PrincessQi @ 2022-02-09 15:57:10
除了 BZOJ4671 有别的题吗，
听说 loj 有但是我不知道是哪道
by wdsqwq @ 2022-02-09 15:59:48
%%%
by S00021 @ 2022-02-09 16:12:00
无意义膜拜真的好吗...
by Aleph1022 @ 2022-02-09 16:33:17
@PrincessQi loj U 群把妹王
by PrincessQi @ 2022-02-09 16:38:29
@Alpha1022 谢谢
by Ephemeroptera @ 2022-02-09 17:23:51
@PrincessQi yali集训那道？斯特林反演的真的太少了。。。。