#include<bits/stdc++.h>
using namespace std;
int main()
{   
    int n,min,t=0;
    float sum=0;
    cin>>n; 
      
    int a[n];
    for(int i=0;i<n;i++){
        cin>>a[i];
        sum+=a[i];
        if(i==0){
            min=a[i];
        }else{
            if(min>a[i])min=a[i];
        }
    }
      
    for(int i=0 ; i<n ; i++){
        if(a[i]==min){
            t++;
        }
    }
      
    sum-=(t*min);
    n-=t;
      
    printf("%.1f",sum/n);
  
  
    return 0;
}
/**************************************************************
	Problem: 1218
	User: chenmingyu
	Language: C++
	Result: Accepted
	Time:23 ms
	Memory:2076 kb
****************************************************************/