@[chen_zhe](/space/show?uid=8457)
by 01190220csl @ 2019-04-30 17:05:58
标算的思路是正确的，但$[l_i=1](1-p)^{i-1}$加了吗？
by 01190220csl @ 2019-05-02 22:51:13
@[01190220csl](/user/61068) 你咕了
by s_r_f @ 2019-12-18 22:45:34
@[01190220csl](/user/61068) 你的暴力写错了
by s_r_f @ 2019-12-18 22:45:46
考古干嘛
by 01190220csl @ 2019-12-19 14:14:11