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.
What if instead of eliminating them, you just skip them in your loop?
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You're calculating n!. You cannot do that. The last test case is zeros(1e9).
Read the comments.
Your code can't handle the second test (from > to) correctly.