#include<bits/stdc++.h>
using namespace std;
int main()
{
    int n,i,j=0,x=0,s;
    cin>>n;
    int m[n];
    for(i=0;i<n;i++){
        cin>>m[i];
        if(i!=0){
            if(m[i]<m[x]){
                x=i;
            }   
        }
        j+=m[i];
    } 
    s=n;
    for(i=0;i<n;i++){
        if(m[x]==m[i]){
            j-=m[i];
            s--;
        }
    }
    printf("%.1f",1.0*j/s);
}
/**************************************************************
	Problem: 1218
	User: wangyiyang
	Language: C++
	Result: Accepted
	Time:25 ms
	Memory:2072 kb
****************************************************************/