#include <bits/stdc++.h>
using namespace std;

int main(){
	int a[1000],n,i,max = 0,s = 0;
	cin>>n;
	for(i = 0;i < n;i++){
		cin>>a[i];
		s = s + a[i];
		if(a[i] >= max){
			max = a[i];
		}
	}
	
	cout<<fixed<<setprecision(1)<<(max * 0.9 + s - max) * 0.9<<endl;
}


/**************************************************************
	Problem: 1427
	User: admin
	Language: C++
	Result: Accepted
	Time:10 ms
	Memory:2072 kb
****************************************************************/