#include "bits/stdc++.h" using namespace std; using ll = long long; using ld = long double; const double PI = 3.1415926535897932384626433832795; const int dx[] = { 0, 1, 0, -1 }; const int dy[] = { -1, 0, 1, 0 }; int gcd(int x, int y) { return y ? gcd(y, x % y) : x; } ll gcd(ll x, ll y) { return y ? gcd(y, x % y) : x; } int lcm(int x, int y) { return x / gcd(x, y) * y; } ll lcm(ll x, ll y) { return x / gcd(x, y) * y; } int main() { ios::sync_with_stdio(false); cin.tie(0); ll n1; cin >> n1; vector a(n1); for (auto &v : a) { cin >> v; } ll n2; cin >> n2; vector b(n2); for (auto &v : b) { cin >> v; } ll numer = a[0], denom = 1; for (int i = 1; i < n1; i++) { denom *= a[i]; } denom *= b[0]; for (int i = 1; i < n2; i++) { numer *= b[i]; } if (denom < 0) { numer *= -1; denom *= -1; } ll g = gcd(numer, denom); numer /= g; denom /= g; cout << numer << " " << denom << endl; return 0; }