Do you know kutengine? He has made some remarkable result here(i.e. 2nd place in Round 257 — http://codeforces.com/contest/449/standings) However, I found some strange things about his logs — in #257, his submission logs are as follows :
- 00:23:55 C Wrong answer on pretest 5 [pretests]
- 00:26:05 B Wrong answer on pretest 4 [pretests]
- 00:27:49 A Accepted [final tests]
- 00:43:07 B Accepted [final tests]
- 01:07:17 C Wrong answer on pretest 6 [pretests]
- 01:15:19 C Accepted [final tests]
- 01:16:36 D Memory limit exceeded on pretest 1 [pretests]
- 01:18:47 D Accepted [final tests]
- 01:45:52 E Accepted [final tests]
When you get WA in contests, sometimes you give up a problem temporarily, and move on to another problem. But if he did not solve A and B simultaneously, he solved problem A in less than 2 minutes! This problem A isn't that simple(it took fastest participant 5 minutes). Also, he made his first submission to problem D, just 1 minute after his submission to C.
Also his codes are a bit strange. Here are the codes of A,B and C in #257.
Many coders use "template" , on which they write codes. Usually, a person use the same template to avoid confusion. However, the three submissions seem to be based on different template. First code defines pair<int, int> as PII; but the second and third define pair<int, int> as pii; It would be too confusing!
The matters are almost the same in his last round — Bayan 2015 Contest Warm Up.
If he participated individually, I want to know why he made such a strategy.