#include<bits/stdc++.h>
using namespace std;
int score[1001],n,maxn=0,minn=20,sum=0;
int main(){
    cin>>n;
    for(int i=0;i<n;i++){
        cin>>score[i];
    }
    for(int i=0;i<n;i++){
        sum+=score[i];
        if(score[i]>maxn)maxn=score[i];
        if(score[i]<minn)minn=score[i];
    }
    sum-=maxn;
    sum-=minn;
    printf("%.2f",sum/(n-2));
    
    return 0;
}

输出是0.00，求助