public static void main(String[] args) {
          String regex="\\b([a-zA-Z-0-9_\\.?])+@([a-zA-Z-0-9_\\\\.]+)+\\b";
          StringBuilder domains=new StringBuilder();
          Scanner scanner=new Scanner(System.in);
          Integer lines =Integer.parseInt(scanner.nextLine());
          for (int i = 0; i < lines; i++) {
              String str =scanner.nextLine();
              Matcher match= Pattern.compile(regex).matcher(str);
              if (match.find()) {
                  for (int j = match.start(); j < match.end(); j++)
                      domains.append(str.charAt(j));
                  domains.append(';');
              }
          }
        System.out.println(domains.toString());
    }