#include <bits/stdc++.h>

using namespace std;
typedef long long ll;
#define REP(i,n) for(int i=0; i<int(n); i++)
#define FOR(i,m,n) for(int i=int(m); i<int(n); i++)
#define ALL(obj) (obj).begin(),(obj).end()
#define VI vector<int>
#define VLL vector<long long>
#define VVI vector<vector<int>>
#define VVLL vector<vector<long long>>
#define VC vector<char>
#define VS vector<string>
#define VVC vector<vector<char>>
#define fore(i,a) for(auto &i:a)

typedef pair <int, int> P;
template<class T> bool chmax(T &a, T b) { if (a < b) { a = b; return true; } return false; }
template<class T> bool chmin(T &a, T b) { if (a > b) { a = b; return true; } return false; }
const int  INF = 2147483647;
const ll INFL = 9223372036854775807;
const ll mod = 1000000007;

ll gcd(ll x, ll y) {
	if (y == 0) return x;
	return gcd(y, x%y);
}



int main() {

	ll a, b;
	a = b = 1;
	int n1, n2;
	cin >> n1;
	REP(i, n1) {
		ll ai;
		cin >> ai;
		if (i==0)a *= ai;
		else b *= ai;
	}
	cin >> n2;
	REP(i, n2) {
		ll ai;
		cin >> ai;
		if (i%2)a *= ai;
		else b *= ai;
	}
	int n = gcd(a, b);
	a /= n;
	b /= n;

	if (a < 0 && b < 0) {
		a = -a;
		b = -b;
	}
	if (b < 0) {
		a = -a;
		b = -b;
	}

	cout << a << ' ' << b << endl;




	return 0;


}