hmehta's blog

By hmehta, history, 2 months ago, In English,

TCO18 Algorithm Round 2B and Parallel Rated SRM

TCO18 Algorithm Round 2B and Parallel Rated SRM is scheduled to start at 11:00 UTC -4 on June 14, 2018. You will be able to register for the SRM in the Arena or Applet 4 hours prior to the start of the match. Registration closes 5 minutes before the match begins, so make sure that you are all ready to go.
Click here to see what time it starts in your area.

Algorithm Round 2 Qualified Competitors: https://tco18.topcoder.com/algorithm/online-round-results/ and https://tco18.topcoder.com/algorithm/byes/

If you are participating from web arena — You can switch to the parallel rated fun round in the mentioned way:

Don’t know how to compete in Topcoder SRMs?

Check out this guide to successfully compete in an algorithm match.

You can compete using:

  • Topcoder Web Arena(Beta) - Please watch this video for step by step guide.
  • Topcoder Java Applet - You can refer to this guide here to set up the applet. (Note that those who have Java 8 installed on their machine will see a security issue — You will have to add Topcoder in security exceptions in Java Control Panel. Please refer to the details in the guide here)
 
 
 
 
  • Vote: I like it  
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2 months ago, # |
  Vote: I like it +5 Vote: I do not like it

When I enter Web Arena it says "Completing login... One moment please..."

But It didn't open from half an hour

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2 months ago, # |
  Vote: I like it 0 Vote: I do not like it

Just a reminder, 1 hour to go.

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2 months ago, # |
  Vote: I like it 0 Vote: I do not like it

What is the difference between Round 2B and Fun Round 2b ?

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    2 months ago, # ^ |
      Vote: I like it 0 Vote: I do not like it

    Round2B is By Invitation only For Participants who qualify to it

    Fun Round 2b is rated For everyone and everyone can participate in it

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2 months ago, # |
  Vote: I like it +74 Vote: I do not like it

Cannot enter the room.

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2 months ago, # |
Rev. 2   Vote: I like it +43 Vote: I do not like it

I registered for the contest. But I am unable to find the Enter button. Is everything right with everyone else?

PS: I am using arena.

Is someone in applet also facing the problem ?

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    2 months ago, # ^ |
      Vote: I like it +28 Vote: I do not like it

    I also can´t. I tried restarting applet and now it´s frozen at login screen.

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      2 months ago, # ^ |
      Rev. 2   Vote: I like it +16 Vote: I do not like it

      Same here.

      Topcoder screwed it up again, no surprise.

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        2 months ago, # ^ |
          Vote: I like it -10 Vote: I do not like it

        Now it´s saying something super weird: Your JRE does not support AES-128, login not allowed.

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2 months ago, # |
  Vote: I like it +14 Vote: I do not like it

Cannot enter my room

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2 months ago, # |
  Vote: I like it +21 Vote: I do not like it

cannot login

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2 months ago, # |
  Vote: I like it +34 Vote: I do not like it

Thought of logging off and logging back in. Can't log in now. I am using the java applet

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    2 months ago, # ^ |
      Vote: I like it +10 Vote: I do not like it

    I got logged off just going to another room.

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2 months ago, # |
  Vote: I like it +14 Vote: I do not like it

Now Im not even able to login

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2 months ago, # |
  Vote: I like it +5 Vote: I do not like it

I can't login to Applet

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2 months ago, # |
  Vote: I like it +77 Vote: I do not like it

okay let's just watch world cup

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2 months ago, # |
  Vote: I like it +34 Vote: I do not like it

Seems like the server is offline. Web arena says "Login time out. Please try again at later time" when trying to log in.

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2 months ago, # |
  Vote: I like it +43 Vote: I do not like it

My JRE does not support some stuff it seems.

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2 months ago, # |
  Vote: I like it +10 Vote: I do not like it

Cannot login using the applet

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2 months ago, # |
  Vote: I like it +18 Vote: I do not like it

Showing incorrect username and password while I am pretty sure the details are correct.

