#include <bits/stdc++.h>
using namespace std;
#ifdef LOCAL
  #include "settings/debug.cpp"
#else
  #define Debug(...) void(0)
#endif
#define rep(i, n) for (int i = 0; i < (n); ++i)
using ll = long long;
using ull = unsigned long long;

int main() {
  cin.tie(nullptr)->sync_with_stdio(false);
  int n;
  cin >> n;
  vector<int> a(n);
  rep(i, n) cin >> a[i];
  int m;
  cin >> m;
  vector<int> b(m);
  rep(i, m) cin >> b[i];
  ll x = a[0], y = b[0];
  rep(i, m - 1) x *= b[i + 1];
  rep(i, n - 1) y *= a[i + 1];
  ll g = gcd(abs(x), abs(y));
  x /= g, y /= g;
  if (y < 0) x = -x, y = -y;
  cout << x << ' ' << y << '\n';
  return 0;
}