#define _USE_MATH_DEFINES
#define _CRT_SECURE_NO_WARNINGS
#include<stdio.h>
#include<string>
#include<iostream>
#include<iostream>
#include<cctype>
#include<cstdio>
#include<vector>
#include<stack>
#include<queue>
#include <algorithm>
#include<math.h>
#include<set>
#include<map>
#include <sstream>
#include<iomanip>
#include <ctype.h>
using namespace std;

//#include<bits/stdc++.h>


int main() {

	
	long long int n, m;
	long long int a = 1, b = 1;
	cin >> n;

	for (int i = 0; i < n; i++) {
		long long int x;
		cin >> x;
		if (i == 0)a *= x;
		else b *= x;
		//cout << a << " " << b << endl;
	}
	cin >> m;

	for (int i = 0; i < m; i++) {
		long long int x;
		cin >> x;
		if (i % 2 == 0)b *= x;
		else a *= x;
		//cout << a << " " << b << endl;
	}
	long long int t = a, w = b;
	if (a < 0)a *= -1;
	if (b < 0)b *= -1;
	while (1) {
		if (b > a)swap(a, b);
		if (!b)break;
		a %= b;

	}
	if (w < 0)t *= -1, w *= -1;
	cout << t/a << " " << w/a << endl;

	return 0;
}