```
y=a[2];
a[2]=a[i];
a[2]=y;
```
应该是
```
y=a[2];
a[2]=a[i];
a[i]=y;
```
by Henry2012 @ 2023-04-17 13:12:11
@[sy1234567887](/user/965878) 已经改好了，求关注
```cpp
#include <bits/stdc++.h>
#define MAXN 1000
using namespace std;
int n;
int s;
int a[MAXN + 5];
inline int read()
{
int x = 0, y = 1;
char c = getchar();
while (c < '0' || c > '9')
{
if (c == '-')
y = -1;
c = getchar();
}
while (c >= '0' && c <= '9')
x = x * 10 + c - '0', c = getchar();
return x * y;
}
int main() {
n = read();
for (int i = 1; i <= n; i++)
a[i] = read();
//大概明白你的意思了，以a[1]为max，a[2]为min，但是过于复杂了，在比赛中容易TLE，把a[3]之后的加起来
for (int i = 2; i <= n; i++)
if (a[i] > a[1]) swap (a[i], a[1]);//swap函数可以直接将两个数交换数值看，之前的判断是反的
for (int i = 2; i<=n; i++)
if (a[i] < a[2]) swap (a[i], a[2]);
for (int i = 3; i <= n; i++)
s += a[i];
printf("%.2lf",double (s * 1.0 / (n - 2)));
return 0;
}
```
by Score_Elevate @ 2023-09-01 20:33:51