#include <bits/stdc++.h>
#include <atcoder/math>
using namespace std;
int main() {
	std::ios_base::sync_with_stdio(false);
	std::cin.tie(nullptr);
	long long N, P, Q, R, A, B, C;
	cin >> N >> P >> Q >> R >> A >> B >> C;
	long long t = atcoder::crt({A,B,C},{P,Q,R}).first;
	if(t > N) {
		cout << 0 << "\n";
		return 0;
	}
	long long k = (N - t) / P;
	k /= Q, k /= R;
	cout << k + 1 << "\n";
}