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

#include<atcoder/math>
using namespace atcoder;

void solve(){
	ll N;
	vector<ll> P(3),A(3);
	cin>>N>>P[0]>>P[1]>>P[2]>>A[0]>>A[1]>>A[2];
	auto [x,z]=crt(A,P);
	cout<<((N-x+z)/z)<<endl;

}

int main(){
    ios::sync_with_stdio(false);
    cin.tie(nullptr);


	int T=1;
	// cin>>T;
	while(T--)solve();
	
}