.util.*;

public class Main {

    public static void main(String[] args) {

        Scanner s = new Scanner(System.in);

        String[] gifts = s.nextLine().split("\\s+");

        String command = s.nextLine();

        while (!command.equals("No Money")) {

            String[] tokens = command.split("\\s+");

            switch (tokens[0]) {

                case "OutOfStock":
                    for (int i = 0; i < gifts.length; i++) {
                        if (gifts[i].equals(tokens[1])) {
                            gifts[i] = "None";
                        }
                    }
                    break;

                case "Required":
                    int index = Integer.parseInt(tokens[2]);
                    if (index < gifts.length) {
                        gifts[index] = tokens[1];
                    }
                    break;

                case "JustInCase":
                    gifts[gifts.length-1] = tokens[1];
                    break;

            }

            command = s.nextLine();
        }

        for (String gift : gifts) {
            if (!gift.equals("None")) {
                System.out.print(gift + " ");
            }
        }
    }

}