#include<bits/stdc++.h>
#define ll long long
#define pii pair<int,int>
#define lowbit(x) (x&-x)
#define inf 2000000000
#define log(x) (31^__builtin_clz(x))
using namespace std;
ll a[200005];
const ll qp18=1e18;
void solve(){
	int n;
	cin>>n;
	ll ans=0;
	for(int i=1;i<=n;i++){
		cin>>a[i];
	}
	sort(a+1,a+n+1);
	int nxt=1;
	for(int i=1;i<n;){
		nxt=i+1;
		while(nxt<n&&a[nxt]/a[i]==a[nxt+1]/a[i])nxt++;
		ans+=a[nxt]/a[i];
		i=nxt;
	}
	cout<<ans<<"\n";
}
int main(){
    ios::sync_with_stdio(0), cin.tie(0);
    int t=1;
	//cin>>t;
    while(t--)solve();
    return 0;
}