hmehta's blog

Topcoder SRM 775
By hmehta, history, 5 years ago, In English

Hey All!

Topcoder SRM 775 is scheduled to start at 11:00 UTC -5, Jan 16, 2020. Registration is now open in the Web Arena or Applet and will close 5 minutes before the match begins.

Thanks misof for writing the problems and coordinating the round.

This is the second SRM of Stage 2 of TCO20 Algorithm Tournament and TCO20 Regional Events Qualification

Stage 2 TCO20 Points Leaderboard | Topcoder Java Applet | Upcoming SRMs and MMs

Some Important Links
Match Results (To access match results, rating changes, challenges, failure test cases)
Problem Archive (Top access previous problems with their categories and success rates)
Problem Writing (To access everything related to problem writing at Topcoder)
Algorithm Rankings (To access Algorithm Rankings)
Editorials (To access recent Editorials)

Good luck to everyone!

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Comments Comments (16)
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5 years ago, # |
  Vote: I like it +10 Vote: I do not like it

Cannot login into the Web Arena. Receiving "Login time out. Please try again at later time."

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    5 years ago, # ^ |
      Vote: I like it +3 Vote: I do not like it

    Same, although the applet seems to work.

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    5 years ago, # ^ |
      Vote: I like it 0 Vote: I do not like it

    You should be able to log in now! :) The issue has been fixed.

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      5 years ago, # ^ |
        Vote: I like it 0 Vote: I do not like it

      Yes, logged in, thank you.
      Hope that such situation wouldn't repeat during the round.

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5 years ago, # |
  Vote: I like it +10 Vote: I do not like it

Hello, I wanted to ask that when is the round rated for us? 1. after register 2. after opening a problem(but not submitting)

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    5 years ago, # ^ |
      Vote: I like it +24 Vote: I do not like it

    Yes, the rules say that — If you register for a rated event and proceed to open any of the problems during the coding phase, your rating will be affected following the match.

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5 years ago, # |
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Gentle Reminder: Match begins in 2 hours!

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    5 years ago, # ^ |
      Vote: I like it 0 Vote: I do not like it

    In the Java applet, I and many people I know can't enter past contest's arena.

    Is there any problem going on with the arena?

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      5 years ago, # ^ |
      ← Rev. 2   Vote: I like it 0 Vote: I do not like it

      Unfortunately, indexing of the old problems and data is very slow and thus it takes a lot of time on some of them.

      Very sorry about that!

      I would suggest using Web Arena for the same for the moment. We are not focussing on improving this as we are dedicated to bringing the new arena asap.

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        5 years ago, # ^ |
          Vote: I like it 0 Vote: I do not like it

        That doesn't affect live contests right? I assume it is safe to be on the applet for today's SRM.

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5 years ago, # |
  Vote: I like it +18 Vote: I do not like it

Why is the web arena so slow to load? I tried registering 3 minutes prior the ending time of registration but it didn't open :(

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    5 years ago, # ^ |
      Vote: I like it +19 Vote: I do not like it

    The arenas have been shit for a long time, that's a well-known fact.

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5 years ago, # |
  Vote: I like it +11 Vote: I do not like it

Everyone's having such interesting contests... and I'm just sitting here wrangling pandas.DataFrames.

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5 years ago, # |
  Vote: I like it +19 Vote: I do not like it

Draft of the editorial: click here

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5 years ago, # |
  Vote: I like it +9 Vote: I do not like it

in EnlargeTheCave is there any need of BFS?

count all resticted '#' that is Adjacent to 'K' and subtract it out from total number of '#'.

Correct me if i am wrong?

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    5 years ago, # ^ |
      Vote: I like it 0 Vote: I do not like it

    You are wrong, this doesn't even work on the examples. The kobolds can block you from accessing parts of the rocks. Remember that the cave must be connected, you cannot just change random '#'s into '.'s.

    E.g., example 3 is the following:

    {"###K########",
 "#.#K########",
 "..#K########",
 "############"}
14

    The biggest cave you can make has area=9, even though you have a lot of rocks on the right.

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