Hi Codeforces community! :D

We're excited to invite you to TOKI Regular Open Contest (TROC) #4!

Key details:

• Rated
• Contest link: https://tlx.toki.id/contests/troc-4
• Time: 30 December 2018, 19:05 UTC+7
• Style: ICPC-style, 8-minute penalty per wrong submission
• Writers: athin, Klungs, jonathanwoenardi, sergiovieri
• Duration: 2 hours
• Problems: 6
• Allowed languages: C, C++11, Pascal, Java, Python 3

The first several rounds of TROCs will be used to generate the initial ratings for the contestants. Everyone can join (combined divisions), and the problemset is expected to be easier than usual.

Please register to the contest, and we hope you will enjoy TROC #4! :D

UPD: Contest is over! Top 5:

1. wiwitrifai
2. -Morass-
3. neko_nyaaaaaaaaaaaaaaaaa
4. wleung_bvg
5. faustaadp

Editorial will be available here (currently in Bahasa Indonesia only). Stay tuned, ;)

You can upsolve the problems at https://training.ia-toki.org/problemsets/151/problems.

Thanks for participating and see you on the next contest! :D