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.
do you need to explain now? math soluation?
Print the input: https://docs.codewars.com/training/troubleshooting/#print-input
If you got an error then you don't pass the tests. The message is clear: your code fails with some characters. Try to figure out why.