#include <bits/stdc++.h>
using namespace std;
#define FOR(i,m,n) for(int i=(m);i<(n);++i)
#define REP(i,n) FOR(i,0,n)
using ll = long long;
constexpr int INF = 0x3f3f3f3f;
constexpr long long LINF = 0x3f3f3f3f3f3f3f3fLL;
constexpr double EPS = 1e-8;
constexpr int MOD = 998244353;
// constexpr int MOD = 1000000007;
constexpr int DY4[]{1, 0, -1, 0}, DX4[]{0, -1, 0, 1};
constexpr int DY8[]{1, 1, 0, -1, -1, -1, 0, 1};
constexpr int DX8[]{0, -1, -1, -1, 0, 1, 1, 1};
template <typename T, typename U>
inline bool chmax(T& a, U b) { return a < b ? (a = b, true) : false; }
template <typename T, typename U>
inline bool chmin(T& a, U b) { return a > b ? (a = b, true) : false; }
struct IOSetup {
  IOSetup() {
    std::cin.tie(nullptr);
    std::ios_base::sync_with_stdio(false);
    std::cout << fixed << setprecision(20);
  }
} iosetup;

long long mod_pow(long long x, long long n, const int m) {
  if ((x %= m) < 0) x += m;
  long long res = 1;
  for (; n > 0; n >>= 1) {
    if (n & 1) res = (res * x) % m;
    x = (x * x) % m;
  }
  return res;
}

int main() {
  int n, p, q; cin >> n >> p >> q;
  vector<int> A(n);
  for (int& A_i : A) cin >> A_i;
  ranges::sort(A);
  vector x(n, vector(p, 0));
  REP(a, n) FOR(b, a + 1, n) ++x[b][(mod_pow(10, A[a], p) + mod_pow(9, A[b], p)) % p];
  FOR(i, 1, n) REP(j, p) x[i][j] += x[i - 1][j];
  ll ans = 0;
  FOR(c, 2, n) FOR(d, c + 1, n) {
    const int r = (q - (mod_pow(7, A[c], p) + mod_pow(5, A[d], p)) % p + p) % p;
    ans += x[c - 1][r];
  }
  cout << ans << '\n';
  return 0;
}