Unlike other competitions, the Mathematical Olympiad's final exam consists of two parts, each lasting four and a half hours, completed over two days.
Although it seems like there's plenty of time, this year's final exam only had a total of six problems, with a full score of 126 points.
In other competitions, one's knowledge base and experimental experience are tested to some extent, providing the opportunity to prepare years in advance and compensate for the lack of talent with an exponential amount of effort.
But this approach is definitely not feasible in the Mathematical Olympiad.
The Mathematical Olympiad never deals with complex tools; the knowledge everyone relies on is equally limited and equally classic.
If it's the preliminary, middle, or semifinal rounds, perhaps squeezing out some points by furiously practicing Olympiad problems is possible.
But the final round's problems are never going to overlap with past questions.