| # | User | Rating |
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| 1 | Radewoosh | 3759 |
| 2 | orzdevinwang | 3697 |
| 3 | jiangly | 3662 |
| 4 | Benq | 3644 |
| 5 | -0.5 | 3545 |
| 6 | ecnerwala | 3505 |
| 7 | tourist | 3486 |
| 8 | inaFSTream | 3478 |
| 9 | maroonrk | 3454 |
| 10 | Rebelz | 3415 |
| # | User | Contrib. |
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| 1 | adamant | 172 |
| 2 | awoo | 165 |
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| 4 | SecondThread | 164 |
| 5 | maroonrk | 162 |
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| 7 | Um_nik | 161 |
| 8 | -is-this-fft- | 149 |
| 9 | Geothermal | 146 |
| 10 | ko_osaga | 142 |
Author: nandonathaniel
Developer: nandonathaniel
Author: ArvinCiu
Developer: gansixeneh
Author: Pyqe
Developer: gansixeneh
Sugeng enjing, Codeforces! 🥰🥰🥰🥰
COMPFEST 15 is happy to invite you to participate in Codeforces Round 902 (Div. 1, based on COMPFEST 15 - Final Round) and Codeforces Round 902 (Div. 2, based on COMPFEST 15 - Final Round) on 08.10.2023 12:05 (Московское время). Both rounds will be rated. You will be given 2 hours and 30 minutes to solve 7 problems.
The problems are written by ArvinCiu, Pyqe, and nandonathaniel.
We would like to thank:
COMPFEST itself is an annual event hosted by Universitas Indonesia. It is the largest student-run IT event in Indonesia and competitive programming contest is one of the competitions hosted.
We hope you will enjoy and have fun in the contest. Muga-muga beja lan isa entuk biji apik!! 💪💪🔥🔥
UPD: Scoring distribution
UPD2: Contest is over!
Congratulations to our winners!
Congratulations for our first solvers:
We will try to post the editorials as soon as possible. Please stay tuned!
UPD3: Editorial
On behalf of the COMPFEST committees, we are glad that our Codeforces Round ran quite smoothly and we hope that you all enjoyed our problems. See you next year! 😍😍
Author: Pyqe
Developer: nandonathaniel
Author: KokiCoder
Developer: nandonathaniel
Author: Pyqe
Developer: gansixeneh
Author: CyberSleeper
Developer: CyberSleeper
Author: FreeJinG
Developer: Pyqe
Author: nandonathaniel
Developer: Pyqe
Author: ArvinCiu
Developer: ArvinCiu
Author: Edbert.H
Developer: Edbert.H
Author: CyberSleeper
Developer: CyberSleeper
Author: asteriskzie
Developer: Pyqe
Author: nandonathaniel
Developer: Pyqe
Author: gansixeneh
Developer: gansixeneh
Author: ArvinCiu
Developer: ArvinCiu
Hello, Codeforces! 😍😍
We are happy to invite you to participate in COMPFEST 15 Preliminary Online Mirror (Unrated, ICPC Rules, Teams Preferred) on . COMPFEST is a national ICPC-style contest for university students in Indonesia.
The problems are written and prepared by ArvinCiu, asteriskzie, CyberSleeper, Edbert.H, FreeJinG, gansixeneh, KokiCoder, nandonathaniel, and Pyqe.
We would also like to thank:
The contest will last for 5 hours and consist of 13 problems. The statements will only be available in English. While it is preferred to participate in a team, individual participation is also allowed.
COMPFEST itself is an annual event hosted by Universitas Indonesia. It is the largest student-run IT event in Indonesia and competitive programming contest is one of the competitions hosted.
We hope you will enjoy and have fun in the contest. Good luck! 🔥🔥🔥🔥
UPD: Contest is over!
Congratulations for our first solvers!
Editorial is available here!
Hello Codeforces community,
We are excited to invite you to TOKI Indonesian NOI Open Contest 2023 — an online mirror contest for the Indonesian National Olympiad in Informatics. This national olympiad is one of the stages required for our students to qualify to represent Indonesia in the International Olympiad in Informatics (IOI). You may have seen our past open olympiads (2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022), and you can check our past problems here.
