import sys
readline=sys.stdin.readline
from collections import defaultdict
from math import gcd as GCD

def Divisors(N):
    divisors=[]
    for i in range(1,N+1):
        if i**2>=N:
            break
        elif N%i==0:
            divisors.append(i)
    if i**2==N:
        divisors+=[i]+[N//i for i in divisors[::-1]]
    else:
        divisors+=[N//i for i in divisors[::-1]]
    return divisors

N,M,K=map(int,readline().split())
op,*B=readline().split()
for m in range(M):
    B[m]=int(B[m])
A=[int(readline()) for n in range(N)]
if op=="+":
    cnt=defaultdict(int)
    for b in B:
        cnt[b%K]+=1
    ans=0
    for a in A:
        ans+=cnt[(-a)%K]
else:
    cnt=defaultdict(int)
    D=Divisors(K)
    for b in B:
        for d in D:
            if b%d==0:
                cnt[d]+=1
    ans=0
    for a in A:
        g=GCD(a,K)
        ans+=cnt[K//g]
print(ans)