Input: MaxWorkLoad: example 10
       Timeslot and workload: example [(2, 6, 3), (3, 8, 2), ... ]
       The (2, 6, 3) is begin time, end time, and workload
       You can treat the 2, 6 as the UNIX epoch time.
       The input can be in any time order. For example: [(20, 60, 3), (3, 8, 2)]

Output: a boolean returning whether the series of workload can fit in without
        exceeding MaxWorkLoad