#include<iostream>
#include<algorithm>
using namespace std;

int main()
{
	int n, d, x, ans = 0;
	cin >> n >> d >> x;
	for (int i = 0, x; i < n; i++)
	{
		cin >> x;
		ans += (d - 1) / x + 1;
	}
	cout << ans + x;
}