import math
N1 = int(input())
lsA = list(map(int,input().split()))
N2 = int(input())
lsB = list(map(int,input().split()))
lsc = lsA[0]
lsp = 1
for i in range(1,N1):
    lsp *= lsA[i]
for i in range(N2):
    if i % 2 == 0:
        lsp *= lsB[i]
    else:
        lsc *= lsB[i]
gcd = math.gcd(lsc, lsp)
if lsc*lsp < 0:
    print(-abs(lsc//gcd),abs(lsp//gcd))
elif lsc < 0 and lsp < 0:
    print(abs(lsc//gcd),abs(lsp//gcd))
else:
    print(lsc//gcd,lsp//gcd)