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

# 10, 9, 7, 5
# a < b < c < d
A.sort()
limit = 2*10**6
power10, power9, power7, power5 = [1], [1], [1], [1]
for i in range(limit):
    power10.append(power10[-1] * 10 % P)
    power9.append(power9[-1] * 9 % P)
    power7.append(power7[-1] * 7 % P)
    power5.append(power5[-1] * 5 % P)

ans = 0
for i in range(N):
    a = A[i]
    for j in range(i + 1, N):
        b = A[j]
        if b == a:
            continue
        for k in range(j + 1, N):
            c = A[k]
            if c == b:
                continue
            for l in range(k + 1, N):
                d = A[l]
                if d == c:
                    continue
                
                if (power10[a] + power9[b] + power7[c] + power5[d]) % P == Q:
                    ans += 1

print(ans)