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Collections are a way for you to organize kata so that you can create your own training routines. Every collection you create is public and automatically sharable with other warriors. After you have added a few kata to a collection you and others can train on the kata contained within the collection.
Get started now by creating a new collection.
Wat
True, but the fact that so many think this is "best practice" is... awkward.
Testing if it's updated in new post...
Why is everyone using a lookup table of sorts? :V
(ok, so copy pasting others solutions to view timings apparently changes your own solution)
Imho it's not generally bad to use 'using namespace std;' in implementation files. It's contained there.
Where it gets really problematic is when you put it in header files as it "pollutes" everything which includes it.