honestlt this doesent even look like an olympiad question, not sure in japan but in my country in olympiads, logs start to come at around 8-9 grade stuff, but when they come they are always put at a much higher standard than normal school, if id say this is probably some highschool stuff

I don't think you have the mental capacity to learn. It seems that your cognitive and thinking capacity is of an inanimate rock

Lol