n_1=int(input())
A=list(map(int,input().split()))
n_2=int(input())
B=list(map(int,input().split()))
minus=0
import math
upA,upB=A[0],B[0]
if upA<0:
    minus+=1
    upA=abs(upA)
if upB<0:
    minus+=1
    upB=abs(upB)
downA,downB=A[1:],B[1:]
def A(l): 
    global minus  
    tmp=1
    for i in l:
        if i<0:
            i=abs(i)
            minus+=1
        tmp*=i
    return tmp
downA=A(downA)
downB=A(downB)
gcd_all=downA*downB//math.gcd(downA,downB)
downA=gcd_all//downA
downB=gcd_all//downB
upA*=downA;upB*=downB
print(upA//math.gcd(upA,upB)*-1 if minus%2==1 else 1,upB//math.gcd(upA,upB))