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2 months ago, # |
  Vote: I like it +38 Vote: I do not like it

Now in Applet It says Your JRE Doesn't Support AES-128.login not allowed

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2 months ago, # |
  Vote: I like it +46 Vote: I do not like it

Can't log in. I even take one day off to participate this one. Can you guys don't schedule on weekday next time?

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2 months ago, # |
  Vote: I like it 0 Vote: I do not like it

Can't login, getting error "Your JRE does not support AES-128, login not allowed."

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2 months ago, # |
  Vote: I like it +10 Vote: I do not like it

I wanted to compete in the parallel round. Then I forgot... and I'm glad I did, I was spared some disappointment.

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    2 months ago, # ^ |
      Vote: I like it +10 Vote: I do not like it

    Sorry! We are looking into it! Will revert asap!

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      2 months ago, # ^ |
        Vote: I like it 0 Vote: I do not like it

      Can you just cancel this round and schedule it some other day respecting the World Cup schedule?

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      2 months ago, # ^ |
        Vote: I like it 0 Vote: I do not like it

      Any official announcement maybe? Some of us need to go to work. And watch world cup there on a big screen :)

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      2 months ago, # ^ |
        Vote: I like it +5 Vote: I do not like it

      So, you will reschedule the contest on another day? or it'll be today?

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2 months ago, # |
Rev. 2   Vote: I like it +15 Vote: I do not like it

Cannot login!!! says Time-out on every server! is something wrong?!

UPD: now it says invalid login on the arena alternatively with time-out!!

I thought TC was stable at least in contest like these :'(

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2 months ago, # |
  Vote: I like it +14 Vote: I do not like it

Looks like they will rate this round based on the number of login attempts ;) Those who tried the most times will proceed to Round 3 (just kidding)

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    2 months ago, # ^ |
      Vote: I like it +5 Vote: I do not like it

    Or maybe the users who receives the max number of upvotes here on codeforces by commenting various issues they are facing with topcoder.

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2 months ago, # |
  Vote: I like it 0 Vote: I do not like it

Now it says request time out

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2 months ago, # |
  Vote: I like it 0 Vote: I do not like it

Can't enter using applet or the web arena!!!

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2 months ago, # |
  Vote: I like it +116 Vote: I do not like it

Is there any chance that this round will happen today, or are there already some contestants who saw the problems?

I'd like to know if I should wait, or return to work.

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    2 months ago, # ^ |
      Vote: I like it +5 Vote: I do not like it

    I think it's safe to assume this match won't happen today. I don't think topcoder can achieve:

    1. Fix server.
    2. Inform all participates new schedule today and make sure all participates get the message before match start.
    3. Doesn't have schedule collision with participates.

    Wasted one of my vacation.

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2 months ago, # |
  Vote: I like it -14 Vote: I do not like it

login page is showing "invalid username or password". 20 min passed and still i am unable to login.

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2 months ago, # |
  Vote: I like it +21 Vote: I do not like it

Please update us with what to do now!

This is worrying, we have other things to attend to other than retrying the server afraid at some point it might come back :(

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2 months ago, # |
  Vote: I like it 0 Vote: I do not like it

Still facing server issue
Can't Login both in arena and applet
TC should adjust the time after fixing server issues

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2 months ago, # |
  Vote: I like it 0 Vote: I do not like it

Why Topcoder arena sucks!! I have tried to do SRM on it for last 2 SRMs and I wasn't even able to log in. The case is same today as well. I don't know what sci-fi mission Topcoder people are on because they haven't been able to build a proper lag free website for the last couple of years.

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2 months ago, # |
  Vote: I like it +5 Vote: I do not like it

Official announcement please?!

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2 months ago, # |
  Vote: I like it +9 Vote: I do not like it

Finally Applet Opened and Contest Will start in 15 minutes

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2 months ago, # |
  Vote: I like it +13 Vote: I do not like it

Announcement from the Arena: "Welcome back everyone, we'll be starting in approximately 15 minutes"

( I managed to login successfully )

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2 months ago, # |
  Vote: I like it 0 Vote: I do not like it

Finally the applet works now! whew!

