#include <iostream>
using namespace std;
template <typename T>
T gcd(T a,T b){
  if(a%b==0)return b;
  else return gcd(b,a%b);
}
int main(){
    long long S = 1;
    long long B = 1;
    int a;cin>>a;
    for(int i = 0; a > i; i++){
        long long t;cin>>t;
        if(i){
            B *= t;
        }else{
            S *= t;
        }
    }
    cin>>a;
    for(int i = 0; a > i; i++){
        long long t;cin>>t;
        if(i%2){
            S *= t;
        }else{
            B *= t;
        }
    }
    if(((S/gcd(S,B) < 0) + (B/gcd(S,B) < 0)) % 2){
        cout << "-" << abs(S/gcd(S,B)) << " " << abs(B/gcd(S,B)) << endl;
    }else{
        cout << abs(S/gcd(S,B)) << " " << abs(B/gcd(S,B)) << endl;
    }
}