Finding Gaps Between Intervals

In a project management tool, you need to identify gaps between scheduled intervals. Given a list of intervals for a project, find the gaps where no work is scheduled. The program reads from standard input, with the first line containing an integer n, the number of intervals. The next n lines contain two integers each, signifying the start and end times of each interval. The output should list the start and end of each gap, in ascending order. Input Format: - An integer n (1 ≤ n ≤ 10000) - n lines, each containing two integers (start, end) (0 ≤ start < end ≤ 10^9) Output Format: - Each gap as "start end" on a new line, if there are gaps. If there are no gaps, print "No Gaps". Example: Input: 4 1 3 5 7 8 10 12 15 Output: 3 5 10 12