Welcome to Biweekly Contest 28! Feel free to share and post your contest experience here!

You can also view the rankings for the contest here.

Links to the individual problems are included below:

Final Prices With a Special Discount in a Shop (3 points)

Subrectangle Queries (4 points)

Find Two Non-overlapping Sub-arrays Each With Target Sum (5 points)

Allocate Mailboxes (7 points)