import java.util.*;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        long n = 0;
        long numerator = 1;
        long denominator = 1;

        n = sc.nextLong();
        numerator = sc.nextLong();
        for(long i=1;i<n;i++) {
        	denominator *= sc.nextLong();
        }

        n = sc.nextLong();
        denominator *= sc.nextLong();
        for(long i=1;i<n;i++) {
        	numerator *= sc.nextLong();
        }

        long gcf = calculateGcf(numerator, denominator);
        numerator /= gcf;
        denominator /= gcf;

        if(numerator < 0&&denominator < 0) {
        	numerator*=-1;
        	denominator*=-1;
        } else if(numerator >= 0&&denominator < 0){
        	numerator*=-1;
        	denominator*=-1;
        }

        System.out.println(numerator+" "+denominator);
    }

    static long calculateGcf(long m, long n) {
    	long s = 0;
    	while(m % n != 0) {
    		s = m;
    		m = n;
    		n = s % n;
    	}
    	return n;
    }
}