"Ok, lesson is over. Let us do a task with while."
Not clear?

We use the same method, but I am reminded that "specified syntax is not used"(while||do while)

Cool I guess

the description and title are there, and they're 100% explanatory about the requirement

It doesn't matter what the author says (and however politely he does so), the true specifications are defined by the tests that the user has to pass; the description only serves as a warning about what the user will have to deal with. That's how TDD/BDD works, and how CW works respectively.

In fact, it's the author's fault that his "anticheat" is so weak, and you can bypass it easily.

Of course. You have access to the solution in /home/codewars/solution.txt. You can read that file and parse it.

It's as possible as V8, the javascript engine that powers chrome and nodejs, is able to interpret the code to run it. It's called parsing.

Cool I guess? I don't see it explicitly required anywhere. My solution wasn't flagged as insufficient by the test cases. So it is sufficient to pass the task suite.