Same thing for python

fwiw, same problem in go - the simplest naive solution worked, to my surprise.

I don't see why it is an issue... I put the tag "Optimization" because some comments said that brute force was not sufficient.
The kyu is not given by the author but by a moderator.
C++ waas one of the last translation hence I reduced the range in random tests. Moreover C++ seems to be very fast at CW. Last: maybe you are too good, you have almost exactly the same solution as mine:-)

Thanks for your posts. I was at last able to fix that.

If you edit the kata you will see at the first line of public tests: using namespace std;
but when you "Train" or "Train Again" CW doesn't show it and doesn't use it!...
despite the fact that I re-published the C++ translation a lot of times.
Sorry for the inconvenience! Fortunately it is easy to fix by the user all the more
that there are no problem in the ""Submit tests.

I think this will add a list inside a list