## https://yukicoder.me/problems/no/2709


def main():
    N, P, Q = map(int, input().split())
    A = list(map(int, input().split()))

    A.sort()

    pows = [0] * P
    pow_list = [[0] * P for _ in range(N + 1)]
    for i in range(N):
        a = A[i]
        b = pow(5, a, P)
        pows[b] += 1
        for p in range(P):
            pow_list[i + 1][p] = pows[p]
    
    answer = 0
    for i in range(N):
        ten = pow(10, A[i], P)
        for j in range(i + 1, N):
            nine = pow(9, A[j], P)
            for k in range(j + 1, N):
                seven = pow(7, A[k], P)

                q = Q
                q -= ten
                q %= P
                q -= nine
                q %= P
                q -= seven
                q %= P

                ans = pow_list[-1][q] - pow_list[k + 1][q]
                answer += ans
    print(answer)



if __name__ == "__main__":
    main()