About - ReimuOJ: Reimu Online Judge

Reimu Online Judge

Reimu Online Judge is built with the purpose of providing a completely free Competitive Programming roadmap. The roadmap is compiled for those aiming at competitions such as Vietnamese Olympiad in Informatics (VOI) or ICPC, or simply for anyone who wants to enhance their programming problem-solving skills. Don't worry if you're a competitive programming enthusiast living outside of Vietnam, this roadmap is still applicable to you as well!

"95% of gamblers quit before they win big."

Kanye West

In reality, many people tend to learn an excessive amount of difficult knowledge that is not frequently seen in contests. That's why ReimuOJ encourages you to focus on fundamental knowledge within the roadmap first. With a solid understanding and mastery of these foundational concepts, you will undoubtedly achieve excellent results.

The roadmap is designed based on the current meta of VOI and ICPC competitions in Vietnam, but it is possible that it may change in the future.

Reimu Online Judge is brought to you by:

  • Tuan Hoang Le, the founder of Reimu Online Judge.
  • Duc Anh Nguyen.
  • Huy Chau Le.
  • Nguyet Minh Phung, the designer of the adorable logo. ヾ(≧ ▽ ≦)ゝ.
  • Reimu Hakurei, the beloved mascot, and the newly-appointed CEO of ReimuOJ, cute niko miko.