Coming soon

Due to COVID-19, IOI 2021 will be hosted by Singapore online. Visit the official website to learn more.

Coming soon   IOI will take place online

APIO - Call for tasks

As discussed in the APIO delegation meeting in IOI 2019, Indonesia intends to host Asia-Pacific Informatics Olympiad (APIO) 2021 too, as a further warm-up towards IOI 2022. Therefore, we are collecting task ideas from the community.

Each submitted task contains at least the following:

  • author(s) information: name, e-mail, affiliation, country, and author's role in APIO or national olympiad;
  • task statement (PDF is preferred);
  • description of the desired solution.

Your email is also recommended to contain:

  • solution implementations in C++ (Java will not be supported in APIO 2021);
  • suggestions for grading;
  • test data;
  • alternate solutions or expected near-solutions;
  • background information on the task;
  • any other comments relevant to the task.

If there are multiple files for one problem (e.g. diagrams, solution code), you are expected to send them as one zip or tar archive. Task submission is sent to with [Task Submission] - <task title> as the subject. You are expected to send one email for each submitted task. Task submission will be accepted until March 14, 2021. More detail is available on the APIO 2021 Call for Tasks page.

Authors of submitted tasks will be recognized on the APIO 2021 website by listing their name, affiliation, and country (unless they specifically decline this). Any questions about the call for tasks may be directed to

Thank you.
Prabowo Djonatan
Scientific Committee, APIO 2021

Need more info?


Not sure where to go? Click here to view some basic information on how to learn programming and prepare to win a medal at the IOI.


A couple of volunteers maintain a separate page with stats about people who participated at the International Olympiad in Informatics.


The IOI publishes a journal every year, with original high-quality scientific papers related to education, contests and algorithms.