题号好评
by Retired_lvmao @ 2019-07-01 09:20:36
@[expect](/space/show?uid=28910) 就是满足条件的矿产的数量$\times$满足条件的矿产的权值和
by duyi @ 2019-07-10 17:06:15
我可以考古吗
by Yusani_huh @ 2020-08-07 15:18:18