n=int(input())
a=[int(e) for e in input().split(" ")]
m=int(input())
b=[int(e) for e in input().split(" ")]
mol=a[0]
for i in range(int(m*0.5)):
	mol*=b[2*i+1]
den=1
for i in range(int(n)-1):
	den*=a[i+1]
for i in range(int((m+1)*0.5)):
	den*=b[2*i]
from fractions import Fraction 
f=Fraction(mol,den)
print(f.numerator,f.denominator)