# 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:

```json
{"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`.