第1题-第几条明暗交错子序列

Status	Submit By	Time	Memory	Language	Code	Submit At
AC	luti	31ms	6.7 MiB	C++14(O2)	1.5 KiB	2026-8-30 10:51:34
AC	风往南	38ms	6.2 MiB	C	1.3 KiB	2026-8-31 15:35:33
AC	67XmgX53xo	74ms	6.2 MiB	C++	1.9 KiB	2026-8-30 15:43:42
AC	CodeFun5d0e39d11b	1397ms	11.3 MiB	Python 3	1001 Bytes	2026-8-31 11:56:08
AC	CodeFune7b7268815	1511ms	11.3 MiB	Python	1.3 KiB	2026-8-31 12:01:15
AC	可爱的奶茶	1522ms	44.5 MiB	Java	1.2 KiB	2026-8-31 16:09:58
AC	ipDPnt0THG	1677ms	44 MiB	Java	1.5 KiB	2026-8-31 15:39:12
AC	licat	1926ms	11.3 MiB	Python 3	1.4 KiB	2026-9-1 11:18:09
AC	h6zqAD0SVR	2290ms	11.3 MiB	Python 3	1.3 KiB	2026-9-1 12:28:18