#include<bits/stdc++.h>
using namespace std;
int main(){
	int n,x2=0,z=0,j=0;
	double m=0;
	cin>>n;
	int a[n];
	for(int i=0;i<n;i++){
		cin>>a[i]; 
		z+=a[i];
		
	}
	if(z>100){
		x2=z-100;
		x2=x2*0.9;
		m=100+x2;
		printf("%.2f",m);
		
	}else{
		printf("%.2f",z);
	}
}

/**************************************************************
	Problem: 1160
	User: wuzhijing
	Language: C++
	Result: Accepted
	Time:12 ms
	Memory:2072 kb
****************************************************************/