N, P, Q = map(int, input().split())
A = list(map(int, input().split()))
A.sort()
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):
                a = (
                    pow(10, A[i], P)
                    + pow(9, A[j], P)
                    + pow(7, A[k], P)
                    + pow(5, A[l], P)
                )
                if a % P == Q:
                    ans += 1
print(ans)