I do USACO now, and I am preparing to take it December 2025. This is a collection of all the problems I've done to improve my competitive programming skills. I do a class on USACO and some of these are the homework. There are 8 or 9 homework questions a week. These homework qusetions are very hard for me. Dad helps me with the problems a bit(definitely not an understatement), and he always finds time for it somehow. I do USACO to prepare for Singapore's NoI, and possibly the IoI, so it's good it's a challenge.