import sys
reader = (s.rstrip() for s in sys.stdin)
input = reader.__next__


n,m,k = map(int, input().split())
op, *B = input().split()
B = list(map(int, B))
A = [int(input()) for i in range(n)]

from collections import defaultdict
from math import gcd


if op == "+":
    d = defaultdict(int)
    for bi in B:
        d[bi%k] += 1

    ans = 0
    for ai in A:
        target = (-ai)%k
        ans += d[target]
else:
    d = defaultdict(int)
    for bi in B:
        d[gcd(bi, k)] += 1

    ans = 0
    for ai in A:
        c = gcd(ai, k)
        for key, value in d.items():
            if key*c%k == 0:
                ans += value

print(ans)