ACACACACAC

#include<bits/stdc++.h>
using namespace std;
float ans;
int type_num,n;
int main(){
    cin>>n;
    for(int i=1;i<=n;i++){
        cin>>type_num;
        if(type_num>70){
            ans+=float(int(type_num/70))*0.1+0.1;
        }else ans+=0.1;
    }
    cout<<ans;
    return 0;
}