Find Missing Work Hour

You are given a list of recorded work hours of an employee for the week. The hours are sorted in ascending order but one entry is missing due to a clerical error. Your task is to identify the missing hour that should fit in the sorted list. If the list is complete, return -1. Input Format: - The first line contains a single integer N, the number of recorded hours. - The second line contains N space-separated integers representing the sorted working hours. Output Format: - Print the missing hour if found, otherwise -1. Example: Input: 5 1 2 3 4 6 Output: 5