N, M, K = gets.split.map(&:to_i)
op, *cols = gets.split
op = op.to_sym
B = cols.map(&:to_i)
A = N.times.map{ gets.to_i }

if op == :+
  Amod = Hash.new(0)
  A.each{|a| Amod[a % K] += 1}
  puts B.inject(0){|s,b| s + Amod[(-b) % K] }
else
  Agcd = Hash.new(0)
  Bgcd = Hash.new(0)
  A.each{|a| Agcd[a.gcd(K)] += 1 }
  B.each{|b| Bgcd[b.gcd(K)] += 1 }
  ans = 0

  Agcd.each do |ag, ac|
    Bgcd.each do |bg, bc|
      ans += ac * bc if (ag * bg) % K == 0
    end
  end
  puts ans
end