??

yangwenbin @ 2020-02-26 19:43:44

by dingcx @ 2020-02-26 19:48:59

反正没人A

by jijidawang @ 2020-02-26 19:49:01

@yangwenbin +1

by jijidawang @ 2020-02-26 19:49:18

我WA两个点，\mathcal{O}(1)的

by C　C　A @ 2020-02-26 20:03:23

@jijidawang 读入都是O(n)......

by lihaobushiren @ 2020-02-26 20:07:52

数据没问题。

有三种特殊情况\ 1.k=0\ 2.统计A类数的个数是0\ 3.统计B类数的个数是0\ 。。。\ 嘤嘤嘤

by jijidawang @ 2020-02-26 20:07:54

@♂♂ 读入不是 n,k 嘛,\mathcal{O}(1)

by lihaobushiren @ 2020-02-26 20:08:32

我改了三把才改对

by jijidawang @ 2020-02-26 20:12:04

@lihaobushiren thx