from fractions import Fraction as fra

na=int(input())
la=list(map(int,input().split()))
nb=int(input())
lb=list(map(int,input().split()))

if na == 1:
    a=fra(la[0],1)
else:
    a=fra(la[0],la[1])
    for i in range(2,na):
        a=a*fra(1,la[i])
if nb == 1:
    b=fra(lb[0],1)
else:
    b=fra(1,1)
    for i in range(nb):
        if i% 2 == 0:
            b=b*fra(lb[i],1)
        else:
            b=b/fra(lb[i],1)
ans=a/b

print(ans.numerator, ans.denominator)