Find Continuous Availability

You are given a list of booked time slots for a resource (like a conference room). Your task is to find contiguous available time slots of a specified duration. The time slots are given in 24-hour format with minutes, and time runs from '00:00' to '23:59'. Input Format: - The first line contains two integers, n (the number of booked intervals) and d (the desired duration in minutes). - The next n lines each contain two strings in 'HH:MM' format representing the start and end time of each booking. Output Format: - Print the available time slots in 'HH:MM HH:MM' format, with each slot on a new line. If no slot is available, print "No available slots". Example: Input: 2 30 09:00 09:30 10:00 11:00 Output: 09:30 10:00