#include<bits/stdc++.h>
namespace {
#pragma GCC diagnostic ignored "-Wunused-function"
#include<atcoder/all>
#pragma GCC diagnostic warning "-Wunused-function"
using namespace std;
using namespace atcoder;
#define rep(i,n) for(int i = 0; i < (int)(n); i++)
#define rrep(i,n) for(int i = (int)(n) - 1; i >= 0; i--)
#define all(x) begin(x), end(x)
#define rall(x) rbegin(x), rend(x)
template<class T> bool chmax(T& a, const T& b) { if (a < b) { a = b; return true; } else return false; }
template<class T> bool chmin(T& a, const T& b) { if (b < a) { a = b; return true; } else return false; }
using ll = long long;
using P = pair<int,int>;
using VI = vector<int>;
using VVI = vector<VI>;
using VL = vector<ll>;
using VVL = vector<VL>;
using mint = modint;

} int main() {
  ios::sync_with_stdio(false);
  cin.tie(0);
  int n, p, q;
  cin >> n >> p >> q;
  mint::set_mod(p);
  vector<array<mint, 4>> A(n);
  rep(i, n) {
    int x;
    cin >> x;
    A[i] = {
      mint(10).pow(x),
      mint(9).pow(x),
      mint(7).pow(x),
      mint(5).pow(x)
    };
  }
  VI cnt(p);
  int ans = 0;
  rrep(c, n) {
    rep(b, c) rep(a, b) {
      mint x = q - (A[a][0] + A[b][1] + A[c][2]);
      ans += cnt[x.val()];
    }
    cnt[A[c][3].val()]++;
  }
  cout << ans << '\n';
}