二叉树后序遍历第 k 个节点

Status	Submit By	Time	Memory	Language	Code	Submit At
AC	ECUST小瘦猪	311ms	8.3 MiB	C++20(O2)	548 Bytes	2025-10-8 20:55:55
AC	CYMario	334ms	6.4 MiB	C++20(O2)	347 Bytes	2025-9-26 23:01:25
AC	nesk	334ms	8.7 MiB	C++20(O2)	398 Bytes	2025-11-3 12:18:17
AC	AHU大肥鸭	355ms	8.4 MiB	C++20(O2)	227 Bytes	2025-10-7 21:42:58
AC	qianfu	365ms	8.3 MiB	C++20(O2)	254 Bytes	2025-10-14 20:41:24
AC	plosa	369ms	8.4 MiB	C++20(O2)	299 Bytes	2025-10-23 22:54:39
AC	lqz	382ms	8.4 MiB	C++20(O2)	754 Bytes	2025-10-21 20:14:00
AC	csbendan	383ms	8.5 MiB	C++20(O2)	239 Bytes	2025-11-22 20:00:02
AC	lain	390ms	8.3 MiB	C++20(O2)	422 Bytes	2025-11-8 7:55:04