Academic Collaboration Network

In an academic institution, researchers collaborate on projects. Each researcher has a unique ID and may collaborate with multiple others. Your task is to determine how many distinct research groups exist after processing collaboration requests. Input Format: - The first line contains an integer n: the number of researchers (1 ≤ n ≤ 500). - The second line contains an integer m: the number of collaboration requests (1 ≤ m ≤ 1000). - The next m lines contain pairs of integers (a, b) showing that researchers a and b wish to collaborate. Output Format: - Print a single integer representing the number of distinct research groups after processing all requests. Example: Input: 4 3 1 2 2 3 1 4 Output: 2