from math import gcd
n_1=int(input())
a=list(map(int,input().split()))
n_2=int(input())
b=list(map(int,input().split()))
a_up=a_down=b_up=b_down=1
for i in range(n_1):
    if i==0:
        a_up*=a[i]
    else:
        a_down*=a[i]
for i in range(n_2):
    if i%2==0:
        b_up*=b[i]
    else:
        b_down*=b[i]
ans1=a_up*b_down
ans2=a_down*b_up
d=gcd(ans1,ans2)
if ans1<0:
    ans1,ans2=-ans1,-ans2
print(ans1,ans2)