Exam Score Locator

You are given a sorted list of students' exam scores. Your task is to locate the index of a specific score using binary search. If the score does not exist in the list, return -1. Input format: - The first line contains an integer n (1 ≤ n ≤ 1000) indicating the number of scores. - The second line contains n space-separated integers representing the exam scores. - The third line contains an integer representing the score you need to search for. Output format: - Print a single integer: the index of the score, or -1 if not found. Example: Input: 4 60 70 80 90 70 Output: 1