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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.
Are you using int for fibonacci numbers and unsigned long long for an answer?
Then use only unsigned long long for both.
Expected: equal to 213265164688
Actual: 7106734480
Random_tests
Expected: equal to 5219878179714624
Actual: 15446324800
i pass all tests except these , any help ?