Errichto's blog

Invitation to Oct-Easy '15 on HackerEarth — nice problems!
By Errichto, 9 years ago, In English

Hello Codeforces Community!

I invite you to October Easy '15 on first day of October at 19:00 MSK. Contest will be of difficulty similar to div2 CF round. Will you manage to solve all 6 problems in 3 hours? Will anybody do it in 1 hour?

Problems will be given in random order. Each problem is worth 100 points but scoring is partial so try to pass as many tests as possible!

I want to thank Arjit Srivastava (belowthebelt) for his great help with HackerEarth's system and website. And big thanks go to Akul Sareen (akulsareen) — it was so nice to work with him. He is a tester and editorials' writer. I hope I will work again with these two guys.

Enjoy problems!

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9 years ago, # |
  Vote: I like it +54 Vote: I do not like it

Seems like you have been setting a lot of problems recently. Kudos!

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    9 years ago, # ^ |
      Vote: I like it +56 Vote: I do not like it

    Thanks. Though it would be good not to have issues with them. I'm trying my best.

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9 years ago, # |
  Vote: I like it +20 Vote: I do not like it

Start in two hours. Have fun!

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9 years ago, # |
  Vote: I like it +26 Vote: I do not like it

The problems were fun, thanks!

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

Very nice problems once again from you :P Unfortunately, I forgot about this contest and I came in the middle so I didn't have time to think about the task with bowling, it seems to be a pretty cool one :)

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9 years ago, # |
  Vote: I like it +28 Vote: I do not like it

For upsolving I recommend two problems especially: Stickman (medium) and Climbing (hard).

Which problems were cool, which were not? Feedback please.

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

    I gave all of them "5 stars" except for the "Bear and Chocolate" in the post-contest feedback.

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

    i like "Bear and crying" and "Stickman". Also last 2 probs were good, but i spent a lot of time for debugging formulas in "Stickman".

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    9 years ago, # ^ |
      Vote: I like it +8 Vote: I do not like it

    I like A and E. I think all of them were cool, those two are just my favourites :D

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    9 years ago, # ^ |
      Vote: I like it +40 Vote: I do not like it

    My favorite problem from the set is definitely Bear and Stickman. Simple question, with a simple figure — and a very cool solution. Took me a decent while to get the hang of that question properly. :)

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    A couple of things which I would want to mention related to this contest:

    1. Congratulations to I_love_Tanya_Romanova, sugim48 and alecsyde for securing the top 3 positions!

    2. A huge shout out to shef_2318 for being super patient, and providing Russian translations, which I am sure would have been very useful for Russian participants.

    3. And importantly, I would want to mention that it was amazing to work with Errichto — he was very clear with his thoughts, ideas with respect to all problems, and in general related to the contest, and platform etc. Also, various discussions on scenarios of competitive programming in various countries with him were extremely interesting. Would definitely want to work with him in future again! :)

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