from itertools import combinations

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

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

print(ans)