Hi all, I live in India, and in my country there are two means to be selected for the national OI, namely :-
1) ZCO — Zonal Computing Olympiad — The coding round
2) ZIO — Zonal Informatics Olympiad — The written test...
ZIO is a pen and paper test, wherein students are required to solve questions using algorithmic techniques, although logic is enough to solve.(quoted from CodeChef)
Other problems Previous Years' Links at https://www.codechef.com/ioi/zio
The ZIO expects grade 11 and students like me, to score 100%(i.e. 80/80) in the test, and the ZIO is also a LOT harder than ZCO where you can even qualify with just brute forcing, But I like the ZIO, much more as preparing for it will make me a better problem solver, rather than a "brute-forcer".