//=================================
// Created on: 2018/11/09 21:26:57
//=================================
#include <bits/stdc++.h>
int main()
{
    using ll = long long;
    int N1;
    std::cin >> N1;
    ll si = 1, bo = 1;
    for (int i = 0, a; i < N1; i++) {
        std::cin >> a;
        (i == 0 ? si : bo) *= a;
    }
    int N2;
    std::cin >> N2;
    for (int i = 0, a; i < N2; i++) {
        std::cin >> a;
        (i % 2 == 0 ? bo : si) *= a;
    }
    const ll g = std::gcd(bo, si);
    bo /= g, si /= g;
    if (bo < 0) { bo *= -1, si *= -1; }
    std::cout << si << " " << bo << std::endl;
    return 0;
}