N1 = gets.to_i
as = gets.split.map(&:to_i)
N2 = gets.to_i
bs = gets.split.map(&:to_i)

num1 = as[0]
num2 = 1
(1...N1).each do |i|
    num2 *= as[i]
end

N2.times do |i|
    if i%2 == 0
        num2 *= bs[i]
    else
        num1 *= bs[i]
    end
end

g = num1.gcd(num2)
g *= -1 if num2 < 0
num1 /= g
num2 /= g
puts [num1, num2].join(' ')