Thank you! Spend hour too)))

definitely not a 6 kyu :D

"I'm struggling with a problem. My function seems to work, but it doesn't pass the random test. I always receive this message: 'expected: <...XIBKV zdvaGV JQaaMS [ ] QpbnKztT WW HovWwGJ ...> but was: <...XIBKV zdvaGV JQaaMS [ ] QpbnKztT WW HovWwGJ ...>'. But this doesn't make sense."

No random tests in C#

definitely not a 6 kyu kata, seems to be too easy

When an array in the array is null or empty, the method should return 0 too!

Read the description better next time, it'll save your time.

For those who have 'length of null' error - one of the test cases includes null value instead of subarray.
For better understanding:

[[1], [2, 4], [5, 6, 7], null, [6, 7, 8, 9]].

I've been suffering with this problem for an hour or so,this specific test in this kata just suck!

fun kata! thank you!

definitely not 6 kyu, it's way more easier than some 8 kyu

absolutely unreadable solution

OMG!Wasted so much time and didn't even think about it! Very clever solution!

what a horrible kata :@@@

Ай Молодець !

haahahaha krasaava!