I've got a different solution to the one offered here already. If ab2+b+7∣a2b+a+b, then ab2+b+7∣b(a2b+a+b)−a(ab2+b+7)=b2−7a. ... <看更多>

The story about IMO 2021 was released on the regional channel "St. Petersburg TV Channel". The story tells in detail about how the Olympiad was held in St. ... <看更多>

IMO Grand Challenge for Artificial Intelligence. ... minutes (which is approximately the amount of time it takes a human judge to judge a human's solution). ... <看更多>