#include<iostream>
#include<vector>
#include<algorithm>
#include<cstdio>
using namespace std;
int main(){
    int N,x,sum=0,ans=0;
    vector<int> vc;
    cin >> N;
    for(int i=0;i<N;i++){
        cin >> x;
        vc.push_back(x);
        sum+=x;
    }
    for(int i=0;i<N;i++){
        if(vc[i]*10<=sum)   ans++;
    }
    cout << ans*10;
    return 0;
}