#include <bits/stdc++.h>
#define rep(i, n) for (int i = 0; i < (n); i++)
#define rrep(i, n) for (int i = (n) - 1; i >= 0; i--)
#define reps(i, n) for (int i = 1; i <= (n); i++)
#define all(a) (a).begin(), (a).end()
#define bit(b) (1ull << (b))

using namespace std;
using i32 = int;
using u32 = unsigned int;
using i64 = long long;
using u64 = unsigned long long;
using f64 = double;
using vi32 = vector<i32>;
using vu32 = vector<u32>;
using vi64 = vector<i64>;
using vu64 = vector<u64>;
using vf64 = vector<f64>;
using vstr = vector<string>;
using vvi32 = vector<vi32>;
using vvu32 = vector<vu32>;
using vvi64 = vector<vi64>;
using vvu64 = vector<vu64>;
using vvf64 = vector<vf64>;

template<typename T, typename S> bool amax(T &x, S y) { if (x < y) { x = y; return 1; } return 0; }
template<typename T, typename S> bool amin(T &x, S y) { if (y < x) { x = y; return 1; } return 0; }

int main() {
  ios::sync_with_stdio(false);
  cin.tie(0);
  cout << fixed << setprecision(16);
  int na, nb;
  cin >> na;
  vi64 a(na);
  rep(i, na) cin >> a[i];
  cin >> nb;
  vi64 b(nb);
  rep(i, nb) cin >> b[i];
  reps(i, nb - 1) a[0] *= b[i];
  reps(i, na - 1) b[0] *= a[i];
  i64 c = __gcd(a[0], b[0]);
  a[0] /= c;
  b[0] /= c;
  if (b[0] / abs(b[0]) == -1) {
    a[0] *= -1;
    b[0] *= -1;
  }
  cout << a[0] << " " << b[0] << endl;
  return 0;
}