#include <bits/stdc++.h>
typedef long long i64;
using std::cout;
using std::endl;
using std::cin;

int main() {
	int n; cin >> n;
	i64 A = 1, B = 1; cin >> A;
	for(int i = 1; i < n; i++) {
		i64 a; cin >> a;
		B *= a;
	}
	
	int m; cin >> m;
	i64 X = 1, Y = 1;
	std::vector<i64> vec(m);
	for(int i = 0; i < m; i++) cin >> vec[i]; reverse(begin(vec), end(vec));
	for(int i = 0; i < m; i += 2) Y *= vec[i];
	for(int i = 1; i < m; i += 2) X *= vec[i];
	if(m % 2) std::swap(X, Y);
	
	i64 latte = X * B, malta = A * Y;
	i64 G = std::__gcd(latte, malta);
	latte /= G;
	malta /= G;
	if(latte < 0) {
		latte *= -1;
		malta *= -1;
	}
	
	cout << malta << " " << latte << endl;
	return 0;
}