ROUND-1
Question 1: https://leetcode.com/problems/maximum-number-of-events-that-can-be-attended/description/

ROUND-2
Question 1: https://leetcode.com/problems/capacity-to-ship-packages-within-d-days/description/
Question 2: https://leetcode.com/problems/best-time-to-buy-and-sell-stock-iv/description/