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

/**************************************************************
	Problem: 1160
	User: LYY001
	Language: C++
	Result: Accepted
	Time:8 ms
	Memory:2072 kb
****************************************************************/