count和n都是整型，需要在任意一个之前加```(double)```强制转换一下
by k1saki @ 2019-10-14 16:28:23
@[Not_devil](/space/show?uid=255197) 这道题我有题解qwq
by EarthGiao @ 2019-10-14 17:04:42
@[huxiaobang](/space/show?uid=32879) 好的~
by Not_devil @ 2019-10-14 21:13:10
@[EarthGiao](/space/show?uid=186489) 哈哈哈哈好 我看看
by Not_devil @ 2019-10-14 21:13:24
```cpp
double ans=count / n;
```
改为
```cpp
double ans=(count*1.0) / n;
```
by XianChanting @ 2019-12-01 10:09:37