I got two question in online assessment.

1. Discount coupons:
   https://leetcode.com/discuss/interview-question/1501685/AMAZON-or-OA-or-Find-Valid-Discount-Coupons
2. Packets & channel:
   https://leetcode.com/discuss/interview-question/1501675/Amazon-or-OA-or-Maximum-Quality-sent-via-Channel

I couldn't solve it within the stipulated time and pass the test cases.
If someone know how to solve, please do. Will benefit others.