n=int(input())
A=list(map(int,input().split()))
m=int(input())
B=list(map(int,input().split()))

UP=A[0]
DOWN=B[0]
for i in range(1,n):
    DOWN*=A[i]
for i in range(1,m):
    if i%2==1:
        UP*=B[i]
    else:
        DOWN*=B[i]

def gcd(a, b):
    
	while b:
		a, b = b, a % b
	return a

x=gcd(UP,DOWN)
y,z=UP//x,DOWN//x
if z<0:
    y=-y
    z=-z

print(y,z)