#include <bits/stdc++.h>
using namespace std;
int main(){
	int n,i,min,k=0;
	cin>>n;
	int a[n];
	float s=0.0;
	cin>>a[0];
	min=a[0];
	for(i=1;i<=n-1;i++){
		cin>>a[i];
		if(a[i]<min)
			min=a[i];
	}	
	for(i=1;i<=n;i++){
		if(a[i-1]==min){
			k=k+1;continue;} 
		s=s+a[i-1];	
	}
	s=s/(n-k);
	printf("%.1f",s);
	return 0;
	}

/**************************************************************
	Problem: 1218
	User: fzy001
	Language: C++
	Result: Accepted
	Time:13 ms
	Memory:2072 kb
****************************************************************/