error messages are swaped expected -> actual

passed test, error at stderror. what's wrong? (ruby language)

result comments for last tests are swaped: expected <-> actual

there must be wrong with the tests. all passed but something wrong still carries on. and make the whole test fail

all tests are passed but cannot submit my answer.
seems like there is a bug for c++

strange errors found:
STDERR:
main.cpp:21:17: error: use of undeclared identifier 'sqrt'
return ceil(sqrt(sum));
^
1 error generated.

I am not providing such code line;

my code passes all tests, and cannot submit it.
something is wrong.
language c++

the use of static in classes for cpp language is not and 8kyu question imho

would not harm in the description how to treat zeroes. and would help a lot

For another example for n = 4
The answer is 1 because having pills A B C D Andrzej can take pills A B and the friend can take pills B C
Note: Andrzej is not able to accurately measure time during the task.

I think this is not correct.
They have maximum of 35 minutes, and the glowing pill takes 30 minutes to get the effect.
Hence both friends can only have 1 pill and see its effects.
In case none of the 2 firstly taken pills make them glow, they still have 2 more pills to try and see which makes
them glow, but they wont have more time to wait, they only have 5 mins remaining, and need 30 more minutes to see
who glows next.

sorry but I do not get it. An empty string is not uppercase. And a string withoug alphabet letters is not uppercase. :(

Edge cases for c++ are wrong. To Expect true (are upper-case) when no letters are given is not correct .