总 k 次方差 - Easy Ver. - Problem Statistics

Status	Submit By	Time	Memory	Language	Code	Submit At
AC	aw2656	498ms	14.2 MiB	Python 3	438 Bytes	2026-3-22 22:06:50
AC	aw2656	514ms	13.6 MiB	Python 3	438 Bytes	2026-3-22 22:07:10
AC	lily	644ms	19 MiB	Python 3	320 Bytes	2026-1-31 21:40:32
AC	lover520	732ms	13.6 MiB	Python 3	449 Bytes	2026-3-20 23:14:52