HCI NOI Training 2021 Adv Practice 4 (Tree Tricks) (0/500)

Contest Description
Set merging on tree UFDS on tree Not on Codebreaker: chainblock https://www.facebook.com/codingcompetitions/hacker-cup/2021/round-2/problems/B worst_reporter4 https://oj.uz/problem/view/JOI21_worst_reporter4?locale=en
Scoreboard
Problem ID Your Score Title Source Problem Type
candyshop
N/A
candyshop Classic Problem Batch
race
N/A
Race IOI 2011 Interactive
collaboration
N/A
Collaboration December Course 2019 Advanced Final Contest (0rang3) Interactive
riggedroads
N/A
riggedroads NOI 2019 (pwypeanut) Batch
streets
N/A
One-Way Streets CEOI 2017 Batch