Hello Codeforces. This year I participated in IOI, and I did really bad. I want to improve throughout the year and try to manage my time with studying for school since this is graduation year. I want to find optimal way to practice, since I'm feeling that Codeforces problems are not really IOI-like. I was thinking of solving OI problems, but I don't really know how to sort them so that I can find problems for my level, since oj sorting style isn't really useful. Also I'm not even sure if simply solving problems throughout the year is useful alone too. Enough of my chaotic thoughts, I want to ask people who did well in IOI, at least silver, how do you practice? What sites do you usually solve on? How do you decide where to solve problem? You get the idea. I tried searching for blogs about these stuff but I only found the one by E869120 but it only talks about his strategy and speedsolving practice, which is useful, but definitely not everthing. I appreciate any replies.