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

int main(void) {
    ll n,tmp,x,y,flg;
    ll dmax = 0;
    ll ans = 0;
    cin >> n;
    for (int i=0; i<n; i++) {
        cin >> tmp;
        if (dmax < tmp) dmax = tmp;
    }
    cin >> x >> y;
    tmp = max(x,y);
    ans += (tmp / (dmax * 2)) * 2;
    flg  = tmp % (dmax * 2);
    if (flg == 0) ans = ans;
    else if (flg <= dmax) ans++;
    else ans += 2;
    cout << ans << endl;
    return 0;
}