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

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

    ans = 0
    if op == '+':
        dic_B = defaultdict(int)
        for b in B:
            dic_B[b%K] += 1
        for a in A:
           ans += dic_B[(K - a%K)%K]
    else:
        div_num = {}
        for a in A:
            d = K // gcd(a, K)
            if d in div_num:
                ans += div_num[d]
            else:
                div_num[d] = 0
                for b in B:
                    if b % d == 0:
                        div_num[d] += 1
                ans += div_num[d]
    print(ans)


if __name__ == '__main__':
    main()