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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.
i solved the problem and pass all the tests, but the system do not allow me to read the others' solutions and withheld me solution, why?
almost 372 ~~
so it should use >>>=? you are so glad.