from collections import defaultdict
import math

n, m, k = map(int, input().split())
op, *b = list(input().split())

cnt = defaultdict(int)
ans = 0
if op == "+":
  for x in b:
    cnt[int(x) % k] += 1

  for _ in range(n):
    ai = int(input())
    ans += cnt[(- ai) % k]
elif op == "*":
  for x in b:
    x = int(x)
    for d in range(1, int(math.sqrt(x)) + 1):
      if x % d == 0:
        if d != x // d:
          cnt[x // d] += 1
        cnt[d] += 1

  for _ in range(n):
    ai = int(input())
    x = k // math.gcd(ai, k)
    ans += cnt[x]

print(ans)