#include <stdio.h>
#include <atcoder/all>
#include <bits/stdc++.h>
using namespace std;
using namespace atcoder;
using mint = modint998244353;
#define rep(i,n) for (int i = 0; i < (n); ++i)
#define Inf 1000000000



int main() {
    
	long long a = 1,b = 1;
	int n;
	cin>>n;
	
	rep(i,n){
		int x;
		cin>>x;
		if(i==0)a *= x;
		else b *= x;
	}
	cin>>n;
	rep(i,n){
		int x;
		cin>>x;
		if(i==0)b *= x;
		else a *= x;
	}
	
	long long g = gcd(abs(a),abs(b));
	a/=g;
	b/=g;
	
	if(a<0&&b<0)a*=-1,b*=-1;
	if(a>0&&b<0)a*=-1,b*=-1;
	
	cout<<a<<' '<<b<<endl;
	
    return 0;
}