Hello Codeforces community,

We are excited to invite you to TOKI Indonesian NOI Open Contest 2022 — an online mirror contest for the Indonesia 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) 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:

• Day 0: 3 October 2022 03:30 — 4 October 2022 01:30 UTC (trial session)
• Day 1: 4 October 2022 06:30 — 5 October 2022 01:30 UTC
• Day 2: 5 October 2022 06:30 — 6 October 2022 01:30 UTC

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 any time within the time range, by clicking the "start" button. There will be no additional time given if a contestant starts the contest in less than 5 hours before the contest ends. The scoreboard will be hidden until the contest has ended.

All three contests are now available on TLX. Please register in those contests. Please register in those contests.

For more detailed information and rules, see our official website.

See you on the leaderboard!