from itertools import combinations

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

ans = 0
for a, b, c, d in combinations(A, 4):
    x = pow(10, a, P)
    x += pow(9, b, P)
    x += pow(7, c, P)
    x += pow(5, d, P)
    if x % P == Q:
        ans += 1

print(ans)