#include <iostream>
#include<cstdio>
#include<algorithm>
using namespace std;
int main(void)
{
    int N,D,X,i;
    cin>>N>>D>>X;
    int ans=X;
    for(int i=0;i<N;i++)
    {
int A[N];
        cin>>A[N];
        ans=ans+(D-1)/A[N]+1;
    }
    cout<<ans<<endl;
}
