#include <bits/stdc++.h>
#include <atcoder/all>
using namespace std;
using ll = long long;

int main(){
    ios::sync_with_stdio(false);
    cin.tie(0);
    ll n;
    cin >> n;
    vector<ll> m(3), r(3);
    for(auto &&v : m) cin >> v;
    for(auto &&v : r) cin >> v;
    auto [rem, mod] = atcoder::crt(r, m);
    if(mod == 0){
        cout << "0\n";
        return 0;
    }
    cout << max(0ll, n + mod - rem) / mod << '\n';
}