from math import gcd

n, m, k = map(int, input().split())
op, *B = input().split()
B = [int(b) for b in B]
A = [int(input()) for _ in range(n)]
if op == "+":
    cnt = {}
    for b in B:
        cnt[b % k] = cnt.get(b % k, 0) + 1
    ans = 0
    for a in A:
        ans += cnt.get(-a % k, 0)
    print(ans)
else:
    div = []
    for i in range(1, int(k ** 0.5 + 1)):
        if k % i == 0:
            div.append(i)
            if i * i != k:
                div.append(k // i)
    cnt = {}
    for b in B:
        g = gcd(b, k)
        for d in div:
            if g % d == 0:
                cnt[d] = cnt.get(d, 0) + 1
    ans = 0
    for a in A:
        g = gcd(a, k)
        ans += cnt.get(k // g, 0)
    print(ans)