Thank you, but I am using right one of that ways :)

Now my trouble is to find right way to compare expressions :)

thanx, I have already understand that I have missed that :)
during debug, I missed that I should compare with 1214 not 1200 🙂

Sorry but I can't understand where you see the border of 3 or 4 yeras.
Task description shows that population greater or equal to p = 1200 inhabitants!!!

So both numbers: 1213 and 1214 are greater than 1200.

Explain

1213 or 1214 it does not impact on exercise solution test plan!

issue in the test plan code!

The problem is in the "Basic Test" block last step, when you press "ATTEMPT" !

See steps below:
1). 1000 * 2 + 50 + 1214
2). 1141 * 2 + 50 + 1214
3). 1214 * 2 + 50 + 1214
1214 - 3

I think, cotrol number should be 3 but in test block exist 4.

but if I found and error or trouble in test scripts how can I discuss it with platform owner ?

I know about float number rounding methods !!!
If script run successfully out of platform, means that problem in the test scripts !!!
I even know where the problem is !!! :)

Can you show me the bug ?
Same code run perfectly out of this platform with same input parameters !!!

why some comments are hidden ???

I think this Kata have failed test script!
One of tests have incorrect input parametr!