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

M = max(A)+1
pow_10, pow_9, pow_7, pow_5 = [1]*M, [1]*M, [1]*M, [1]*M
for i in range(M-1):
    pow_10[i+1] = pow_10[i]*10 % P
    pow_9[i+1] = pow_9[i]*9 % P
    pow_7[i+1] = pow_7[i]*7 % P
    pow_5[i+1] = pow_5[i]*5 % P

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 (pow_10[A[i]] + pow_9[A[j]] + pow_7[A[k]] + pow_5[A[l]]) % P == Q:
                    ans += 1
print(ans)