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

a = [pow(10, A[i], p) for i in range(n)]
b = [pow(9, A[i], p) for i in range(n)]
c = [pow(7, A[i], p) for i in range(n)]
d = [pow(5, A[i], p) for i in range(n)]

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 (a[i] + b[j] + c[k] + d[l]) % p == q:
                    ans += 1

print(ans)