Topics
Olympiad problems have four usual topics. A problem can have more than one topic, and many problems have no topic yet.
The topics of the shortlist problems come from the letter of their position: A3 of the IMO Shortlist is algebra.
Olympiad problems have four usual topics. A problem can have more than one topic, and many problems have no topic yet.
The topics of the shortlist problems come from the letter of their position: A3 of the IMO Shortlist is algebra.