O2. Shoot For The Win / O3. Mid Exam Retake

package MidExam.O3;

import java.util.Arrays;
import java.util.List;
import java.util.Scanner;
import java.util.stream.Collectors;

public class O2ShootForTheWin {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        List<Integer> test = Arrays.stream(scanner.nextLine().split("\\s+")).
                map(Integer::parseInt).collect(Collectors.toList());
        String command = scanner.nextLine();
        int targets = 0;
        while (!command.equals("End")) {
            int index = Integer.parseInt(command);
            if (index < test.size()) {
                int magic = test.get(index);
                for (int i = 0; i < test.size(); i++) {
                    test.set(index, -1);
                    if (test.get(i) >= 0 && test.get(i) <= magic) {
                        test.set(i, test.get(i) + magic);

                    } else if (test.get(i) >= 0 && test.get(i) > magic) {
                        test.set(i, test.get(i) - magic);
                    }
                }
                targets++;
            }
            command = scanner.nextLine();
        }
        System.out.printf("Shot targets: %d -> ",targets);
        for (Integer number : test) {
            System.out.print(number + " ");
        }
    }
}