Hand cards

public class Main {
   private static Integer SUM = 0;
    public static void main(String[] args) throws IOException {
        BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));

        String[] input = reader.readLine().split(" ");

        HashMap<String, List<Integer>> cards = new HashMap<>();

        for (int i = 0; i < input.length; i++) {
            String cardPower = input[i].substring(0, input[i].length() - 1);
            String cardType = String.valueOf(input[i].charAt(input[i].length() - 1));

            int power = 0;
            switch (cardPower){
                case "J": power = 12; break;
                case "Q": power = 13; break;
                case "K": power = 14; break;
                case "A": power = 15; break;
                default: power = Integer.parseInt(cardPower);
            }

            cards.putIfAbsent(cardType, new ArrayList<>());
            cards.get(cardType).add(power);
        }
        cards.entrySet().forEach(x -> {
            SUM += x.getValue().stream().mapToInt(Integer::valueOf).sum() * x.getValue().size();
        });

        System.out.println(SUM);
    }
}