#include <bits/stdc++.h>
using namespace std;
using i64 = int64_t;
using vi = vector<i64>;
using vvi = vector<vi>;

int main() {
    i64 a = 1, b = 1;
    int n;
    cin >> n;
    for (int i = 0; i < n; i++) {
        int c;
        cin >> c;
        if (i == 0) {
            a = c;
        } else {
            b *= c;
        }
    }

    i64 g = __gcd(a, b);
    a /= g, b /= g;
    cin >> n;
    for (int i = 0; i < n; i++) {
        int c;
        cin >> c;
        if (i % 2 == 0) {
            b *= c;
        } else {
            a *= c;
        }
        i64 g = __gcd(a, b);
        a /= g, b /= g;
    }
    if (b < 0) {
        b = -b;
        a = -a;
    }
    cout << a << " " << b << endl;
}