#include <iostream>
#include <vector>
#include <algorithm>
using namespace std;
int main()
{
int n;
while (cin >> n, n) {
int buf, sum, sz;
vector<int> s;
while(n--) {
cin >> buf;
s.push_back(buf);
}
sort(s.begin(), s.end());
sum = 0;
sz = s.size();
for (int i = 1; i < sz-1; i++)
sum += s[i];
cout << sum/(sz-2) << endl;
}
return 0;
}