#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef double D;
typedef pair<ll,ll> P;
#define M 1000000007
#define F first
#define S second
#define PB push_back
#define INF 100000000000000000
int gcd(int a,int b){
    if(a<b)swap(a,b);
    if(a%b==0)return b;
    return gcd(b,a%b);
}
int n,x=1,y=1,a;
int main(void){
    cin>>n>>a;
    x*=a;
    for(int i=1;i<n;i++){
        cin>>a;
        y*=a;
    }
    cin>>n;
    cin>>a;
    y*=a;
    for(int i=1;i<n;i++){
        cin>>a;
        x*=a;
    }
    int g=gcd(x,y);
    x/=g;
    y/=g;
     if(y<0){
        y*=-1;
        x*=-1;
    }
    cout<<x<<' '<<y<<endl;
}