import java.util.*;

public class Main {
  public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    int n1 = sc.nextInt();
    long[] a = new long[n1];
    for(int i = 0; i < n1; i++) {
      a[i] = sc.nextLong();
    }
    int n2 = sc.nextInt();
    long[] b = new long[n2];
    for(int i = 0; i < n2; i++) {
      b[i] = sc.nextLong();
    }
    long t1 = a[0];
    long t2 = 1;
    for(int i = 1; i < n1; i++) {
      t2 *= a[i]; 
    }
    for(int i = 0; i < n2; i++) {
      if(i % 2 == 0) {
        t2 *= b[i];        
      } else {
        t1 *= b[i];
      }
    }
    long s1 = Math.abs(t1);
    long s2 = Math.abs(t2);
    long g = gcd(s1, s2);
    long a1 = s1 / g;
    long a2 = s2 / g;
    if((t1) * (t2) > 0) {
      System.out.println(a1 + " " + a2);
    } else {
      System.out.println((-1) * a1 + " " + a2);
    }
  }

  public static long gcd(long a, long b) {
    if(b == 0) return a;
    return gcd(b, (a % b));
  }
}