Isolated Hubs

You have a network of computers represented by unique integer IDs. Some computers are directly connected, while others are isolated. Your task is to identify how many isolated clusters of computers exist based on the connections given. A cluster is a set of computers that are all reachable from one another. Input Format: - The first line contains an integer n (1 ≤ n ≤ 1000), the number of computers. - The second line contains an integer m (0 ≤ m ≤ 10000), the number of direct connections between computers. - The next m lines contain two integers a and b (1 ≤ a, b ≤ n), indicating a direct connection between computer a and computer b. Output Format: - Print the number of isolated clusters of computers. Example: Input: 4 2 1 2 3 4 Output: 2 Input: 3 0 Output: 3