就这数据范围 $O(nm)$ 本来就能过吧/fad
by FunnyCreatress @ 2021-01-23 10:56:13
块长设成n不就是没分块吗/jk
by 鏡音リン @ 2021-01-23 10:56:13
这O(nm)随便过吧
by _5011_ @ 2021-01-23 11:03:06