Suspected cheater : hacker0022
Aside from his obvious username, he was a newbie who solved all problems. He submitted his solutions in the last hour of the contest ALL within 9 minutes. He either got the solutions from an AI, from someone else participating in the contest or he is just an alt account. Furthermore, in problem A he used cin and cout, whereas in the others he used scanf, printf and puts. He also submitted a couple of fake solutions in python just to have a couple of compilation errors to not seem suspicious.
A problem submission: 382642429
B problem submission: 382643115
Auto comment: topic has been updated by tish0 (previous revision, new revision, compare).
the transition from "cin" to "scanf" feels sus!