Loading collection data...
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.
Thank you for report
Got it. :D
Change the remainder to 1e9 + 7.
Thank you for your tip.
Random tests added.
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Execution Timed Out (12000 ms)
It cannot be solved by using loop?
I need some tips.
This comment is hidden because it contains spoiler information about the solution
I lost lot a time... but it gives me a great realization
OMG This code so sick.