#include <bits/stdc++.h>
// #include <atcoder/all>
using namespace std;
// using namespace atcoder;
typedef long long ll;
#define rep(i, n) for(ll i = 0, i##_len = (n); i < i##_len; i++)
#define reps(i, s, n) for(ll i = (s), i##_len = (n); i < i##_len; i++)
#define rrep(i, n) for(ll i = (n) - 1; i >= 0; i--)
#define rreps(i, e, n) for(ll i = (n) - 1; i >= (e); i--)
#define all(x) (x).begin(), (x).end()
#define rall(x) (x).rbegin(), (x).rend()
#define sz(x) ((ll)(x).size())
#define len(x) ((ll)(x).length())
#define endl "\n"
template<class T> void chmax(T &a, const T b){ a = max(a, b); }
template<class T> void chmin(T &a, const T b){ a = min(a, b); }

int main() {
    cin.tie(0);
    ios::sync_with_stdio(false);
    // ifstream in("input.txt");
    // cin.rdbuf(in.rdbuf());
    ll n1;
    cin >> n1;
    vector<ll> a(n1);
    rep(i, n1) cin >> a[i];
    ll n2;
    cin >> n2;
    vector<ll> b(n2);
    rep(i, n2) cin >> b[i];
    ll bs = a[0], bb = 1;
    rep(i, n2) {
        if (i % 2 == 0) {
            bb *= b[i];
        }
        else {
            bs *= b[i];
        }
    }
    reps(i, 1, n1) {
        bb *= a[i];
    }
    ll gcd = __gcd(abs(bb), abs(bs));
    bb /= gcd;
    bs /= gcd;
    if ((bb < 0) && (bs < 0)) {
        bb *= -1;
        bs *= -1;
    }
    else if (bb < 0) {
        bb *= -1;
        bs *= -1;
    }
    printf("%lld %lld\n", bs, bb);
    return 0;
}