#include <bits/stdc++.h>
using namespace std;
int main(){
    int a[15]={0},m=0,n,x,c=0,t=0;
    float j=0;
    cin>>n;
    for(m=0;m<n;m++){
        cin>>a[m];
        j=j+a[m];
    }
    x=a[0];
    for(m=0;m<n;m++){
        if(x>a[m]){
            x=a[m];
        }
}
    for(m=0;m<n;m++){
        if(a[m]==x){
            c=a[m]+c;
            t++;
        }
    }
    n=n-t;
    j=j-c;
    printf("%.1f",j/n);
}
/**************************************************************
	Problem: 1218
	User: linmiaoling
	Language: C++
	Result: Accepted
	Time:17 ms
	Memory:2076 kb
****************************************************************/