@[Su_mmer_nshine](/user/969221)
```cpp
#include<bits/stdc++.h>
using namespace std;
double pin(double a[],int m){
double sum=0;
sort(a+1,a+m+1);
a[1]=0;
a[m]=0;
for(int i=2;i<m;i++) sum+=a[i];
sum/=m-2;
return sum;
}
int main(){
int n,m,k=1;
double b[201];
cin>>n>>m;
for(int i=1;i<=n;i++){
double a[101];
for(int j=1;j<=m;j++) cin>>a[j];
b[k]=pin(a,m);
k++;
}
sort(b+1,b+n+1);
printf("%.2f",b[n]);
return 0;
}
```
by pyy1 @ 2023-09-05 11:49:46
n代表同学数，最后sort的时候应该是
```cpp
sort(b+1,b+n+1);
```
by JERRY_Feng @ 2023-09-05 11:54:11