Magic Number Finder

You are given a sorted list of unique integers. Your task is to find a 'magic number', defined as a number that equals its index in the array. Implement a function to search for the first magic number in the list, or return -1 if there is none. Input Format: - The first line contains an integer N, the number of integers. - The second line contains N space-separated integers representing the sorted unique integers. Output Format: - Print the magic number if one exists, otherwise print -1. Example: Input: 5 -10 -5 0 3 4 Output: 3