#include <iostream>
using namespace std;

int main()
{
    int num;
    int molecule = 1;
    int denominator = 1;
    
    cin >> num; // 分子の数を読み込む
    int i,tmp;
    for (i = 0; i < num; i++)
    {
        cin >> tmp;
        if (i % 2 == 0)
        {
            molecule *= tmp;
        }else{
            denominator *= tmp;
        }
    }
    
    cin >> num; // 分母の数を読み込む
    for (i = 0; i < num; i++)
    {
        cin >> tmp;
        if(i % 2 == 0)
        {
            denominator *= tmp;
        }else{
            molecule *= tmp;
        }
    }
    
    // 大きい方の値を求める
    int bigNum;
    if (molecule > denominator)
    {
        bigNum = molecule;
    }else{
        bigNum = denominator;
    }
    
    // 既約分数を求める
    for (i = 1; i < bigNum; i++)
    {
        if (denominator % i == 0 && molecule % i == 0)
        {
            denominator /= i;
            molecule /= i;
        }
    }

    cout << molecule << " " << denominator << endl;
    
    return 0;
}