Japan · JOI
Japan · JOI
From national selection to IOI
JOI 2026/27: first qualifier → second qualifier → Semifinal → representative selection during the Final → IOI. The outline changed the number and frequency of first-qualifier tasks; the IOI representative selection at the Final is C++ only.
Route at a glance
- Organizer
- JCIOI
- Season / version
- 2026/27 outline
- Checked
- 2026-10-14
- Stages
- First qualifier → Second qualifier → Semifinal → Final selection → IOI Team → IOI
Stages and transitions
- First qualifier
- Second qualifier
Official advancement · From First qualifier：Passing the first qualifier leads to the second; the 2026/27 outline changed the first qualifier's task count and frequency
- Semifinal
Official advancement · From Second qualifier：Passing the second qualifier leads to the Semifinal
- Final selection · C++ only
Selection / invitation · From Semifinal：Enter the IOI representative selection held during the Final
- IOI Team · National team
Selection / invitation · From Final selection：The representative selection is C++ only; the Final has different school-stage restrictions from earlier rounds
- IOI · International contest
Representing the country · From IOI Team：The national organization sends a delegation to IOI; domestic selection is arranged by each organization
Unverified or country-specific entries are not drawn as required stages; the sources are summaries of the ordinary main path.
What this route verifies
- JOI 2026/27: first qualifier → second qualifier → Semifinal → representative selection during the Final → IOI.
- The outline changed the number and frequency of first-qualifier tasks; the IOI representative selection at the Final is C++ only.
Eligibility and language limits
- The Final has different school-stage restrictions from earlier rounds.
- AtCoder results, training bonuses and special entries are not expanded in this simplified diagram.
Still to verify
- Later contest details
- Outdated year left in section 8
- Item-by-item modeling of exemptions and special entries
- Original-task reuse limits
Frequently asked questions
Where does the JOI pathway end?
The final node is IOI: the national organization sends a delegation, and domestic selection is arranged by each organization.
Does this route establish participation or national-team eligibility?
No. The page only organizes the verified main path; participation, official ranking, training camp and national team eligibility are verified separately and follow the official notice for the current year.
What is still unverified?
Later contest details; Outdated year left in section 8; Item-by-item modeling of exemptions and special entries; Original-task reuse limits.
Sources
Links point to organizers or official sources; InfoCode does not replace official eligibility decisions.