/**
 *    author:  USERNAME
 *    created: yyyy-mm-dd hh:mm:ss
 **/

#include <bits/stdc++.h>
using namespace std;

// clang-format off
/* accelration */
// 高速バイナリ生成
#pragma GCC target("avx")
#pragma GCC optimize("O3")
#pragma GCC optimize("unroll-loops")
// cin cout の結びつけ解除, stdioと同期しない(入出力非同期化)
// cとstdの入出力を混在させるとバグるので注意
struct Fast {Fast() {std::cin.tie(0); ios::sync_with_stdio(false);}} fast;

/* alias */
// type
using ull = unsigned long long;
using ll = long long;
using ld = long double;
// pair
using pii = pair<int, int>;
// vector
using vi = vector<int>;
using vl = vector<long>;
using vll = vector<ll>;
using vvi = vector<vi>;
using vvl = vector<vl>;
using vvll = vector<vll>;
using vs = vector<string>;
using vpii = vector<pii>;
// unordered set
using usi = unordered_set<int>;
using usll = unordered_set<ll>;
using uss = unordered_set<string>;

/* define short */
#define pb push_back
#define mp make_pair
#define um unordered_map
#define all(obj) (obj).begin(), (obj).end()
#define YESNO(bool) if(bool){cout<<"YES"<<endl;}else{cout<<"NO"<<endl;}
#define yesno(bool) if(bool){cout<<"yes"<<endl;}else{cout<<"no"<<endl;}
#define YesNo(bool) if(bool){cout<<"Yes"<<endl;}else{cout<<"No"<<endl;}

/* REP macro */
#define reps(i, a, n) for (ll i = (a); i < (ll)(n); ++i)
#define rep(i, n) reps(i, 0, n)
#define rrep(i, n) reps(i, 1, n + 1)
#define repd(i,n) for(ll i=n-1;i>=0;i--)
#define rrepd(i,n) for(ll i=n;i>=1;i--)

/* debug */
// 標準エラー出力を含む提出はrejectされる場合もあるので注意
#define debug(x) cerr << "\033[33m(line:" << __LINE__ << ") " << #x << ": " << x << "\033[m" << endl;

/* func */
inline int in_int() {int x; cin >> x; return x;}
inline ll in_ll() {ll x; cin >> x; return x;}
inline double in_double() {{double x; cin >> x; return x;}}
inline string in_str() {string x; cin >> x; return x;}
inline int ctoi(char c) {return c - '0';}
// vector_finder: (arg)elementを vectorの先頭から(arg)search_lengthまで先頭から検索し、boolを返す
// (arg)search_length: 走査するベクトル長の上限(先頭から何要素目までを検索対象とするか、1始まりで)
template <typename T> inline bool vector_finder(std::vector<T> vec, T element, unsigned int search_length) {
    auto itr = std::find(vec.begin(), vec.end(), element);
    size_t index = std::distance( vec.begin(), itr );
    if (index == vec.size() || index >= search_length) {return false;} else {return true;}
}
template <typename T> inline void print(const vector<T>& v, string s = " ")
    {rep(i, v.size()) cout << v[i] << (i != (ll)v.size() - 1 ? s : "\n");}
template <typename T, typename S> inline void print(const pair<T, S>& p)
    {cout << p.first << " " << p.second << endl;}
template <typename T> inline void print(const T& x) {cout << x << "\n";}
template <typename T, typename S> inline void print(const vector<pair<T, S>>& v)
    {for (auto&& p : v) print(p);}
template <typename T, typename S> inline void print(const map<T, S>& m)
    {for (auto&& p : m) print(p);}
// 第一引数と第二引数を比較し、第一引数(a)をより大きい/小さい値に上書き
template <typename T> inline bool chmin(T& a, const T& b) {bool compare = a > b; if (a > b) a = b; return compare;}
template <typename T> inline bool chmax(T& a, const T& b) {bool compare = a < b; if (a < b) a = b; return compare;}
// gcd lcm
// C++17からは標準実装
// template <typename T> T gcd(T a, T b) {if (b == 0)return a; else return gcd(b, a % b);}
// template <typename T> inline T lcm(T a, T b) {return (a * b) / gcd(a, b);}
// clang-format on
long long modpow(long long a, long long n, long long mod) {
    long long res = 1;
    while (n > 0) {
        if (n & 1) res = res * a % mod;
        a = a * a % mod;
        n >>= 1;
    }
    return res;
}

void recursive_comb(int *indexes, int s, int rest, std::function<void(int *)> f) {
  if (rest == 0) {
    f(indexes);
  } else {
    if (s < 0) return;
    recursive_comb(indexes, s - 1, rest, f);
    indexes[rest - 1] = s;
    recursive_comb(indexes, s - 1, rest - 1, f);
  }
}

// nCkの組み合わせに対して処理を実行する
void foreach_comb(int n, int k, std::function<void(int *)> f) {
  int indexes[k];
  recursive_comb(indexes, n - 1, k, f);
}

int main() {
    auto N = in_int();
    auto P = in_int();
    auto Q = in_int();
    vi A(N);
    rep(idx, N){
        A.at(idx) = in_int();
    }
    sort(all(A));

    um<int, vi> mod_P_pow_5;

    for (const auto& a_elm : A){
        auto key = modpow(5, a_elm, P);
        if (!mod_P_pow_5.contains(key)){
            mod_P_pow_5.emplace(key, vi());
        }
        mod_P_pow_5.at(key).push_back(a_elm);
    }

    ll ctr = 0;
    foreach_comb(N, 3, [&A, P, Q, &mod_P_pow_5, &ctr](int *indexes)
                 { 
                    auto a = A.at(indexes[0]);
                    auto b = A.at(indexes[1]);
                    auto c = A.at(indexes[2]);
                    auto c_mod = (modpow(10, a, P) + modpow(9, b, P) + modpow(7, c, P)) % P;
                    auto rest_mod = (Q - c_mod) % P;
                    if (mod_P_pow_5.contains(rest_mod)){
                        ctr += mod_P_pow_5.at(rest_mod).size();
                        ctr -= upper_bound(all(mod_P_pow_5.at(rest_mod)), c) - mod_P_pow_5.at(rest_mod).begin();
                    } });
    print(ctr);

    return 0;
}