import java.util.*;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int n1 = 0;
        int a1 = 1;
        int a2 = 1;

        int n2 = 0;
        int b1 = 1;
        int b2 = 1;

        n1 = sc.nextInt();
        a1 = sc.nextInt();
        for(int i=1;i<n1;i++) {
        	a2 *= sc.nextInt();
        }

        n2 = sc.nextInt();
        b1 = sc.nextInt();
        for(int i=1;i<n2;i++) {
        	b2 *= sc.nextInt();
        }

        a1 *= b2;
        a2 *= b1;

        int gcf = calculateGcf(a1, a2);
        a1 /= gcf;
        a2 /= gcf;

        System.out.println(a1+" "+a2);
        
    }
    static int calculateGcf(int m, int n) {
    	int s = 0;
    	while(m % n != 0) {
    		s = m;
    		m = n;
    		n = s % n;
    	}

    	return n;
    }
}