class Ideone {
	public static void main (String[] args) {
		String a="000";
        String b="|&";
        String result = (a + b).replaceAll("(?<=.)(?=.{" + (a.length() - 1) + "}(.))|.(?=.{0," + (b.length() - 1) + "}$)", "$1");
        System.out.println(result);
	}
}