MikeMirzayanov's blog

Codeforces Beta Round #95 (Div. 2)
By MikeMirzayanov, 14 years ago, translation, In English

Hello!

On Friday, November 25 at 19:00 I'm waiting you on the Codeforces Beta Round #95 (Div. 2). This round is prepared by me. It is not easy to prepare a round, but it is always useful and interesting. By my example, I want to hint to top participants that rounds of famous people — it's always interesting!

Apart from me RAD, Nickolas and Delinur were doing work on the round. Moreover, Edvard still do not know, but very soon I will ask him to solve this round as a tester:)

It will be unusual round because you will find six problems. It's a little experiment — I hope that it will help each participant to find interesting problems to themselves.

I believe that the out-of-competition participants from Div.1 will have some fun solving the round.

The problem scoring is: A - 500, B - 1000, C - 1500, D - 2000, E - 2500 and F - 2500.

Good luck!

MikeMirzayanov

UPD. The competition has ended. Here are the results. First place was taken by the representative of China — liuq901. Congrats! It was nice to see such interest to the contest. Thank you for your participation!

Unfortunately, I do not have the opportunity to write a tutorial. If you deal with it I will be grateful.

  • Vote: I like it
  • +75
  • Vote: I do not like it

Comments Comments (52)
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14 years ago, hide # |
 
Vote: I like it +12 Vote: I do not like it
For Div 1 participants, I hope you'll not make cloning ID :P
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14 years ago, hide # |
 
Vote: I like it +4 Vote: I do not like it
What will be the Rating system for 6 problems???
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  • 14 years ago, hide # ^ |
     
    Vote: I like it +1 Vote: I do not like it
    And what about the difficulty, will the sixth problem be more difficult than fifth in usual round?
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14 years ago, hide # |
 
Vote: I like it +3 Vote: I do not like it
What will be the POINT distribution of those 6 Problem  ??
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14 years ago, hide # |
 
Vote: I like it +5 Vote: I do not like it
In the email it says that the round is for DIV-2 i.e. anyone below 1650 rating. What is the division cut rating? I thought it was 1700 after the recent color changes...?
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14 years ago, hide # |
 
Vote: I like it +2 Vote: I do not like it
Six Problem ? there is one more easier or harder problem?
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14 years ago, hide # |
 
Vote: I like it 0 Vote: I do not like it
Can someone please tell me why nC4*mC1*(n+m-5)C(t-5) wrong for the problem c....
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14 years ago, hide # |
 
Vote: I like it 0 Vote: I do not like it
I don't like 6-problems Codeforces round.
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14 years ago, hide # |
← Rev. 2  
Vote: I like it +4 Vote: I do not like it

I liked the idea of 6 problems, but i think problems were easy , it should be a little difficult or the old format of contest must be chosen. :)

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14 years ago, hide # |
 
Vote: I like it +3 Vote: I do not like it
First time I solved 5 problems :)
But I failed E because of too little array size (105 instead of 2*105). Very disappointing bug :|
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14 years ago, hide # |
 
Vote: I like it +5 Vote: I do not like it
To Admins ,
When i'm taking my hacking tour i open source code of contestant and i found Indecent words on his\her code in problem "B" Moreover his handle name is
I know this is not the right place to report about this cases but i didn't found any way rather than this.
btw,I hacked his/her problem #"A".and this is my punishment ,what about admins punishment.
thanks.
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14 years ago, hide # |
 
Vote: I like it 0 Vote: I do not like it
weak pretest :-( failed 3/6
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14 years ago, hide # |
 
Vote: I like it +8 Vote: I do not like it
Wait, next contest is on 

19:00 Moscow time

why it must on 07.00 PM, it's like 22.00 PM in my country every contest. .
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14 years ago, hide # |
 
Vote: I like it +13 Vote: I do not like it
This is really a nice problem set. Thank you MikeMirzayanov. :)
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14 years ago, hide # |
 
Vote: I like it +12 Vote: I do not like it
Will anyone take the trouble of writing the editorials(especially for D,E,F) since Mike Mirzayanov cannot to it for some reasons...It will be very obligatory deed.
Another thing is that codeforces is taking editorials very lightly...There should be one tab for editorials like problemset.....It sometimes becomes very difficult searching for the editorials.That should add more value to the site.
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14 years ago, hide # |
 
Vote: I like it 0 Vote: I do not like it
Did anyone else also feel problem A was not really clear? I got 3 penalties in that. :(
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14 years ago, hide # |
 
Vote: I like it 0 Vote: I do not like it
The First place liuq901 make 5 successful Hacks and 3 unsuccessful Hacks but 
system wrote s\he make 5 successful Hacks and 2 unsuccessful Hacks
what's the wrong ???.
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14 years ago, hide # |
 
Vote: I like it 0 Vote: I do not like it
Can anyone give some hints on how to solve Prob. F ??
thx a lot!
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4 years ago, hide # |
← Rev. 2  
Vote: I like it 0 Vote: I do not like it

great

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