Loading collection data...
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.
because, 3 row inc a runs 10 times untill its 0 {a=0} and after 3 row comes fourth dec b which runs also 10 times so it will be -10 - 1 -1 ... 10 times, - 20
Sorry but your code is wrong. Before posting an issue look at the top of the page to see how many people passed the kata (2475 in Python). If this number is high enough chances unfortunately are that it is your code that has problems.
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It`s so simple, what am i doing... =\