#include <atcoder/all>
#include <bits/stdc++.h>
#define rep(i, a, b) for (ll i = (ll)(a); i < (ll)(b); i++)
using namespace atcoder;
using namespace std;

typedef long long ll;

using mint = modint998244353;

int main() {
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    cout << fixed << setprecision(12);
    ll n, p, q, r, a, b, c;
    cin >> n >> p >> q >> r >> a >> b >> c;
    vector<ll> M = {p, q, r};
    vector<ll> R = {a, b, c};
    auto P = crt(R, M);
    pair<ll, ll> zero = {0, 0};
    if (P == zero) {
        cout << 0 << endl;
        return 0;
    }
    if (P.first == 0) {
        cout << n + 1 << endl;
        return 0;
    }
    ll ans = n - P.second;
    if (ans < 0) {
        cout << 0 << endl;
        return 0;
    }
    cout << ans / P.first + 1 << endl;
}