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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.
The same happened to me but I fixed it by removing some print statements. Just in case anyone else has this issue.
Yup, it seems to be a rule in the Russian version. But it completely makes sense if you think about it. Any fleet of battleships that starts off with their own ships crashing into eachother is not very likely to win any battle!
Yup, thats it. When you actually submit, there is a much longer list of tests to run, and apperently, the numbers are MUCH larger in those tests.