#include <iostream>

using namespace std;

int gcd(int x,int y){
    return ((abs(y)==0) ? abs(x) :gcd(y,x%y)); 
}

int main(){
    int n1,n2;
    long A;
    cin >> n1 >> A;
    int a[n1-1];
    for(int i=0;i<n1-1;i++){
        cin >> a[i];
    }
    long B;
    cin >> n2>>B;
    int b;
    
    for(int i=0;i<n2-1;i++){
        cin >> b;
        if(i%2==0){
            A=A*b;
            //cout << "A=" << A <<endl;            
        }else{
            B=B*b;
            //cout<<"B="<<B<<endl;
        }
    }
    for(int i=0;i<n1-1;i++){
        B=B*a[i];
        //cout << "B="<<B<<endl;
    }
    if(B<0){
        A=-1*A;
        B=-1*B;
    }
    int p=gcd(B,A);
    //cout<<"p="<<p<<endl;
    //cout << A<<"\n"<<B<<endl;
    cout<< A/p<<" "<<B/p<<endl;
    return 0;
}