#include using namespace std; //#include // using namespace boost::multiprecision; // using cint = cpp_int; //#define input(a) scanf("%lld", &(a)) //#define output(a) printf("%lld\n", (a)) // Define using ll = long long; using ull = unsigned long long; using ld = long double; const ll MOD = 1e9 + 7; const ll INF = LONG_MAX; const ull MAX = ULONG_MAX; #define mp make_pair #define pb push_back #define eb emplace_back #define x first #define y second #define endl '\n' #define space ' ' #define def inline auto #define func inline constexpr ll #define run __attribute__((constructor)) def _ #define all(v) begin(v), end(v) // Debug #define debug(...) \ { \ cerr << __LINE__ << ": " << #__VA_ARGS__ << " = "; \ for (auto &&X : {__VA_ARGS__}) cerr << "[" << X << "] "; \ cerr << endl; \ } // Loop #define inc(i, a, n) for (ll i = (a), _##i = (n); i <= _##i; ++i) #define dec(i, a, n) for (ll i = (a), _##i = (n); i >= _##i; --i) #define each(i, a) for (auto &&i : a) #define rep(i, n) inc(i, 0, n - 1) // Stream #define fout(n) cout << fixed << setprecision(n) #define fasten cin.tie(0), ios::sync_with_stdio(0) // Speed run() { fasten, fout(10); } #pragma GCC optimize("O3") #pragma GCC optimization_level 3 #pragma GCC target("avx") // Math func gcd(ll a, ll b) { return b ? gcd(b, a % b) : a; } func lcm(ll a, ll b) { return a * b / gcd(a, b); } def input() { ll A; cin >> A; return A; } ll N, M, A, P = 1, Q = 1; signed main() { cin >> N; rep(i, N) { cin >> A; if (i) Q *= A; else P *= A; } cin >> M; rep(i, M) { cin >> A; if (i & 1) P *= A; else Q *= A; } if (Q < 0) { P *= -1, Q *= -1; } debug(P, Q) cout << P / gcd(P, Q) << space << Q / gcd(P, Q) << endl; } // for compilation: g++ -Ofast -march=native -o _ _.cpp -std=c++17