Kilonova
Solve Romanian olympiad problems and enter community and virtual contests
Kilonova is a Romanian online judge for informatics olympiad problems. You solve tasks from national olympiads, simulation rounds and community-written sets, and you take part in live contests or rerun past ones as virtual contests. The archive includes IIOT simulations and the Romanian national olympiad (ONI).
Free · No login · Browser
About Kilonova
It trains olympiad-style algorithms in C++ and other languages, and it suits secondary school students and anyone preparing for informatics olympiads.
It runs in the browser, in English or Romanian, and many problem titles are in Romanian. It is free and open source. You need an account to submit, and it supports C, C++, Go, Java, Kotlin, Node.js, Pascal, PHP, Python and Rust.
On Breakpoint since 25 Oct 2026.
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