Check graph overlays, path bits, labels, and heap ownership

Choose the operation contract or failure response that matches each structure. Verify outputs against a direct reference model.

Lessons

• CSR delta overlays: stage road edits before compaction
• Reachability bitsets: precompute directed paths for a fixed graph
• Gap labels: compare dispatch order across middle inserts
• Skew heaps: meld priorities by swapping child paths

Design exercise

• Project: audit graph overlays, path bits, labels, and heap ownership
• Data Structures