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2 months ago, # |
  Vote: I like it 0 Vote: I do not like it

Contest starts in 9 mins

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2 months ago, # |
  Vote: I like it 0 Vote: I do not like it

Finally ready to start!!

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2 months ago, # |
  Vote: I like it 0 Vote: I do not like it

Is anyone else having issues with the fun round? I registered for the fun round (from the web version, not from the applet) and now I can't even see the fun round, let alone enter the rooms.

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2 months ago, # |
Rev. 2   Vote: I like it +127 Vote: I do not like it

I ranked really high in the room:

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2 months ago, # |
  Vote: I like it 0 Vote: I do not like it

When will you send the t-shirts?

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2 months ago, # |
  Vote: I like it +46 Vote: I do not like it

My solution on easy was simple O(n).

Spoiler

My medium solution was similar to the model one, but jihoon's solution can be made into O(nlgn). Neat!

Spoiler

And the problems were great. Thanks lewin!

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    2 months ago, # ^ |
      Vote: I like it +10 Vote: I do not like it

    I see hard is quite straightforward! Just match small interval around each element and do some kind of minimum cost matching.

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      2 months ago, # ^ |
      Rev. 2   Vote: I like it +8 Vote: I do not like it

      For hard, I did these observations :

      Spoiler

      After then, as you said, it's a min cost matching.

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2 months ago, # |
  Vote: I like it +6 Vote: I do not like it

So it was not rescheduled? just postponed 45min? LOL

It was scheduled for a working day, so I've even istalled this crappy jnlp with plugins at my computer at work (arena is so shitty that this is not even an option). The applet was not working for 30 min so I've left and go back to work, but the round was not rescheduled?

Note to myslef: only atcoder has rounds on saturdays with awesome problems. So don't waste your time on other sites especially topcoder.

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    2 months ago, # ^ |
      Vote: I like it -12 Vote: I do not like it

    If you want note something for yourself don't write it here. Did you even read the problems from this round ?

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      2 months ago, # ^ |
        Vote: I like it +26 Vote: I do not like it

      The applet/arena are piles of garbage regardless of the quality of the problems and that can't be denied. When there is absolutely nobody who doesn't dislike the platform, you can note things for others as well. It was absurd that they still kept the round and many wouldn't even know about it. The only good thing about the topcoder is the quality of problems (sometimes)

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        2 months ago, # ^ |
          Vote: I like it +6 Vote: I do not like it

        The good news are that apparently there's going to be round 2C.

        Quote from the email from Topcoder admin:

        "Our next SRM on June 26 at 7:00 UTC -4 will have a parallel TCO Round 2C. This round will open to all round 1 advancers who have yet to qualify for round 3. The TCO18 website and calendar will be updated with this information as soon as possible."

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          2 months ago, # ^ |
            Vote: I like it 0 Vote: I do not like it

          Does it mean that all results of 2A and 2B are disclaimed? And now will be one round for all and 400 best will proceed?

          This is such an obscure email, like political statement :)

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            2 months ago, # ^ |
              Vote: I like it 0 Vote: I do not like it

            This round will open to all round 1 advancers who have yet to qualify for round 3.

            So, I think that it's just one more possibility to advance for round 3 and it shouldn't affect participants, which were already advanced through round 2A or 2B.

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        2 months ago, # ^ |
          Vote: I like it +11 Vote: I do not like it

        It's clear situation about applet/arena, also it's clear that there were no solution about rescheduling round or not, because both decision will be good only for some part. I wrote that to disagree about quality of the problems from topcoder, shit happened, but they quite always very good, so please don't mix the issues and the quality of the problems it's clear, that peoples write topcoder not to enjoy applet/arena.

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2 months ago, # |
  Vote: I like it +21 Vote: I do not like it

Ratings for the 2B round are calculated, but those for the parallel srm are not. Is it ok?