#include <bits/stdc++.h>
#define rep(i,n) for(int i = 0; i < (n); i++)
using namespace std;
typedef long long ll;

int main(){
    cin.tie(0);
    ios::sync_with_stdio(0);
    
    auto [AU, AL] = []() {
        int n; cin >> n;
        ll AU; cin >> AU;
        ll AL = 1;
        rep(i,n-1) {
            ll x; cin >> x;
            AL *= x;
        }
        return make_pair(AU, AL);
    }();

    auto [BU, BL] = []() {
        int n; cin >> n;
        vector<ll> B(n);
        rep(i,n) cin >> B[i];
        if(n == 1) return make_pair(B[0], 1LL);
        ll BU = B[n - 2], BL = B[n - 1];
        for(int i = n - 3; i >= 0; i--) {
            swap(BU, BL);
            BU *= B[i];
        }
        return make_pair(BU, BL);
    }();


    ll CU = AU * BL, CL = AL * BU;
    ll G = gcd(CU, CL);
    CU /= G, CL /= G;
    if((abs(CU) / CU) * (abs(CL) / CL) == -1) {
        CU = -abs(CU);
        CL = +abs(CL);
    }
    cout << CU << " " << CL << endl;
}