Hey there.
I was doing an A2OJ ladder, and I came across this problem (185C - Clever Fat Rat), that nobody had managed to pass system tests during the contests for some odd reason. When I went to check the editorial, there was no explanation, only a smiley face, so I decided to check the submission list, but I was not able to understand the code.
It would help me very much if someone could help me understand how to solve the problem. Thanks in advance.
The fact that no one passed system tests and that there's no tutorial is so funny
Also red-ranker including tourist are hacked QaQ.
From the announcement blog : "UPD: I'm very bad man, and have written wrong solution in problem "C". Problem under investigation."