from sys import stdin
from math import gcd
n,m,k = map(int,stdin.readline().rstrip().split())
li = list(map(str,stdin.readline().rstrip().split()))
op = li[0]
b = [int(li[i]) for i in range(1,m+1)]
a = [int(stdin.readline().rstrip()) for _ in range(n)]
point = 0
if op == "+":
    dic = {}
    for B in b:
        if B%k in dic:
            dic[B%k] += 1
        else:
            dic[B%k] = 1
    for A in a:
        if -A%k in dic:
            point += dic[-A%k]
elif op == "*":
    dic_A = {};dic_B = {}
    for B in b:
        gcd_B = gcd(B,k)
        if gcd_B in dic_B:
            dic_B[gcd_B] += 1
        else:
            dic_B[gcd_B] = 1
    for A in a:
        gcd_A = gcd(A,k)
        if gcd_A in dic_A:
            dic_A[gcd_A] += 1
        else:
            dic_A[gcd_A] = 1
    for A_key,A_value in dic_A.items():
        for B_key,B_value in dic_B.items():
            if A_key*B_key%k == 0:
                point += A_value*B_value
print(point)