https://vjudge.csgrandeur.cn/problem/HDU-5159 题目链接。
by double_zero @ 2023-03-21 10:46:20
@[double_zero](/user/297515) 线性性不需要独立吧
by Aleph1022 @ 2023-03-21 10:58:50
@[Alpha1022](/user/75840) 不懂啊，能细说证明吗。
by double_zero @ 2023-03-21 11:03:45
@[double_zero](/user/297515) 如何证明期望的线性性质？ - 折纸的回答 - 知乎
https://www.zhihu.com/question/59209320/answer/254305885
by Guoyh @ 2023-03-21 11:35:08
@[Alpha1022](/user/75840) 俺会了，谢谢您。
by double_zero @ 2023-03-21 11:35:56
@[Guoyh](/user/88449) 谢谢，刚找到了。
by double_zero @ 2023-03-21 11:36:10