#include "bits/stdc++.h"
using namespace std;
#define int long long
#define endl '\n'
int mod=1e9+7;
int mod2=998244353;
const int INF=1e9;

signed main(){
	int n,a,b,c,d,e;
	cin>>n>>a>>b>>c>>d>>e;
	int tmp=min({a,b,c,d,e});
	int x=n/tmp;
	if(n%tmp!=0)x++;
	cout<<x+4<<endl;
}

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