//#include <atcoder/all>
#include <bits/stdc++.h>
using namespace std;
//using namespace atcoder;
using ll = long long;
#define all(A) A.begin(),A.end()
using vll = vector<ll>;
#define rep(i, n) for (long long i = 0; i < (long long)(n); i++)
using Graph = vector<vector<ll>>;
Graph G;
vll dist;
vector<bool> seen;
set<pair<ll, ll>> S;

ll gcd(ll(a), ll(b)) {
	ll c = a;
	while (a % b != 0) {
		c = a % b;
		a = b;
		b = c;
	}
	return b;
}

int main() {
	ll N;
	cin>>N;
	ll P=1,Q=1;
	ll A;
	cin>>A;
	P*=A;
	rep(i,N-1){
		cin>>A;
		Q*=A;
	}
	cin>>N;
	rep(i,N){
		cin>>A;
		if(i%2==0){
			Q*=A;
		}
		else{
			P*=A;
		}
	}
	ll G=gcd(P,Q);
	P/=G;
	Q/=G;
	if(Q<0){
		P*=-1;
		Q*=-1;
	}
	cout<<P<<" "<<Q<<endl;

}