The contest is similar to IOI: 2 competition days (+ 1 trial session), each consisting of 3 IOI-style (partial, subtasks) problems to be solved in 5 hours. The schedule is as follows:
Each contestant can select any 5-hour window within the time range to do the contest for each competition day. Each contestant may start the contest at any time within the time range by clicking the "start" button. There will be no additional time given if a contestant starts the contest less than 5 hours before the contest ends. The scoreboard will be hidden until the contest has ended.
We are aware that the contest days overlap with IOI 2023; unfortunately, we cannot change the dates.
All three contests are now available on TLX. Please register in those contests. You may need to register for a TLX account if you do not have one.
For more detailed information and rules, see our official website.
See you on the leaderboard!
UPD: The official contest has ended, thanks for your participation!
The result of the open contest can be found on our website.
You can upsolve the problems here. The official editorials will be released, stay tuned!
We thank everyone who is involved:
We hope we can conduct the open OI again, and see you next year!
Dear Codeforces community, 
We are excited to invite you to TLX Regular Open Contest #32!
Key details:
Many thanks to:
Please register to the contest and we hope you will enjoy TROC #32! 🔥🔥🔥🔥
UPD: The round has been delayed by 15 minutes due to technical difficulties. We are sorry for the inconvenience.
Congratulations to the top 5:
Congratulations to our first solvers:
You can upsolve the problem here. Editorial is available in the upsolve link!
Thank you for participating and see you on the next contest!
Author: Pyqe
Developer: errorgorn, Pyqe
Author: Nyse
Developer: steven.novaryo
Author: Pyqe
Developer: errorgorn
Author: steven.novaryo
Developer: steven.novaryo, Pyqe
Author: NeoZap
Developer: errorgorn, Pyqe
Tutorial of Codeforces Round 831 (Div. 1 + Div. 2)
Dear Codeforces community,
We are excited to invite you to TOKI Regular Open Contest #27 (based on COMPFEST 14)! For those of you who don't know, COMPFEST is a national contest for university students in Indonesia.
Key details:
Many thanks to:
COMPFEST itself is an annual event hosted by Universitas Indonesia. It is the largest student-run IT event in Indonesia and competitive programming contest is one of the competitions hosted.
Please register and we hope you will enjoy the contest!
UPD: contest is over!
Congratulations to our top 5:
Congratulations to our first solvers:
You can upsolve the problems here.
Thank you for participating!
UPD 2: editorial is available in the upsolve link.
Author: Pyqe
Developer: nandonathaniel
Editorialist: Pyqe
Author: FerdiHS
Developer: muhammadhasan01
Editorialist: Pyqe
Author: Pyqe
Developer: steven.novaryo
Editorialist: steven.novaryo
Author: Pyqe
Developer: TakeMe, Pyqe
Editorialist: Pyqe
Author: steven.novaryo
Developer: steven.novaryo
Editorialist: rama_pang
Author: Pyqe
Developer: Pyqe
Editorialist: Pyqe
Author: Nyse
Developer: Nyse
Editorialist: Pyqe
Author: Pyqe
Developer: steven.novaryo
Editorialist: steven.novaryo
Author: Pyqe
Developer: Pyqe
Editorialist: Pyqe
Author: gansixeneh
Developer: gansixeneh, steven.novaryo
Editorialist: rama_pang
Author: Pyqe
Developer: Pyqe
Editorialist: rama_pang
Author: Pyqe
Developer: steven.novaryo
Editorialist: rama_pang
Author: Pyqe
Developer: Pyqe
Editorialist: rama_pang
Dear Codeforces community,
We are excited to invite you to TOKI Regular Open Contest #21! 👊😎
Key details:
Scoring distribution: 100 — 200 — 300 — 500 — 500 — 600 — 800
Many thanks to:
Please register and we hope you will enjoy the contest! 🔥🔥🔥🔥
UPD: Please note there is a change in the contest timing.
UPD2: Contest is over!
Congratulations to our top 5:
Congratulations to our first solvers:
You can upsolve the problems here.
Editorial is available in the upsolve link.
Thank you for participating and see you on the next contest! 😭👍
The problems in this contest follows a theme. Can you guess the theme?
