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

int main() {
    ios::sync_with_stdio(false);
    cin.tie(0);
    ll r, p, q;
    cin >> r >> p >> q;
    vector<ll> a(4);
    for(auto &&v : a) cin >> v;
    ll ok = 0, ng = accumulate(a.begin(), a.end(), 0LL) / 3 + 1;
    while(ok + 1 < ng){
        ll mid = (ok + ng) / 2;
        ll cost = mid * p;
        for(int i = 0; i < 3; i++){
            cost += max(0LL, mid - a[i]) * q;
        }
        (cost <= r ? ok : ng) = mid;
    }
    cout << ok << '\n';
}