#include <iostream>
#include <algorithm>
#include <vector>
#include <string>
#include <iomanip>
#include <cmath>
#include <functional>
using namespace std;
#define diff(x,y) ((x > y) ? (x - y) : (y - x))
#define us(x) (x > 0) ? x : x * -1
#define lli long long int

int main() {
	int n, sum = 0, ans = 0;
	cin >> n;
	vector <int> coin(n);
	for (int i = 0; i < n; i++) {
		cin >> coin[i];
		sum += coin[i];
	}
	for (int i = 0; i < n; i++) {
		if (coin[i] < sum / 10)
			ans += 30;
	}
	cout << ans << endl;
	return 0;
}