#include <stdio.h>
#include <atcoder/all>
#include <bits/stdc++.h>
using namespace std;
using namespace atcoder;
using mint = modint998244353;
#define rep(i,n) for (int i = 0; i < (n); ++i)
#define Inf32 1000000005
#define Inf64 4000000000000000001LL
int main(){
	
	long long n;
	cin>>n;
	
	vector<long long> r(3),m(3);
	rep(i,3)cin>>m[i];
	rep(i,3)cin>>r[i];
	auto res = crt(r,m);
	long long ans = n / res.second;
	n %= res.second;
	if (n >= res.first)ans++;
	cout<<ans<<endl;
	return 0;
}