@[Yaser](/space/show?uid=87676) 我也没看出来...
by retired_treasure @ 2018-05-07 08:45:01
@[Yaser](/space/show?uid=87676) 看完像是二分图
by retired_treasure @ 2018-05-07 08:45:18
%%%
>都是巨佬啊
by tocek_shiki @ 2018-06-06 21:00:57
一看数据范围就感觉不是dp，洛谷的标签是乱了么
by chdy @ 2018-10-15 18:20:08