N, P, Q = map(int, input().split())
A = list(map(int, input().split()))
A.sort()
A_10 = [pow(10, a, P) for a in A]
A_9 = [pow(9, a, P) for a in A]
A_7 = [pow(7, a, P) for a in A]
A_5 = [pow(5, a, P) for a in A]

ans = 0
for i in range(N - 3):
    for j in range(i + 1, N - 2):
        for k in range(j + 1, N - 1):
            for l in range(k + 1, N):
                if (A_10[i] + A_9[j] + A_7[k] + A_5[l]) % P == Q:
                    ans += 1

print(ans)