第3题-子树与节点对的距离和

Status	Submit By	Time	Memory	Language	Code	Submit At
AC	ID3J5Rciut	324ms	18.1 MiB	C++17(O2)	1.6 KiB	2026-7-29 23:15:50
AC	HwC6kHv6ln	528ms	18.7 MiB	C++17	1.9 KiB	2026-3-25 18:16:52
AC	哒哒哒哒哒	1987ms	39.9 MiB	C++98	2.3 KiB	2026-6-29 1:00:47
AC	TaZi	2198ms	107.4 MiB	Java	3.2 KiB	2025-10-26 12:12:37
AC	Sfwp86FjXA	4520ms	111.5 MiB	Java	2.4 KiB	2026-3-30 15:39:51