#include <iostream>
#include <string>

using namespace std;

int gcf(int a, int b) {
    if (b == 0) { return a; }
    return gcf(b, a % b);
}

int main(void) {
    int A[20], B[20];
    int n1, n2;
    cin >> n1;
    for (int i = 0; i < n1; ++i) {
        cin >> A[i];
    }
    cin >> n2;
    for (int i = 0; i < n2; i++) {
        cin >> B[i];
    }

    int f1 = A[0];
    int f2 = B[0];

    int sum1 = 1, sum2 = 1;

    for (int i = 1; i < n1; ++i) {
        sum1 *= A[i];
    }
    for (int i = 1; i < n2; ++i) {
        sum2 *= B[i];
    }

    int deno = sum1 * f2;
    int nume = sum2 * f1;

    int g = gcf(deno, nume);

    nume = (deno < 0) ? -nume : nume;
    deno = (deno < 0) ? -deno : deno;
    cout << nume / g << " " << deno / g << endl;
}