#include<bits/stdc++.h>
using namespace std;
int main()
{
	int n;
	cin>>n; 
	int apple[n],min=0,cnt=0,sum=0;
	for(int i=0;i<n;i++)
	{
		cin>>apple[i];
		if(i==0){
			min=apple[i];
		}else{
			if(apple[i]<min)
			{
				min=apple[i];
			}			
		}
	}
	
	for(int i=0;i<n;i++)
	{
		if(apple[i] != min)
		{
			sum+=apple[i];
			cnt++;	
		}
	}
	
	printf("%.1f",sum*1.0/cnt);
	return 0;
}

/**************************************************************
	Problem: 1218
	User: lzc
	Language: C++
	Result: Accepted
	Time:15 ms
	Memory:2072 kb
****************************************************************/