#include <bits/stdc++.h>
#define rep(i,n)for(int i=0;i<(n);i++)
using namespace std;
typedef pair<int,int>P;
typedef long long ll;

int main(){
	int n;cin>>n;
	ll A;cin>>A;
	ll B=1;
	rep(i,n-1){
		int a;cin>>a;
		B*=a;
	}
	int m;cin>>m;
	ll C=1;
	ll D=1;
	rep(i,m){
		int a;cin>>a;
		if((m-i-1)%2==0)C*=a;
		else D*=a;
	}
	if(m%2==0)swap(C,D);
	ll aa=A*D,bb=B*C;
	ll g=__gcd(abs(aa),abs(bb));
	if(bb<0)g*=-1;
	cout<<aa/g<<' '<<bb/g<<endl;
}