Topic 22 — Multi-D / Grid DP
Finished Mon, Sep 28, 2026, 1:58 PM ET: all 3 core problems closed, 3 problems closed that day.
Scheduled: Mon Sep 28, 2026 · Phase: Phase V — Decision Space · Topic: #24 · Builds on: Topic 21
Closed Sep 28 — the day the topic finished
| Issue | Problem | Set | Difficulty | Closed (ET) | Solution |
|---|---|---|---|---|---|
| #166 | LC 62 · Unique Paths | core | medium | Sep 28 | py · docs |
| #167 | LC 64 · Minimum Path Sum | core | medium | Sep 28 | py · docs |
| #168 | LC 1143 · Longest Common Subsequence | core | medium | Sep 28 | py · docs |
Open at release
| Issue | Problem | Set | Difficulty | Closed (ET) | Solution |
|---|---|---|---|---|---|
| #169 | LC 120 · Triangle | optional | medium | — | — |
| #170 | LC 63 · Unique Paths II | optional | medium | — | — |
| #171 | LC 72 · Edit Distance | deferred | medium | — | — |
| #172 | LC 97 · Interleaving String | deferred | medium | — | — |
| #173 | LC 221 · Maximal Square | deferred | medium | — | — |
20260928.175800.000000000 is timever for the UTC instant the core set completed; it tags 5b6a330, the last main commit before it.