ar7L's blog

minimum number of Operations

By ar7L, history, 5 years ago, In English

How can I attack problems like,"minimum number of operations to sort an array or permutation", Can anyone give me some lists of problems?

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5 years ago, hide # |
 
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just fucking practice random problems

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    5 years ago, hide # ^ |
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    Solving random problems is not so efficient imo.

    Solving a batch of problems on the same topic (and finding common ideas / techniques) may be much more insightful than solving those problems several weeks / months apart. In the latter case, it's more frequent to end up not solving a problem, reading the editorial and realizing that the you'd encountered the necessary idea a lot of times before, but you didn't remember it.

    I'm interested in other opinions, though. How do you usually practice and is it effective?

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      5 years ago, hide # ^ |
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      I mean I think it's useful to solve a lots of dp problems or graph problems specifically sometimes.But should things be that specific like — "Minimum number of operations to sort an array type problems"??

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        5 years ago, hide # ^ |
         
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        It's still better than solving random problems. I also think that topic is not too specific (there are a lot of problems like that).

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5 years ago, hide # |
 
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https://atcoder.jp/contests/arc132/editorial/3200

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