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Codeforces Beta Round #52 (Div. 2)
By RAD, 13 years ago, translation, In English
Good evening! 

I am glad to invite you to participate in Codeforces Beta Round #52 (Div. 2). Today's round was prepared Michael Mirzayanov, Max Ivanov and Maria Belov. 

It's possible that "out of the competition"-participants will not be able to use the tab "hacks". Do not panic, on the next Div. 2 Round we will necessarily fix it. 

Good luck!
Artem Rakhov and Codeforces team
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Comments Comments (19)
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13 years ago, # |
  Vote: I like it +9 Vote: I do not like it
why delay the contest again?


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13 years ago, # |
  Vote: I like it 0 Vote: I do not like it
How much time to System Testing.?

I remember there was Chatting option on Codeforces. What happened to that? missing that.........
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13 years ago, # |
  Vote: I like it +1 Vote: I do not like it
Is there something wrong? My submitted solution for problem A disappeared. :-ss
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13 years ago, # |
  Vote: I like it +1 Vote: I do not like it
System testing already started but there are some bugs in UI.
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13 years ago, # |
  Vote: I like it 0 Vote: I do not like it
I think in tests for problem A there is extra whitespace. Can you check the first pretest?
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  • 13 years ago, # ^ |
      Vote: I like it +3 Vote: I do not like it
    No, everything is correct. The first pretest is the first sample test.
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    • 13 years ago, # ^ |
        Vote: I like it 0 Vote: I do not like it
      Yes, and my program worked correctly for the first sample when I ran the custom test. It didn't pass the pretests though. Then I added handling extra whitespace and it passed.
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    • 13 years ago, # ^ |
        Vote: I like it +5 Vote: I do not like it
      OK, I figured it out. Apparently test files have Windows line endings but the input in the custom test has Unix line endings.
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13 years ago, # |
  Vote: I like it +3 Vote: I do not like it
Still System is testing LoL... take my cpu!!
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13 years ago, # |
  Vote: I like it 0 Vote: I do not like it
Someone knows a tricky test case for problem D :s
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13 years ago, # |
  Vote: I like it 0 Vote: I do not like it
Someone knows a tricky testcase for Problem D ?
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  • 13 years ago, # ^ |
      Vote: I like it 0 Vote: I do not like it
    Test cases used for grading should be revealed after the contest.
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13 years ago, # |
  Vote: I like it +14 Vote: I do not like it

Today there were some issues with database performance (after migration to another server). It causes all inserts and/or updates to be very slow. It will be investigated. So today we had slow judging and some other inconveniences. Sorry for that. I know that "ratings" were not updated correctly, it will be fixed soon (I mean handle colors).

Anyway round itself passed without critical issues. Also the problems were clear and interesting. Thank you, RAD. Our congratulations refer to Petrozavodsk, to a PertSU university student zurg, who won this round! See you in Petrozavodsk!

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13 years ago, # |
  Vote: I like it 0 Vote: I do not like it
I guess the 9th test case of C hasn't shown completely.
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13 years ago, # |
  Vote: I like it 0 Vote: I do not like it
No editorial here?
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11 years ago, # |
  Vote: I like it +6 Vote: I do not like it

Problem B of this contest has weak test case. Consider case: 8 1 7 3 7 4 5 6 2 8

My AC code outputs 2 7 though proper AC should print 0 0 because it can't be done with one inversion.

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