#include <bits/stdc++.h>
using namespace std;
int main()
{
int n;
float sum=0;
cin>>n;
int a[n];
 
for(int i=0 ; i<n ; i++){
    cin>>a[i];
    sum+=a[i];
}
 
if(sum>100){
    int t=sum-100;
    t=t*0.9;
    sum=100+t;
}
printf("%.2f",sum);
 
 
     
return 0;
 
}
/**************************************************************
	Problem: 1160
	User: lijinkai
	Language: C++
	Result: Accepted
	Time:8 ms
	Memory:2072 kb
****************************************************************/