OpenAI

Verified interview challenge

Data labelling task scheduler

Assign labelling work across people and models while keeping the workload balanced as the schedule runs.

Unlock with Full Access

The challenge

A labelling job needs a sequence of task, model and human assignments. Each person must receive enough distinct tasks, and the assignments for each task must stay balanced throughout the sequence. Construct a schedule that satisfies those requirements using the minimum number of assignments.

The order matters
A balanced final total is not enough. The schedule is checked after each assignment.

What you'll practise

  • Constructing a valid schedule

    Turn the assignment rules into a sequence that meets every person's workload requirement.

  • Maintaining balance

    Track how work is distributed across models and people at each stage.

  • Boundary cases

    Handle empty inputs and combinations that cannot meet the requested workload.

Your coding workspacePreview
solution.pyPython 3.13
def build_balanced_schedule(
    task_count, model_count, human_count, minimum_tasks_per_human
):
    # Your implementation goes here
    pass
Test cases

Run your code to see results.

Full instructions, starter code and test cases included with Full Access.