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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.
Thanks
Print the inputs at the beginning of your code.
How do you debug ? -> Amongst other things by printing the input.
Nag author long enough so they finally add the details into failed assertion messages.
how to get failed testcase details