#include <bits/stdc++.h>

using namespace std;

#define REP(i,n) for(int i=0; i<(int)(n); i++)

long long gcd(long long a, long long b) {
  if (b == 0)
    return a;
  return gcd(b, a%b);    
}

// override function template of std::gcd
long long gcd(int a, int b) {
  return gcd((long long)a, (long long)b);
}

int main() {
  ios_base::sync_with_stdio(0);
  cin.tie(0);

  int n1;
  cin >> n1;
  vector<long long> a(n1);
  REP (i, n1) cin >> a[i];

  int n2;
  cin >> n2;
  vector<long long> b(n2);
  REP (i, n2) cin >> b[i];

  long long p = a[0], q = 1;

  for (int i = 1; i < n1; i++) q *= a[i];
  for (int i = 0; i < n2; i++) {
    if (i % 2 == 0)
      q *= b[i];
    else
      p *= b[i];
  }

  long long g = gcd(abs(p), abs(q));
  p /= g;
  q /= g;

  p *= q / abs(q);
  q = abs(q);
    
  cout << p << " " << q << endl;
  
  return 0;
}