#include <iostream>
using namespace std;
int main(){
double sum = 0, avr;
int n,max=0,min=100;
int a[100];
while (cin >> n){
for (int i = 0; i < n; i++){
cin >> a[i];
if (a[i] > max) max = a[i];
if (a[i] < min) min = a[i];
sum = sum + a[i];
}
sum = sum - max - min;
avr = sum / (n - 2);
cout.precision(2);
cout << fixed << avr << endl;
sum = 0;
max = 0;
min = 100;
}
}
sum,max,min最后要重新赋值。