How points work
- Easy problem: 10 points
- Medium problem: 20 points
- Hard problem: 30 points
- Quiz: 2 points per correct answer (your best score counts)
- Each problem counts once. Up to 150 points a day.
- Problems count when solved while signed in. Hints are free; showing the solution first, or pasting ours, earns no points for that problem.
Code runs in your own browser, so scores are on trust. We remove entries that don't look right.