# 標準入力された値を整数に変換する
def INT():
    return int(input())


# 標準入力された複数の値を整数に変換する
def MI():
    return map(int, input().split())


# 標準入力された複数の値を整数のリストに変換する
def LI():
    return list(map(int, input().split()))


from bisect import bisect_right

N, P, Q = MI()
A = LI()

mod10s = [0] * (max(A) + 1)
mod9s = [0] * (max(A) + 1)
mod7s = [0] * (max(A) + 1)
mod5s = [0] * P

cnt5s = [[] for _ in range(P)]
for i in range(N):
    mod10s[A[i]] = pow(10, A[i], P)
    mod9s[A[i]] = pow(9, A[i], P)
    mod7s[A[i]] = pow(7, A[i], P)
    mod5s[pow(5, A[i], P)] += 1
    cnt5s[pow(5, A[i], P)].append(A[i])

for i in range(P):
    cnt5s[i].sort()

ans = 0
for i in range(N):
    for j in range(N):
        if A[i] >= A[j]:
            continue
        for k in range(N):
            if A[j] >= A[k]:
                continue
            p10 = mod10s[A[i]]
            p9 = mod9s[A[j]]
            p7 = mod7s[A[k]]

            three_mod = (p10 + p9 + p7) % P
            res = (Q - three_mod + P) % P
            # if len(cnt5s[res]) - bisect_right(cnt5s[res], A[k]):
            #     print(A[k], cnt5s[res], bisect_right(cnt5s[res], A[k]))
            ans += len(cnt5s[res]) - bisect_right(cnt5s[res], A[k])

print(ans)