User \C2024liuhongyi_ use 2 minutes to AC A to D,I thought it was impossible,and I found him cheating.
In the latest contest (Codeforces Round 903 (Div. 3)), the codes of the problems DEF of \C2024liuhongyi_ are very similar to those of Complete_Reality.
C:
D:
As you can see,although \C2024liuhongyi_'s code just has 3 lines,their code are the same.So I think they are the same user and their submissions should be skipped.
Although \C2024liuhongyi_ is Unrated,it's not an excuse.In my opinion,he shouldn't use 2 IDs to join in the contest and cheat in it.
