#include <bits/stdc++.h>
using namespace std;
int main(){
    int a[15]={0},m=0,n,x,d=0,f=0;
    float e=0;
    cin>>n;
    for(m=0;m<n;m++){
    	cin>>a[m];
    	e=e+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){
    		d=a[m]+d;
    		f++;
    	}
    }
    n=n-f;
    e=e-d;
    printf("%.1f",e/n);
}
/**************************************************************
	Problem: 1218
	User: lvrenxiang
	Language: C++
	Result: Accepted
	Time:18 ms
	Memory:2076 kb
****************************************************************/