def main():
    import sys
    from collections import defaultdict
    from math import sqrt, gcd
    input = sys.stdin.readline

    N, M, K = map(int, input().split())
    line = input().split()
    op = line[0]
    B = list(map(int, line[1:]))
    A = [0] * N
    for i in range(N):
        A[i] = int(input())

    ans = 0
    if op == '+':
        assert 0
        dic_B = defaultdict(int)
        for b in B:
            dic_B[b%K] += 1
        for a in A:
           ans += dic_B[K - a%K]
    else:
        nmax = int(sqrt(K))
        div = []
        div_append = div.append
        for d in range(1, nmax+1):
            if K%d == 0:
                div_append(d)
                div_append(K//d)
        if nmax ** 2 == K:
            div.pop()
        div_num = defaultdict(int)
        for d in div:
            for b in B:
                if b%d == 0:
                    div_num[d] += 1
        for a in A:
            d = K // gcd(a, K)
            ans += div_num[d]
    print(ans)


if __name__ == '__main__':
    main()