from itertools import combinations
from functools import lru_cache

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

@lru_cache(1000)
def power(x, y):
    return pow(x, y, P)

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

print(ans)