#include <bits/stdc++.h>
using namespace std;
int main()
{
    int n;
    double s = 0;
    int a[15];
    int cnt = 0;
    cin >> n;
    for (int i=0;i<n;i++) cin >> a[i];
    int mi=a[0];
    for(int i=0;i<n;i++)
    {
        if(a[i]<=mi) mi = a[i];
        s += a[i];
    }
    for(int i=0;i<n;i++)
    {
        if(a[i]==mi)
        {
            cnt ++;
        }
    }
    cout<<fixed << setprecision(1) << (s-cnt*mi) / (n-cnt);
    
	return 0;
}
/**************************************************************
	Problem: 1218
	User: mariooo
	Language: C++
	Result: Accepted
	Time:37 ms
	Memory:2072 kb
****************************************************************/