#include<bits/stdc++.h>
using namespace std;
#define ll long long
#define FOR(i,n,m) for(int i=(n);i<(m);i++)
#define REP(i,n) FOR(i,0,n)
#define REPR(i,n) for(int i=(n);i>=0;i--)
#define all(vec) vec.begin(),vec.end()
using vi=vector<int>;
using vvi=vector<vi>;
using vl=vector<ll>;
using vvl=vector<vl>;
using P=pair<int,int>;
using PP=pair<int,P>;
using Pl=pair<ll,ll>;
using PPl=pair<ll,Pl>;
using vs=vector<string>;
#define fi first
#define se second
#define pb push_back
template<class T>bool chmax(T &a,const T &b){if(a<b){a=b;return true;}return false;}
template<class T>bool chmin(T &a,const T &b){if(a>b){a=b;return true;}return false;}
const ll MOD=1000000007LL;
const int INF=1<<30;
const ll LINF=1LL<<60;
ll gcd(ll a,ll b){
    return b==0?a:gcd(b,a%b);
}
ll lcm(ll a,ll b){
    return a/gcd(a,b)*b;
}

ll extgcd(ll a,ll b,ll &x,ll &y){
    if(!b){
        x=1;y=0;
        return a;
    }
    ll d=extgcd(b,a%b,y,x);
    y-=a/b*x;
    return d;
}
struct Bunsu{
    ll x,y;
    Bunsu():x(0),y(1){}
    Bunsu(ll x,ll y):x(x),y(y){
        yakubun();
    }
    bool operator<(Bunsu a){
        return 1.0*x/y<1.0*a.x/a.y;
    }
    void yakubun(){
        ll g=gcd(x,y);
        x/=g;
        y/=g;
        if(y<0){
            x*=-1;y*=-1;
        }
    }
    Bunsu operator*=(ll t){
        x*=t;
        yakubun();
        return *this;
    }
    Bunsu operator/=(ll t){
        y*=t;
        yakubun();
        return *this;
    }
    Bunsu operator/=(Bunsu a){
        x*=a.y;
        y*=a.x;
        yakubun();
        return *this;
    }
};
int main(){
    int n;
    cin>>n;
    Bunsu ans(1,1);
    REP(i,n){
        int x;
        cin>>x;
        if(i){
            ans/=x;
        }else{
            ans*=x;
        }
    }
    int m;
    cin>>m;
    REP(i,m){
        int x;
        cin>>x;
        if(i){
            ans*=x;
        }else{
            ans/=x;
        }
    }
    cout<<ans.x<<" "<<ans.y<<endl;
    return 0;
}