Also, examples show "17 17". It is not clear what this is intended to convey.

The input is 0 [-1]. Actual and expected are not shown; this could be achieved by replacing == by ===. Random tests do not actually guarantee "All numbers in will be positive integers", just that they are non-zero, but generated zeroes will be shown as input.

Yep, the contents of wiki are very different and tests are not passing. Too bad, because this kata is very real-life unlike most of them here.

Fixed. All solutions invalidated I guess. :P

i added a return value to the initial code so that it does not throw

I just ran this and I'm not getting any errors:

def diagonal(n : UInt64, p : UInt64) : UInt64
  42_u64
end

I'd say yes to both questions about the buttons.

No need to create a new issue about the same problem. Closing this one.

:magic_wand:

so uhm. this issue already exists two posts down. would have been better if you posted a reply to there. not that it really matters. in any case. I sent some wizard on the case and they fixed it from what I can tell so uhm. try again?

It's solvable (just pasted and re-run my solution), with the right method I assume !

impossible to solve in Ruby

The kata seems to be broken in Crystal, and in similar way in C#: it relies on the overflow of 31-bit signed integer and expects negative values when the MSB of the result is set.

Sounds like typecasting issue in random test generation.