#include <iostream>
using namespace std;

#include <atcoder/math>

int main() {
    long long N, P, Q, R, A, B, C;
    cin >> N >> P >> Q >> R >> A >> B >> C;
    auto [rem, mod] = atcoder::crt({A, B, C}, {P, Q, R});

    long long ret = 0;
    if (rem <= N) ret = 1 + (N - rem) / mod;

    cout << ret << '\n';
}