你被卡常了
开个 O2
by Ryo_Yamada @ 2021-05-05 14:44:32
这题数据水到 $n^2m^2$ +O2 都能过
by Ryo_Yamada @ 2021-05-05 14:44:56
谢了，开O2优化过了
by love_a_horse @ 2021-05-05 14:56:19
ioikai
by dmy2007 @ 2021-05-05 15:07:10