Star Enigma [Mimi]

import java.util.*;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class _12_StarEnigma {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        int n = Integer.parseInt(scanner.nextLine());
        String reg =
                "@(?<name>[A-Za-z]+)(?>[^@:!\\->]*):(?<population>\\d+)(?>[^@:!\\->]*)!(?<attack>[AD])!(?>[^@:!\\->]*)->(?<soldiers>\\d+)";

        Pattern p = Pattern.compile(reg);

        List<String> infoA = new ArrayList<>();
        List<String> infoD = new ArrayList<>();

        String line = "";
        for (int i = 0; i < n; i++) {   //for each line
            line = scanner.nextLine();
            int key = 0;
            StringBuilder updatedLine = new StringBuilder();
            for (int j = 0; j < line.length(); j++) { //along the line length counting
                if (line.charAt(j) == 's' || line.charAt(j) == 't'
                        || line.charAt(j) == 'a' || line.charAt(j) == 'r'
                        || line.charAt(j) == 'S' || line.charAt(j) == 'T'
                        || line.charAt(j) == 'A' || line.charAt(j) == 'R') {
                    key++;
                }
            }

            //Update characters:
            for (int k = 0; k < line.length(); k++) {
                char charche = (char) ((int) line.charAt(k) - (key));
                updatedLine.append(charche);
            }


            Matcher m = p.matcher(updatedLine);

            if (m.find()) {
                String name = m.group("name");
                String attack = m.group("attack");

                if (attack.equals("A")) {
                    infoA.add(name);

                } else {
                    infoD.add(name);
                }
            }
        }


        System.out.println("Attacked planets: " + infoA.size());
        Collections.sort(infoA);
        for (String s : infoA) {
            System.out.println("-> " + s);
        }

        System.out.println("Destroyed planets: " + infoD.size());
        Collections.sort(infoD);
        for (String s : infoD) {
            System.out.println("-> " + s);
        }

    }
}