thanks, it's clear now

Only sums of elements of the input array are allowed. You cannot write 144 as a sum of some elements of [50, 40, 30, 20, 10] because any sum of such elements is a multiple of 10. 90 is a correct answer because 90 = 50 + 40 and it is not possible to get a larger sum divisible by 9 using numbers from the input array.

in an example we have an array of [50,40,30,20,10] that equal 150 in total, and k = 9
so I got in my result 144, 144 is a multiple of 9 but it's not working and they said the correct output should be 90
can someone explain it for me please, maybe I didn't understand the kata

On one hand I agree that it would've made it easy and that it should require effort to solve it.

BUT! Perhaps MENTIONING THAT WE CANNOT USE BIGINT in the kata description would've been most wonderfully, awesomely, magnificently excellent and logical, no?!

So people wouldn't wrack their brains wondering why the hell "BigInt is not defined" and wasting time trying to solve the issue, - instead of concentrating on solving the actual problem?
Goddammit, this is so frustrating.

It does not work because in the node vs 8 it had not yet been implemented.

Because it would make the kata trivial and not worth of its rank. This kata is ranked blue for a reason, and it's supposed to be difficult.

--address equal (address-1)

Please, Can you explain this code!

I have the same problem, dont undestand why......

Why? The submission tests are not the same as the sample tests. You need to make sure your code works for all valid inputs and handles invalid inputs if necessary. The error should guide you.

The code work correctly in my text editor, and the test goes well, but when I submit the code I get syntax error !!! so like this error should be displayed when I test the code not just when I submit it