Network Prefix Shadowing

In network routing, a 'User' IP prefix is 'shadowed' if there exists an 'Admin' IP prefix that is either exactly the same or a shorter prefix of the User string. Given a list of Admin prefixes and a list of User prefixes (represented as binary strings), count how many User prefixes are shadowed by at least one Admin prefix. Input Format: 1. An integer N (number of Admin prefixes). 2. N lines of binary strings (Admin). 3. An integer M (number of User prefixes). 4. M lines of binary strings (User). Output Format: An integer representing the count of shadowed User prefixes. Example: Input: 1 101 2 1010 111 Output: 1 Explanation: '1010' is shadowed by '101' because '101' is a prefix of '1010'. '111' is not shadowed.