from collections import Counter
from copy import copy


def maker(l, x):
    while True:
        current = (l[-1]*x) % P
        for i, item in enumerate(l):
            if item == current:
                return (l[:i], l[i:])
        l.append(current)


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

A.sort()

lo = []
for x in [10, 9, 7, 5]:
    loops = maker([x%P], x)
    lo.append([])

    for a in A:
        a -= 1
        if len(loops[0]) > a:
            lo[-1].append(loops[0][a])
        a -= len(loops[0])
        lo[-1].append(loops[1][a%len(loops[1])])

clo = [Counter(l) for l in lo]
answer = 0

clo3 = clo[3]

for i in range(N):
    x = lo[0][i]
    clo3[lo[3][i]] -= 1

    tmp = copy(clo3)

    for j in range(i+1, N):
        tmp[lo[3][j]] -= 1
        for k in range(j+1, N):
            tmp[lo[3][k]] -= 1
            answer += tmp.get((Q-(x+lo[1][j]+lo[2][k])) % P, 0)

        for k in range(j+1, N):
            tmp[lo[3][k]] += 1

print(answer)