Want to know about ZIO syllabus?

help
1

I want to know about the actual syllabus of ZIO on which questions are framed .
anyone who had given it before please give me tips how to prepare for the exam.

2

solve previous year question papers
link → Zonal Informatics Olympiad (ZIO) | CodeChef

3

do, I need anything more to crack this exam.

4
  1. Common sense.
  2. Practice.
  3. Middle school level math.