#define _USE_MATH_DEFINES
#include <bits/stdc++.h>
using namespace std;
#define int long long
int gcd(int x, int y) {
  return x ? gcd(y % x, x) : y;
}
signed main() {
  ios::sync_with_stdio(false); cin.tie(0);
  int n;
  cin >> n;
  int num = 1, den = 1;
  for (int i = 0; i < n; i++) {
    int x;
    cin >> x;
    if (i == 0) num *= x;
    else den *= x;
  }
  int m;
  cin >> m;
  for (int i = 0; i < m; i++) {
    int x;
    cin >> x;
    if (i % 2 == 0) den *= x;
    else num *= x;
  }
  int a = num / gcd(num, den);
  int b = den / gcd(num, den);
  if (b < 0) {
    b *= -1;
    a *= -1;
  }
  cout << a << " " << b << endl;
  return 0;
}