📜 WAYPOINT LESSON
Checkpoint — Boundary Reading
⭐ beginner⏳ 40 min read📍 Lesson 188 of 281
Difference-array outputs graded on asymmetric ops where reversed-interval reading fails; reading the input format precisely is the skill.
Checkpoint — Boundary. Line 1: n q. Then q lines: l r v. After all ops, print every final value, one per line.
Read the op format exactly: add v on [l, r] inclusive.