Tier 1 — Instant Lookup, In-Place Marking & Prefix Compression
M1.2: The Prefix Odometer & First-Row/Col Matrix Markers
Bottleneck: The brute-force bottleneck this module eliminates — see M1.2-prefix-odometer-and-matrix-markers/README.md.
Pre-launch
This module is still in the pre-launch phase.
This site is a YC preview. Only M0.1 — memory boxes and the 10^8 ops/sec clock — ships video, audio, the quiz, and the toy. M1.2 stays on the syllabus so the map is honest; the filmed lesson is not in this build.
Open the live M0.1 lesson →Planned problems · 4
- Subarray Sum Equals K
- Set Matrix Zeroes
- Product of Array Except Self
- Range Addition / Flight Bookings