寻找树的重心

Status	Submit By	Time	Memory	Language	Code	Submit At
AC	shtian	884ms	28.7 MiB	C++14(O2)	5.7 KiB	2025-6-19 9:25:58
AC	xyy135	1200ms	30.5 MiB	C++14(O2)	638 Bytes	2025-6-20 20:36:38
AC	five_rice_water	2043ms	28.9 MiB	C++14(O2)	617 Bytes	2025-6-19 11:42:38
AC	kcs007	2064ms	30.3 MiB	C++14(O2)	551 Bytes	2025-6-3 9:27:48