#include<bits/stdc++.h>
using namespace std;
int main(){
    double n,a,maxn = -11,minn = 99,sum = 0;
    cin>>n;
    for (int i = 1;i<=n;i++){
        cin>>a;
        if (a>maxn){
            maxn = a;
        }
        if (a<minn){
            minn = a;
        }
        else{
            sum+=a;
        }
    }
    printf("%.2lf",sum/(n-2));
}

哪错了？？？