n,m,k,op,*ab = open(0).read().split()
m,k = int(m),int(k)
from collections import Counter
from math import gcd
a = map(int,ab[:m])
b = [int(i)%k for i in ab[m:]]
if op == "+":
    d = Counter(b)
    print(sum(d[-ai%k] for ai in a))
    exit()
r = []
for i in range(1,k+1):
    if i*i > k: break
    if k%i==0: r.append(i)
    if i*i != k: r.append(k//i)
d = Counter(gcd(i,k) for i in b)
ans = 0
for ai in a:
    for bi,v in d.items():
        if ai*bi%k==0:
            ans += v
print(ans)