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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.
exit code: 139
means segfault.Would be simpler if you gave your language. Seems to be C++. I tried a few solutions and had no problem. 665 guys passed the C++ kata.