N, M, K = gets.split.map(&:to_i)
op, *B = gets.split
B.map!(&:to_i)
A = [] * N
N.times do
  A << gets.chomp.to_i
end
z = 0

if op == '+'
	d = Hash.new(0)
	B.each do |b|
		d[b % K] += 1
  end
	A.each do |a|
		if d[a]
			z += d[-a % K]
		end
	end
else
	da = {}
	db = {}
	B.each do |b|
		g=b.gcd(K)
		if db[g]
			db[g] += 1
		else
			db[g] = 1
		end
	end
	A.each do |a|
		g = a.gcd(K)
		if da[g]
			da[g] += 1
		else
			da[g] = 1
		end
	end
	da.each do |ka,va|
		db.each do |kb,vb|
			if ka * kb % K == 0
				z += va * vb
			end
		end
	end
end
p z