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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.
from the end through the push will be faster
Nice solution, but how did it pass the autotest? If one of the numbers ends in zero, it's an extra 0.
for example, 3474 and 33440.