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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.
The task is great! I would add a little note that a student can take the same course only once.
This comment is hidden because it contains spoiler information about the solution
Hello everybody. I have passed all of the sample test cases, but I can't pass the random testL the probles is that the all of the values of the
total_costshould be lower than expected values. As a result,amount_payablecolumn is calculated wrongly. @bornForThis, could you help me, where I made a mistake?