#include<bits/stdc++.h>
using namespace std;
using ll = long long;

#define FOR(i,a,b) for(ll i=(a);i<(b);++i)
#define ALL(v) (v).begin(), (v).end()
#define p(s) cout<<(s)<<endl
#define p2(s, t) cout << (s) << " " << (t) << endl
#define br() p("")
#define pn(s) cout << (#s) << " " << (s) << endl
#define p_yes() p("Yes")
#define p_no() p("No")

ll gcd(ll a,ll b){
    if(b == 0) return a;
    return gcd(b,a%b);
}

int main(){
    cin.tie(0);
    ios::sync_with_stdio(false);

    // input
    ll N1;
    cin >> N1;

    ll child = 1;
    ll mother = 1;

    FOR(i, 0, N1){
        ll a;
        cin >> a;
        if(i==0){
            child *= a;
        }else{
            mother *= a;
        }
    }

    ll N2;
    cin >> N2;
    FOR(i, 0, N2){
        ll b;
        cin >> b;
        if(i%2==1){
            child *= b;
        }else{
            mother *= b;
        }
    }

    bool is_minus = false;
    if(child * mother < 0){
        is_minus = true;
    }
    child = abs(child);
    mother = abs(mother);

    ll g = gcd(child, mother);
    child /= g;
    mother /= g;

    if(is_minus){
        cout << '-';
    }

    cout << child << ' ' << mother << endl;
    
    return 0;
}