is it be more better if we use {for}?

You can try training again and submitting the solution again, don't know if it'll work. But if your concern is whether or not it counts as completed, it does count, you wouldn't be able to see other people's answers if you didn't complete it, also it appears as completed in your profile.

Hi @Lohocola and welcome to Codewars!

You can print the inputs of any Codewars kata to the console using your languages "print/log/etc." command - learn how to do this here:

Troubleshooting guide

You can also join the #beginners channel on Codewars Discord for help on how to do this/advice on starting out on the site.

How can i know what's the others tests are?