salt_n_ice's blog

doubt regarding using std::move and std::swap for gnu pbds
By salt_n_ice, 4 years ago, In English

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I tried solving this using the ordered_set gnu pbds
I did dfs along with using swap and move methods for merging the sets of each node's children. The time complexity should be nlogn but why is it giving TLE on test 15?

dfs function
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4 years ago, # |
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Don't act like you really know how move works like, it's much more difficult than one can imagine. Read this.

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    4 years ago, # ^ |
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    Okay move function doesn't work here but is there any way to make this approach work?

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4 years ago, # |
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x.swap(ret). I also believe that ordered_set is not the intended solution anyway.

and move is useless here

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