#include <bits/stdc++.h>
#define rep(i,n) for(int i=0;i<n;i++)
using namespace std;
using ll =  long long ;
using P = pair<int,int> ;
const int INF = 1e9;
const int MOD = 1000000007;

ll gcd(ll i,ll j){
    if(j ==0) return i;
    else return gcd(j,i%j);
}

int main(){
    int n;
    cin >> n;
    vector<ll> a(n);
    rep(i,n) cin >> a[i];
    int m;
    cin >> m;
    vector<ll> b(m);
    rep(i,m) cin >> b[m-1-i];
    ll c1 = a[0],m1 = 1;
    for(int i=1;i<n;i++) m1 *= a[i];
    ll c2 = 1,m2 = 1;
    if(m ==1){
        c2 = b[0];
    }else{
        c2 = b[1],m2 = b[0];
        for(int i=2;i<m;i++){
            m2 *= b[i];
            swap(m2,c2);
        }
    }
    c1 *= m2;
    m1 *= c2;
    ll g = gcd(c1,m1);
    c1 /= g;
    m1 /= g;
    if(c1 < 0 && m1 < 0) c1 *= -1,m1 *= -1;
    else if(c1 > 0 && m1 < 0) c1 *= -1,m1 *= -1;
    cout << c1 << " " << m1 << endl;
    return 0;
}