{
  "context": "This criteria evaluates how well the engineer uses asyncstdlib's parallel iteration capabilities to combine multiple async streams. The focus is on proper usage of asyncstdlib.zip() for parallel iteration and asyncstdlib.list() for collecting results from async iterables.",
  "type": "weighted_checklist",
  "checklist": [
    {
      "name": "Uses asyncstdlib.zip()",
      "description": "Solution uses asyncstdlib.zip() (or imports it as 'a.zip' from 'asyncstdlib as a') to combine the three input streams in parallel",
      "max_score": 50
    },
    {
      "name": "Uses asyncstdlib.list()",
      "description": "Solution uses asyncstdlib.list() (or imports it as 'a.list' from 'asyncstdlib as a') to convert the async iterable result into a list",
      "max_score": 30
    },
    {
      "name": "Correct stream combination",
      "description": "Solution correctly passes all three input parameters (users, amounts, timestamps) to asyncstdlib.zip() in the correct order to create tuples of corresponding elements",
      "max_score": 15
    },
    {
      "name": "Proper async handling",
      "description": "Solution properly awaits the asyncstdlib.list() call since it returns an awaitable, demonstrating understanding that asyncstdlib functions return awaitables that must be awaited",
      "max_score": 5
    }
  ]
}