Dear Aspirant, the topics of zonal computing Olympiad are not just constraint to the programming. The include the basic topics Such as-

Introduction.

Efficiency.

Searching.

Sorting.

Basic Graph Algorithms.

Dynamic Programming.

Greedy Algorithms.

Computing Shortest Paths.

Heaps, permutations, directed acyclic graphs, sliding window algorithms.

Also advanced topics like dynamic programming on trees, range queries, network flows, games and strategies, geometry etc are frequently asked.

Hope this was helpful.