#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: mc002
	Language: C++
	Result: Accepted
	Time:8 ms
	Memory:2072 kb
****************************************************************/