Sammarize's blog

Codeforces Round 110
By Sammarize, 13 years ago, translation, In English

Hello!

Welcom to the todays round! Note that this is last possibility to training before VK Cup on Codeforces — don't miss your chance! I hope, everybody will find interesting problems for him, you will not have misunderstanding with statements and there will have a harmony beteen your your solutions and our tests.

I'm an author of todays round. My name is Valeriy Samoylov, a graduated student of SPb SU. I want to thank Artem Rakhov (RAD) and Gerald Agapov (Gerald) for great help in investigation of problems.

And so I want to thank Maria Belova for translation of the statements and Alexanber Kouprin (Alex_KPR) for the statement prereading and the picture =)

Please, pay attantion to unusual problems cost in the first division:

500 — 1000 — 1500 — 2500 — 2500

And without surprise in the second division:

500 — 1000 — 1500 — 2000 — 2500

Good luck for all!

Round is postponed to 30 minutes by technically reasons. Registration is ending in 21:25.

  • Vote: I like it
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  • Vote: I do not like it

Comments Comments (65)
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13 years ago, # |
  Vote: I like it +5 Vote: I do not like it

I'm having problems when viewing task A and D for CF109 div 1 round. (http://mirror.codeforces.com/contest/154/problem/A) (http://mirror.codeforces.com/contest/154/problem/D) Error is: Unable to parse markup [type=CF_TEX]

Same here too: http://mirror.codeforces.com/blog/entry/456 but error is: Unable to parse markup [type=CF_HTML]

Anyone experiencing same problem?

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13 years ago, # |
  Vote: I like it +1 Vote: I do not like it

10 more minutes to practise !!!

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

It has been delayed for 10 minutes?

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    13 years ago, # ^ |
      Vote: I like it +6 Vote: I do not like it

    Looks like yes.

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

    20 minutes more :( I have to work :'(

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

    All right~ Now I have plenty of time for a cup of coffee~ It is 1:12 in the morning here... Quiet night~ :)

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

Any who know ¿? is wrong with Codeforces Round #110 ???

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

delay += 20 ;

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13 years ago, # |
  Vote: I like it -12 Vote: I do not like it

What's going on?

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13 years ago, # |
  Vote: I like it +12 Vote: I do not like it

contest is started at 9:30?? 30 minutes delay?

WHY???????

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13 years ago, # |
  Vote: I like it -15 Vote: I do not like it

+30 minutes.... WTF??? :|

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13 years ago, # |
  Vote: I like it +7 Vote: I do not like it

I guess that next delay is 30 minutes. (10 -> 20 -> 30)

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    13 years ago, # ^ |
      Vote: I like it +35 Vote: I do not like it

    10 -> 20 -> 40?

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    13 years ago, # ^ |
      Vote: I like it +34 Vote: I do not like it

    no delay sequence is Geometric progression. so: (10 -> 20 -> 40)

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13 years ago, # |
  Vote: I like it +34 Vote: I do not like it

All the Chinese will cry...

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

So sleepy......It's 1:15 AM in China...

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13 years ago, # |
  Vote: I like it +30 Vote: I do not like it

Sorry for delay, some technical problems around "Unable to parse" forced to move the start.

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

    Seems like it was unable to parse problem statement? :-)

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    13 years ago, # ^ |
    ← Rev. 2   Vote: I like it +33 Vote: I do not like it

    I just thought because it's a Feb 29th round =)

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

started a new bbt episode!

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

Problem D (Suspects) was interesting.I got WA on pretest 2 i.e. 3 2 -1 -2 -3 Can somebody please tell why the answer cannot be Lie Truth Truth

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    13 years ago, # ^ |
      Vote: I like it +1 Vote: I do not like it

    It definitely can, but not necessary. We can't assume for all of them do they tell truth or lie.

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

      Thanks.I had misread the question ....Missed the part "you have to be absolutely sure..."

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

    This is only one possible assignment. For your scenario the following are possible: T T L, T L T, L T T As you can see any suspect could have lied or told the truth, therefore it's undefined for all of them.

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

Is system testing going to start soon? Or we can go sleep?

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13 years ago, # |
← Rev. 3   Vote: I like it +16 Vote: I do not like it

D1P1

"Insert one letter to any end of the string."
"Delete one letter from any end of the string."

I just mistake it for only in the end of string...

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    13 years ago, # ^ |
      Vote: I like it +6 Vote: I do not like it

    I mistake it for insert or deleto any pos of the string...T T

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13 years ago, # |
  Vote: I like it +16 Vote: I do not like it

k = 1 in Div1-D......... well this is just mean.

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13 years ago, # |
  Vote: I like it +15 Vote: I do not like it

When will the system testing start? It's already 4 o'clock in China...I'm very sleepy >_<...

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13 years ago, # |
  Vote: I like it +14 Vote: I do not like it

very nice problem set, thanks :)

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

Nice problems! 156A is tricky!

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

    I agree with you.I get WA in 156A because I misunderstand it.

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

1246567

The output of double format in C# code is wrong. There is a comma(','), not a period('.').

I think my solution is correct. but I got "wrong answer". is this a system problem or my fault?

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

    I think you have to set the locale of your program to "en-US", but still looks like you will get Wrong Answer.

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

    juancate is correct (in "but still looks like you will get Wrong Answer") — you are expecting, that the smallest circle is red, but it's not always truth

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13 years ago, # |
  Vote: I like it +7 Vote: I do not like it

Looking for the editorial... When will it be available?

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

    Today in the evening or night.

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

      When do you offer the editorial of the contest??

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

    Russian editoral of your division have publicated already, you can use google translate. But it is better to wait to English version.

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

Does anybody know if the english version of the editorial is avaliable?

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

No editorial yet now !!! is it published in any other blog ??? one helper has said about russian version... but I've not found any link so that I can use google translator ...

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11 years ago, # |
  Vote: I like it -8 Vote: I do not like it

please provide the tutorial for this contest...!!

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