Ah, yes I see now, thanks

It works, it's just too slow ;-)

doesn't work for next_bigger(19999999)

I learned a lot about sum method here. I never even thought about it taking a block. Awesome!

...whether any combination of 3 numbers sum to 0.

You are allowed to use a number more than once, as long as you use only 3 numbers total (e.g. 0+0+1 ).

0 + 0 + 1 is 1, not 0.

I am failing 2-5 test cases for which my solution returns the correct value on my machine and on REPLIT. I printed the return value and the log on these says false, but the result is 'expect: false, got: true'. I don't understand, why my solution always returns the correct value according to the log but a few are counted as incorrect?

uniq method isn't needed