NYRCS Set 11 (PURQ segment tree) (0/400)

Contest Description
Enjoy your new datastructure :) Only 4 qns, i expect you to finish first 3. Finish 4 for sigma energy. Hints, do use if you’re stuck: https://gist.github.com/lomnom/157c4d837ec15c1cdd2f5896c2e4ad56 Please refrain from joining this contest if you are not from NYRCS (NYJC). You may view the problems through the public scoreboard instead.
Scoreboard
Problem ID Your Score Title Source Problem Type
segmenttree
N/A
Segment Tree Classic problem Batch
mountains
N/A
Mountains NOI 2020 Prelims (feeder) Batch
collectmushrooms2
N/A
collectmushrooms2 Dunjudge Archive Batch
crypto
N/A
crypto NOI 2020 Qualification (Damian) Batch