#include<iostream> #include<string> #include<fstream> #include<iomanip> #include<vector> #include<cctype> #include<algorithm> #include<sstream> using namespace std; int main() { int n; double a, sum = 0, ans = 0; vector<double>v; cin >> n; for (int i = 0; i < n; i++) { cin >> a; v.push_back(a); sum += a; } sum /= 10; for (int i = 0; i < n; i++)if (v[i] <= sum)ans += 30; cout << ans << endl; return 0; }