#include <bits/stdc++.h>
using namespace std;

int main(int argc, char const *argv[])
{
	int n,d,x;
	cin>>n>>d>>x;
	int a;
	for (int i = 0; i < n; ++i)
	{
		cin>>a;
		x+=(d+a-1)/a;
	}
	cout<<x<<endl;
	return 0;
}
