@[SIXIANG](/user/298549) 除了把n改为n-1还有什么地方要改吗？Or2
by Paratrooper @ 2020-04-06 11:44:28
@[Paratrooper](/user/318556)
1. for循环那个需要枚举到倒数第二个也就是次大个
2. 一个浮点数除以整数还是取正，只有除以浮点数才阔以。至于为什么……这得问开发人员去了。
by SIXIANG32 @ 2020-04-06 11:44:45
@[Paratrooper](/user/318556) num是double型
by SIXIANG32 @ 2020-04-06 11:45:08
只有3个AC
```cpp
#include<iostream>
#include<stdio.h>
#include<math.h>
#include<algorithm>
using namespace std;
int main()
{
int n;
cin>>n;
int a[n];
for(int i=0;i<n-1;i++)
{
cin>>a[i];
}
sort(a,a+n);
int sum=0;
for(int i=1;i<n-1;i++)
{
sum+=a[i];
}
double num=n-2;
double aver=sum/num;
printf("%.2lf",aver);
return 0;
}
```
by Paratrooper @ 2020-04-06 11:47:59
@[SIXIANG](/user/298549) 还在吗？？？求求你帮我看看呀
by Paratrooper @ 2020-04-06 11:52:53
@[Paratrooper](/user/318556) 在
by SIXIANG32 @ 2020-04-06 11:56:11
@[Paratrooper](/user/318556) num要-2.0
by SIXIANG32 @ 2020-04-06 11:56:53
@[SIXIANG](/user/298549) 还在吗？先吱一声呀
by Paratrooper @ 2020-04-06 11:58:06
@[Paratrooper](/user/318556) 在啊
by SIXIANG32 @ 2020-04-06 11:58:31
@[SIXIANG](/user/298549) 谢啦，刚刚没刷新，没看见
by Paratrooper @ 2020-04-06 12:00:08