#include <iostream>
#include <iomanip>
using namespace std;

int main(){
	int a[1000];
	int n,i,j,min,s = 0;
	cin>>n;
	
	for(i = 0;i < n;i++){
		cin>>a[i];
		s = s + a[i];
	}
	
	min = a[0];
	for(i = 0;i < n;i++){
		if(a[i] < min){
			min = a[i];
		}
	}
	
    int x = 0; 
    for(i = 0;i < n;i++){
		if(a[i] == min){
			x++; 
		}
	}
	
	double v = (s - x * min) * 1.0 / (n - x);
	cout<<fixed<<setprecision(1)<<v<<endl;
}
/**************************************************************
	Problem: 1218
	User: admin
	Language: C++
	Result: Accepted
	Time:18 ms
	Memory:2072 kb
****************************************************************/