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(';');
              }
          }


    }