3 commits

Author	SHA1	Message	Date
Ryan	40f6f6b436	3-4, 1hr	2024-12-30 17:26:57 +08:00
Ryan	b56bb2278e	add 3-2, took 2hr and more	2024-12-30 15:14:36 +08:00
Ryan	dd6c4dad47	map reduce intro, took 1.5 hr	2024-12-29 21:17:17 +08:00