@[chen_zhe](/user/8457) 这个数据加强好像咕了三年https://www.luogu.com.cn/discuss/81426
by CLCA_ @ 2022-04-04 23:02:36
借楼 O(20n) 的怎么卡啊 /yun
by MatrixCascade @ 2022-04-04 23:05:20
@[realMatrixCascade](/user/154101) 20n怎么做
by CLCA_ @ 2022-04-04 23:06:41
@[SharpnessX](/user/125454) https://www.luogu.com.cn/paste/gpb28urv
by MatrixCascade @ 2022-04-04 23:09:52