from collections import defaultdict
from math import gcd

N, M, K = map(int, input().split())
op,*b = map(str,input().split())
B = [int(i) for i in b]
A = [int(input()) for _ in range(N)]

res = 0
if op=='+':
    d = defaultdict(int)
    for i in range(M):
        d[B[i]%K] += 1
    for i in range(N):
        res += d[(K-(A[i]%K))%K]
    print(res)
else:
    mod = []
    for i in range(1,K+1):
        if i*i>K:break
        if K%i==0:
            mod.append(i)
            if i!=K//i:
                mod.append(K//i)
    mod.sort()
    d = defaultdict(int)
    for i in range(M):
        g = gcd(B[i],K)
        for m in mod:
            if m*m>g:break
            if g%m==0:
                d[m] += 1
                if m!=g//m:
                    d[g//m] += 1
    for i in range(N):
        g = gcd(K,A[i])
        res += d[K//g]
    print(res)