#include <bits/stdc++.h>
#include <atcoder/all>
using namespace std;
using namespace atcoder;
using ll = long long;
int main () {
	ll N;
	cin >> N;
	std::vector<ll> A(3), B(3);
	for (ll& a : A) cin >> a;
	for (ll& a : B) cin >> a;
	auto [r, m] = crt(B, A);
	if (N < r) puts("0");
	else if (m) cout << (N - r) / m + 1 << endl;
	else cout << N + 1 << endl;
}