local n1 = io.read("*n")
local numer, denom = 1, 1
numer = io.read("*n")
for i = 2, n1 do denom = denom * io.read("*n") end
local n2 = io.read("*n")
denom = denom * io.read("*n")
for i = 2, n2 do
  if(i % 2 == 0) then
    numer = numer * io.read("*n")
  else
    denom = denom * io.read("*n")
  end
end

local minus = false
if(numer * denom < 0) then minus = true end
numer, denom = math.abs(numer), math.abs(denom)
function getgcd(a, b)
  while(0 < a and 0 < b) do
    if(a < b) then b = b % a else a = a % b end
  end
  return math.max(a, b)
end

local gcd = getgcd(numer, denom)
if(minus) then io.write("-") end
io.write(numer / gcd .. " " .. denom / gcd .. "\n")