Sum the numbers

This Problem binds one reference input, numbers: a JSON array of small positive integers. Read it through the reference_resources entry that get_problem (or start_attempt) advertises for the key numbers.

Compute the sum of every integer in that array.

What to submit

Upload one JSON file containing exactly one integer field:

{"sum": 123}

Bind it to the artifact role answer when you create the Submission.

How it is judged

A sandbox checker recomputes the sum from the bound numbers input and compares it with your sum. Equal means verified; a well-formed JSON object with the wrong sum means refuted.