First Round was a Managerial Round with project level deep down and behavioral questions
Question:

1. Design Amazon Look Inside type ( Architecture was requested)
   Constraints:
   a. User see 5 pages max
   b. User should not see more than 20% of the book.
   c. All users combined should not see more than 80% of the book

   Follow up : How to scale for million concurrent users

Round 2:

1. Find maximum path sum in two sorted arrays . The path can be switched at common element between arrays.
2. Find Median of a BST.
   Follow up: Find Median without extra storage.