FelixMP's blog

By FelixMP, history, 2 months ago, In English

I have added this year's Spain Olympiad in Informatics to the gym.

Contest facts:

  • Two 5-tasks contests with OI scoring (subtasks).
  • Statements in English and Spanish.
  • Problems are not ordered by difficulty.
  • Problem authors: FelixMP, Sadito10, BlancaHM.
  • Difficulty of fully solving problems should be like a Div2 round, perhaps a bit easier in general.
  • The easier problems may be a bit more based on implementation and common techniques (compared to a CF round). But the harder problems require observations and should be interesting to more advanced contestants too.

Enjoy!

 
 
 
 
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2 months ago, # |
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Auto comment: topic has been updated by FelixMP (previous revision, new revision, compare).

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2 months ago, # |
  Vote: I like it +66 Vote: I do not like it

Thank you!

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7 weeks ago, # |
  Vote: I like it +9 Vote: I do not like it

How to solve estatuas?

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    7 weeks ago, # ^ |
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    Here are some hints for one solution (there are multiple possible approaches)

    Hint 1
    Hint 2
    Hint 3
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      7 weeks ago, # ^ |
      Rev. 2   Vote: I like it 0 Vote: I do not like it

      What about factorial? Is the following solution intended or an overkill? (I think it uses no more than $$$59$$$ queries, but it's too slow to test it on all the inputs, and the checker gives $$$100$$$ points even if the solution uses too many queries).

      Solution
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        7 weeks ago, # ^ |
          Vote: I like it +20 Vote: I do not like it

        Again there are multiple approaches, here is the idea from the official solution:

        Spoiler
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7 weeks ago, # |
  Vote: I like it +4 Vote: I do not like it

Where can we find an editorial for this olympiad?