n, m, k = gets.chomp.split.map(&:to_i)

b = gets.chomp.split
op = b.shift
b.map!(&:to_i)
a = [] * n
h = Hash.new(0)
b.each do |bi|
  h[bi % k] += 1
end
n.times do
  a << gets.chomp.to_i % k
end

if op == '+'
  ans = 0
  a.each do |ai|
    ans += h[k - ai]
  end
  puts ans
  exit
end

ha = Hash.new(0)
hb = Hash.new(0)
a.each do |ai|
  ha[ai.gcd(k)] += 1
end
b.each do |bi|
  hb[bi.gcd(k)] += 1
end

ans = 0
ha.keys.each do |ka|
  hb.keys.each do |kb|
    if ka * kb % k == 0
      ans += ha[ka] * hb[kb]
    end
  end
end
puts ans