retrograd's blog

By retrograd, history, 4 years ago, In English,

Hello! I am a fairly advanced programmer (although I'm pretty new), and I know the basic algorithms and data structures used for most problems. However, I don't know how to get better from this state onwards.

I should say that my strength is mainly DS problems. Greedy, D&C, DP I do pretty well (once I recognize a specific-type problem), constructive algorithms seem very hard to me (for example link). For DS, I know pretty much all there is to know about segment trees, BIT, sqrt-decomposition (I call it a DS, don't blame me :D), BSTs, hash, etc (the basic ones), although problems that involve advanced tricks with these (e.g. persistent segment trees, lazy propagation) seem very appealing.

I want to prepare mysef for this year's ACM-ICPC contest, as it is my first year in Uni. I have been learning algo intensively since December.

I would be grateful if you know any good lists of problems that are really crucial and/or teach useful new techniques, as I am stuck momentarily. I have read the results on Google for ACM algorithms and such, so a personal response would be a lot more appreciated :).

I will also try to keep a list updated with interesting problems and techniques, in case other people struggle with the same issue. Maybe this tread will become a learning portal for more people :D.


  • ( -> there are a lot of algorithmic problems greatly explained, as well as tricks and great algorithms -- the website is in Russian, although it can be translated using Google Translate -- great resource

Thank you a lot!

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

It's maybe strange that green coder gives you some suggestion, but still here you go. Link

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    4 years ago, # ^ |
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    Thanks for the resource! I will be looking through it and see what I can find!

    EDIT: The link you gave me is absolute beast! I wish there was something like that in English, too, as some of the explanations are hard to understand through Google Translate.

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

Why is this post getting negative feedback? I did not have any bad intentions...

4 years ago, # |
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Auto comment: topic has been updated by retrograd (previous revision, new revision, compare).

3 years ago, # |
Rev. 2   Vote: I like it +15 Vote: I do not like it

Congrats for reaching IGM in just 2 years. Can you tell us how you did it? :* Did e-maxx resource suggested by the green guy helped you?