import collections

def divisors(n):
    ret=[]
    for i in range(1,int(n**0.5)+1):
        if n%i==0:
            ret.append(i)
            if i!=n//i:
                ret.append(n//i)
    return ret
def gcd(a,b):
    if b==0:
        return a
    return gcd(b,a%b)

n,m,k=map(int,input().split())
tmp=list(map(str,input().split()))
op=tmp[0]
arr1=[int(tmp[i]) for i in range(1,m+1)]
arr2=[int(input()) for i in range(n)]
ans=0
if op=='+':
    dic=collections.defaultdict(int)
    for i in range(m):
        arr1[i]%=k
    for i in range(n):
        arr2[i]%=k
        dic[arr2[i]]+=1
    for i in range(m):
        if arr1[i]!=0:
            ans+=dic[k-arr1[i]]
        else:
            ans+=dic[0]
else:
    divs=divisors(k)
    l=len(divs)
    dic1=collections.defaultdict(int)
    dic2=collections.defaultdict(int)
    for i in range(m):
        dic1[gcd(k,arr1[i])]+=1
    for i in range(n):
        dic2[gcd(k,arr2[i])]+=1
    for i in range(l):
        for j in range(l):
            if divs[i]*divs[j]%k==0:
                ans+=dic1[divs[i]]*dic2[divs[j]]
print(ans)