**Round 1:**\n* 2-3 BQ on leadership principles\n* Write a method to find most frequently occuring movie in the list of movies\n\n**Round 2:**\n* 2-3 BQ\n* https://leetcode.com/problems/serialize-and-deserialize-binary-tree\n\n**Round 3:**\n* 3-4 BQ\n* Design a warehouse. Implement `placePackage()`  and `retrievePackage()` methods.\n\n**Round 4:**\n* 3-4 BQ\n* Given a list of server logs in `DD,Page Number,CustomerID` format, write a method to determine the number of unique customers who accessed a given page on a given day. What changes will you make if you have to call this method a million times?

Round 1:\n 2-3 BQ on leadership principles\n Write a method to find most frequently occuring movie in the list of movies\n\nRound 2:\n 2-3 BQ\n https://leetcode