N, P, Q = map(int, input().split())
A = list(map(int, input().split()))
A.sort()
X = [0] * P
ans = 0
for i in range(1, N - 2):
    X[(Q - pow(10, A[i - 1], P)) % P] += 1
    tmp1 = pow(9, A[i], P)
    for j in range(i + 1, N - 1):
        tmp2 = tmp1 + pow(7, A[j], P)
        tmp2 %= P
        for k in range(j + 1, N):
            tmp3 = tmp2 + pow(5, A[k], P)
            tmp3 %= P
            ans += X[tmp3]
print(ans)