#include <bits/stdc++.h>
using namespace std;
#define rep(i, n) for (ll i = 0; i < (ll)(n); i++)
#define all(x) (x).begin(), (x).end()
using ll = long long;
const ll MOD = 998244353;
#include<atcoder/all>
using namespace atcoder;
using mint = modint998244353;

int main() {
  ios::sync_with_stdio(false);
  cin.tie(nullptr);
  ll n,p,q,r,a,b,c;cin>>n>>p>>q>>r>>a>>b>>c;
  if(p<q){
    swap(p,q);
    swap(a,b);
  }
  ll cnt=0;
  while((p*cnt+a-b)%q!=0)cnt++;
  ll pp=lcm(p,q),aa=(p*cnt+a);
  if(pp<r){
    swap(pp,r);
    swap(aa,c);
  }
  cnt=0;
    while((pp*cnt+aa-c)%r!=0)cnt++;
    ll rr=lcm(pp,r),cc=(pp*cnt+aa);
    cout<<max(0LL,(n-cc)/rr)+1<<endl;
}