n, m, k = gets.chomp.split.map!(&:to_i)
op, *b = gets.chomp.split
b.map!(&:to_i)

a = [] * n
n.times do
  a << gets.chomp.to_i % k
end

z = 0
if op == '+'
  h = Hash.new(0)
  b.each do |bi|
    h[bi % k] += 1
  end
  a.each do |ai|
    z += h[k - ai]
  end
else
  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

  ha.map{|ka, va|
    hb.map{|kb, vb|
      if ka * kb % k == 0
        z += va * vb
      end
    }
  }
end
puts z