二叉树前序遍历第 k 个节点

Status	Submit By	Time	Memory	Language	Code	Submit At
AC	plosa	315ms	8.3 MiB	C++20(O2)	221 Bytes	2025-10-23 22:38:17
AC	ECUST小瘦猪	318ms	8.3 MiB	C++20(O2)	546 Bytes	2025-10-8 20:50:55
AC	lqz	329ms	8.4 MiB	C++20(O2)	641 Bytes	2025-10-21 20:25:04
AC	AHU大肥鸭	333ms	8.5 MiB	C++20(O2)	229 Bytes	2025-10-7 21:41:57
AC	csbendan	339ms	8.4 MiB	C++20(O2)	231 Bytes	2025-11-22 19:46:01
AC	qianfu	349ms	8.3 MiB	C++20(O2)	201 Bytes	2025-10-14 20:42:20
AC	CYMario	354ms	6.4 MiB	C++20(O2)	365 Bytes	2025-9-26 22:37:50
AC	lain	393ms	8.3 MiB	C++20(O2)	343 Bytes	2025-11-8 8:00:29
AC	nesk	410ms	8.3 MiB	C++20(O2)	402 Bytes	2025-11-2 17:51:23