摘要: "A Little Pony and Expected Maximum " $ ans = \sum_i^niP_\text{最大值为k}$ $ = \sum_i^n i((i)^k (i 1)^k) $ cpp include using namespace std; double qpow(do 阅读全文
posted @ 2019-10-31 19:06 dgklr 阅读(90) 评论(0) 推荐(1) 编辑