public HashSet<Integer> getUsed() {
        Config data = Server_Loader.data;
        String tries = data.getString(id + "#BadTries");
        String solved = data.getString(id + "#Solved");
        HashSet<Integer> used = new HashSet();
        if(tries != null && !tries.equals("")) {
            String[] args = tries.split("#");
            for(String s : args) {
                String args2[] = s.split("\\.");
                if(Integer.parseInt(args2[0]) == Server_Loader.round) used.add(Integer.parseInt(args2[1]));
            }
        }
        if(solved != null && !solved.equals("")) {
            String[] args = solved.split("#");
            for(String s : args) {
                String args2[] = s.split("\\.");
                if(Integer.parseInt(args2[0]) == Server_Loader.round) used.add(Integer.parseInt(args2[1]));
            }
        }
        return used;
    }