#include "bits/stdc++.h"
using namespace std;

typedef long long ll;

ll gcd(ll a, ll b) {
	//cout << a <<" "<< b << endl;
	if (b == 0) return a;
	return gcd(b, a%b);
}

int main() {
	ll n1,n2;
	cin >> n1;
	vector<ll> A(n1);
	ll bo=1,si=1;
	for (ll i = 0; i < n1; i++) {
		cin >> A[i];
		if (i == 0) {
			si *= A[i];
		}
		else {
			bo *= A[i];
		}
	}
	cin >> n2;
	vector<ll> B(n2);
	for (ll i = 0; i < n2; i++) {
		cin >> B[i];
		if (i % 2 == 0) {
			bo *= B[i];
		}
		else {
			si *= B[i];
		}
	}

	ll n=gcd(bo,si);
	//cout << n << endl;

	if((bo/n)<0) cout << si/n*(-1) <<" "<< bo/n*(-1) << endl;
	else cout << si/n <<" "<< bo/n << endl;
}