BubbleProperHalf

Another broken problem, what the author think about of the following input:
1
1
Another input:
3
1 1 1

Ooops, this time there was a typo in the problem statement. It should say "select (n+1)/2 numbers from the set"

Correct answers in your tests are: + and ++-

Thanks for the quick catch, keep up the good work!

any hints for this task?:P