In this blog, zh0ukangyang was banned because of the policy of using a single account. Few days passed, PinkieRabbit reached legendary grandmaster by Codeforces Round 941 (Div. 1). However, he was found as a cheater in this blog. He broke the rule of codeforces contest. We could clearly know that 'The contestants are forbidden to talk about subjects, related to the problems, with anybody, including other contestants' in Mike's blog. FIVE days passed, there is nothing happened to PinkRabbit. Is it too hard for Mike to solve this problem? I don't think so. The evidence is certain. So I can say there is no justice in codeforces?