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Is something wrong with codeforces judge?

Revision en1, by TimDee, 2023-07-04 14:04:20

TLDR somehow codeforces judge is working way slower than oj.uz

Hello codeforces! As the IOI is coming closer and closer, I started upsolving some of the IOI tasks. For many of you, i guess, it's not a secret that there is an IOI archive on codeforces.

Sadly I faced this problem (already at least twice): Same code running on oj.uz and on codeforces gets difent score. Surprisingly, smaller one belongs to cf.

As I thought, codeforces judge should be faster, no? Instead I have:

Problem IOI18_seats, TL on codeforces is 3 seconds, which should be enough for 2 seconds taking it to run on oj.uz

Another example:

History

 
 
 
 
Revisions
 
 
  Rev. Lang. By When Δ Comment
en6 English TimDee 2023-07-04 15:45:40 43
ru4 Russian TimDee 2023-07-04 15:45:16 39
ru3 Russian TimDee 2023-07-04 14:38:09 0 (опубликовано)
ru2 Russian TimDee 2023-07-04 14:37:28 353 (сохранено в черновиках)
en5 English TimDee 2023-07-04 14:36:49 353
en4 English TimDee 2023-07-04 14:30:37 59
en3 English TimDee 2023-07-04 14:29:23 0 (published)
ru1 Russian TimDee 2023-07-04 14:28:02 1361 Первая редакция перевода на Русский
en2 English TimDee 2023-07-04 14:19:15 568
en1 English TimDee 2023-07-04 14:04:20 810 Initial revision (saved to drafts)