#include <iostream>
#include <algorithm>
#include <vector>

using namespace std;

long long gcd(long long x, long long y) {
  x = abs(x);
  y = abs(y);
  while (y != 0) {
    long long r = x % y;
    x = y;
    y = r;
  }
  return x;
}

int main() {
  int n, m;
  cin >> n;
  vector<long long> a(n);
  for (int i = 0; i < n; i++) {
    cin >> a[i];
  }
  cin >> m;
  vector<long long> b(m);
  for (int i = 0; i < m; i++) {
    cin >> b[i];
  }
  long long a0 = a[0];
  long long a1 = 1;
  for (int i = 1; i < n; i++) {
    a1 *= a[i];
  }
  for (int i = 0; i < m; i++) {
    if (i % 2 == 0) {
      a1 *= b[i];
    } else {
      a0 *= b[i];
    }
  }
  long long g = gcd(a0, a1);
  a0 /= g;
  a1 /= g;
  if (a1 < 0) {
    a0 *= -1;
    a1 *= -1;
  }
  cout << a0 << ' ' << a1 << endl;
  return 0;
}