public static void main(String[] args) throws IOException {
        BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
        String s;
        while((s = in.readLine()) != null){
            StringBuilder newString = new StringBuilder(s);
            if(s.length() >= 4){
                for(int i=0; i<s.length() - 4; i++){
                    newString.setCharAt(i, '#');
                }
            }
            System.out.println(newString);
        }
    }