#include <iostream>
using ll = long long;
using namespace std;

pair<ll, ll> func(ll a, ll b, ll c) {
	if (b == 0) {
		return { c / a,0 };
	}
	else {
		pair<ll, ll>tmp;
		tmp = func(b, a % b, c);
		return{ tmp.second,tmp.first - (a / b) * tmp.second };
	}
}

int main() {
	ll N;
	cin >> N;
	ll P, Q, R;
	cin >> P >> Q >> R;
	ll A, B, C;
	cin >> A >> B >> C;
	pair<ll, ll> tmp;
	tmp = func(P, Q, 1);
	ll good0 = ((__int128_t)A * (__int128_t)Q * (__int128_t)tmp.second + (__int128_t)B * (__int128_t)P * (__int128_t)tmp.first) % (__int128_t)(P * Q);
	tmp = func(P * Q, R, 1);
	ll good = ((__int128_t)good0 * R * (__int128_t)tmp.second + (__int128_t)C * (__int128_t)P * (__int128_t)Q * (__int128_t)tmp.first) % (__int128_t)(P * Q * R);
	if(N % (P * Q * R) < good){
	  cout << N / (P * Q * R);
	}
	else{
	  cout << N / (P * Q * R) + 1;
	}
	return 0;
}