#include <iostream>
using namespace std;

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