from itertools import combinations

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


memo = {}


def f(a, b):
    if (a, b) in memo: return memo[a, b]
    res = pow(a, b, P)
    memo[a, b] = res
    return res


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

print(ans)