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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.
will return an int value representing the unknown rune or -1 if no such rune exists.
okay nevermind haha
I don't understand this test case:
19--45=5? answer -1
19--45 = 64 right?
So how is the questionmark equal to -1?
and also what does it say then, 19--45=5-1 ?
What's going on here?