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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.
Dear @Outstandinggirl13 I think the time gap between when I solved it and the following comment is over 6 months, thus your comment now puts me in 14 month gap from the solution I thought of. So you cannot expect me to remember the solution. From what I can remember, I got lucky with the test cases and tested with the numbers at the end to be honest.
This comment is hidden because it contains spoiler information about the solution
why can't we use bigInt ?