n, p, q = map(int, input().split())
A = list(map(int, input().split()))

P = [pow(10, A[i], p) for i in range(n)]
Q = [pow(9, A[i], p) for i in range(n)]
S = [pow(7, A[i], p) for i in range(n)]
T = [pow(5, A[i], p) for i in range(n)]

A.sort()
C = [0 for _ in range(p)]
for i in range(3, n):
    C[T[i]] += 1
ans = 0
for i in range(n):
    res1 = P[i]
    for j in range(i + 1, n):
        res2 = (res1 + Q[j]) % p
        for k in range(j + 1, n):
            res3 = (res2 + S[k]) % p
            r = (q - res3) % p
            ans += C[r]
            if k + 1 < n:
                C[T[k + 1]] -= 1
        for k in range(j + 3, n):
            C[T[k]] += 1
    for k in range(i + 4, n):
        C[T[k]] += 1
print(ans)