📜 WAYPOINT LESSON
Checkpoint — Hull Area
⭐ beginner⏳ 40 min read📍 Lesson 180 of 281
Mixed polygons with interior points and duplicates; the shoelace-over-input-order wrong answer is the graded failure.
Checkpoint — Hull Area. Line 1: n. Then n lines: x y. Print the DOUBLED area of the convex hull.
Duplicates and interior points must be discarded; the hull is what counts.