#include <bits/stdc++.h>

using namespace std;

void fast_io() {
	ios::sync_with_stdio(false);
	std::cin.tie(nullptr);
}

#include <atcoder/math>
using namespace atcoder;

int main() {
	fast_io();
	long long n;
	cin >> n;
	long long p, q, r;
	cin >> p >> q >> r;
	long long a, b, c;
	cin >> a >> b >> c;
	auto [y, z] = crt({a, b, c}, {p, q, r});
	cout << n / z + (n % z >= y ? 1 : 0) << endl;
}