not exactly. i think if you sort the list that could help. have to try it out though

I can't solve too.
Possible solution is (sum - int).
But I'm not sure.
Array is not sorted
Perhaps "Memoization" and "Design Patterns" are actually used.

should i use other data structure or algorythm to solve that in python?

It will only return once, just 0.

for num in range(11):
  return num

You should never write this. Make sure you only return once.

thank for feedback.. but if i return then how i can i loop through .
just an example
def trial:
for num in range(11):
return num

then the function will break because of returing everytime...

because you're printing instead of returning

0 ==> 0
2 ==> 5
3 ==> 5
12 ==> 15
21 ==> 25
30 ==> 30
-2 ==> 0
-5 ==> -5

Input: 1: None should equal 5

this is my kata on codewar...

output is okay ... same to same
why i am still getting this error