import java.io.InputStream;
import java.io.PrintWriter;
import java.lang.reflect.Array;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.HashMap;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
import java.util.PriorityQueue;
import java.util.Scanner;
import java.util.Set;
import java.util.Stack;
import java.util.TreeMap;
import java.util.TreeSet;

import static java.util.Comparator.*;

public class Main {
    public static void main(String[] args) {
        PrintWriter out = new PrintWriter(System.out);
        Solver solver = new Solver(System.in, out);
        solver.solve();
        out.close();
    }
}
class Solver {
	Scanner sc;
	PrintWriter out;
    public Solver(InputStream in, PrintWriter out) {
    	sc = new Scanner(in);
    	this.out = out;
    }
    // ==================================================================
    public void solve() {
    	int N1 = Integer.parseInt(sc.next());
    	int[] A = new int[N1];
    	for (int i = 0; i < N1; i++) {
        	A[i] = Integer.parseInt(sc.next());
		}
    	int N2 = Integer.parseInt(sc.next());
    	int[] B = new int[N2];
    	for (int i = 0; i < N2; i++) {
        	B[i] = Integer.parseInt(sc.next());
		}
    	long A1 = A[0];
    	for (int i = 1; i < N2; i++) {
			A1 *= (long)B[i];
		}
    	long B1 = B[0];
    	for (int i = 1; i < N1; i++) {
			B1 *= (long)A[i];
		}
//    	out.println("A1 = " + A1 + "  B1 = " + B1);
    	long AX = Math.abs(A1);
    	long BX = Math.abs(B1);
    	for (long i = 2; i <= Math.max(AX, BX); i++) {
    		while(true) {
    			if(AX % i == 0 && BX % i == 0) {
    				AX /= i;	BX /= i;
//    				out.println(" " + i + " で割った　　AX = " + AX + "  BX = " + BX);
    			} else break;
    		}
    		if(AX < i || BX < i)	break;
		}
    	if((A1 > 0 && B1 > 0) || (A1 < 0 && B1 < 0)) {
    		out.println(AX + " " + BX);
    	} else {
    		out.println(-AX + " " + BX);
    	}
    }
}