#include "bits/stdc++.h"
using namespace std;
#define ll long long int
#define rep(i,n) for( int i = 0; i < n; i++ )
#define rrep(i,n) for( int i = n; i >= 0; i-- )
#define REP(i,s,t) for( int i = s; i <= t; i++ )
#define RREP(i,s,t) for( int i = s; i >= t; i-- )
#define dump(x)  cerr << #x << " = " << (x) << endl;
#define INF 2000000000
#define mod 1000000007
#define INF2 1000000000000000000
#define int long long

signed main(void)
{
    cin.tie(0);
    ios::sync_with_stdio(false);
    int n1; cin >> n1;
    int A[10]; 
    rep(i, n1) cin >> A[i];
    int n2; cin >> n2;
    int B[10];
    rep(i, n2) cin >> B[i];
    int up = 1;
    int down = 1;
    up *= A[0];
    for(int i = 1; i < n1; i++) down *= A[i];
    for(int i = 1; i < n2; i += 2) up *= B[i];
    for(int i = 0; i < n2; i += 2) down *= B[i];
    REP(i, 2, 1000000) {
        while (up % i == 0 && down % i == 0) {
            up /= i;
            down /= i;
        }
    }
    if (down < 0) {
        down *= -1;
        up *= -1;
    }
    cout << up << " " << down << endl;

    return 0;
}