import java.util.*;

public class Main {
   public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int n1 = sc.nextInt();
        long child = sc.nextInt();
        long mother = 1;
        for (int i = 1; i < n1; i++) {
            mother *= sc.nextInt();
        }
        int n2 = sc.nextInt();
        mother *= sc.nextInt();
        for (int i = 1; i < n2; i++) {
            child *= sc.nextInt();
        }
        boolean isPlus = true;
        if (child < 0) {
            isPlus = false;
            child *= -1;
        }
        if (mother < 0) {
            isPlus = !isPlus;
            mother *= -1;
        }
        long d = gcd(child, mother);
        child /= d;
        mother /= d;
        if (!isPlus) {
            child *= -1;
        }
        System.out.println(child + " " + mother);
    }
    
    static long gcd(long x, long y) {
        if (x % y == 0) {
            return y;
        } else {
            return gcd(y, x % y);
        }
    }
}