#include <bits/stdc++.h>
using namespace std;
int main(){
    int  n,i,h=0,a[n];
    cin>>n;
    for(i=0;i<n;i++){
        cin>>a[i];
        h=h+a[i];
    }
    if(h<=100){
        printf("%.2f",h);
    }else{
        printf("%.2f",(h-100)*0.9+100);
    }
      
}
/**************************************************************
	Problem: 1160
	User: wengsihan
	Language: C++
	Result: Accepted
	Time:8 ms
	Memory:2080 kb
****************************************************************/