Shoot for the win

import java.text.DecimalFormat;
import java.util.*;
import java.util.function.Function;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import java.util.stream.Collectors;
import java.util.stream.IntStream;
import java.util.stream.Stream;

public class Test {

    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);

        List<Integer> numbers = Arrays.stream(scanner.nextLine().split("\\s+"))
                .map(e -> Integer.parseInt(e)).collect(Collectors.toList());

        String input = scanner.nextLine();
        int count = 0;
        int oldValue = 0;

        while (!input.equals("End")) {
            int newIndex = Integer.parseInt(input);
            if (newIndex < 0 || newIndex > numbers.size()) {
                input = scanner.nextLine();
                continue;
            }
            oldValue = numbers.get(newIndex);
            numbers.set(newIndex, -1);
            count++;

            for (int i = 0; i <= numbers.size() - 1; i++) {
                if (numbers.get(i) == -1) {
                    continue;
                }
                if (numbers.get(i) <= oldValue) {
                    numbers.set(i, numbers.get(i) + oldValue);
                } else {
                    numbers.set(i, numbers.get(i) - oldValue);
                }
            }
            input = scanner.nextLine();
        }
        System.out.printf("Shot targets: %d -> ", count);
        System.out.println(numbers);


    }
}