MikeMirzayanov's blog

By MikeMirzayanov, 12 years ago, translation, In English

Thank you all for participating in Codeforces Beta Round # 2. I hope you enjoyed it. You may discuss the problems and system in comments. Please express your opinion, especially if you notice any inappropriate behavior. And as always, I will read with interest the suggestions for improvement.

Congratulations to the three leaders: RAVEman, GarnetCrow and ivan.popelyshev!

See you at Codeforces Beta Round # 3.

P.S. And by the way, the round tutorial is waiting for a volunteer. It is desirable that it will be one of the leaders of today's competition. The tutorial should be in Russian and in English. It will be published on the homepage and later will be available via special link from the contest page.

Announcement of Codeforces Beta Round #2
 
 
 
 
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12 years ago, # |
  Vote: I like it 0 Vote: I do not like it

in problem A, what is the answer for this test case?:
4
a -9
a 10
c 1
b 1


  • 12 years ago, # ^ |
      Vote: I like it +12 Vote: I do not like it
    a
  • 12 years ago, # ^ |
      Vote: I like it 0 Vote: I do not like it
    next thing:
    3
    a 3
    b 2
    a -1
    • 12 years ago, # ^ |
        Vote: I like it 0 Vote: I do not like it
      a

      We have only one clever test:
      3
      a 3
      b 2
      a -2

      answer: b
      • 9 months ago, # ^ |
          Vote: I like it -9 Vote: I do not like it

        Can you please tell me how to approach the ques, it is not getting clear through the tutorial?

        • 9 months ago, # ^ |
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          Bro, it was 11 years ago, I don't remember it at all :) Send me a link to the problem statement, and I'll try my best in solving it from scratch

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

            https://codeforces.com/problemset/problem/2/A In this question, I am not able to understand how hashing will be used, I am able to figure out brute force one.

            also please share some views, I have solved more than 350 ques on cf but in a contest only able to get a and b sometimes. How to improve on this.

            P.S- I never expected you will reply so fast.

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

Could anyone explain the statement of problem C for me please ? I can't understand it :(

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    7 years ago, # ^ |
    Rev. 2   Vote: I like it +1 Vote: I do not like it

    Three circles are given. You need to find a point on the plain such that we can see all the circles from this point with the same angle. And if there is no such point, the program should not output a thing.

    On this picture from point B we can see the circle with angle ABC.