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

print(ans.numerator, ans.denominator)