import sys
input = sys.stdin.readline
sys.setrecursionlimit(10**8)

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

A.sort()

ans = 0

modP = [[0] * P]

for i in range(N):
    modP.append([])
    for p in range(P):
        modP[-1].append(modP[-2][p] + (1 if (A[i] % P) == p else 0))

for i in range(N - 3):
    for j in range(i + 1, N - 2):
        for k in range(j + 1, N - 1):
            a, b, c = A[i], A[j], A[k]
            cnt = (pow(10, a, P) + pow(9, b, P) + pow(7, c, P)) % P
            tmp = (Q - cnt) % P
            ans += modP[-1][tmp] - modP[k][tmp]

print(ans)