#include <bits/stdc++.h>
#include <atcoder/all>
using namespace std;
using namespace atcoder;
#define rep(i, n) for(int i=0;i<(n);++i)
#define rep1(i, n) for(int i=1;i<=(n);i++)
#define ll long long
using mint = modint998244353;
using P = pair<ll,ll>;
using lb = long double;
using T = tuple<ll, ll, ll>;
#ifdef LOCAL
#  include <debug_print.hpp>
#  define dbg(...) debug_print::multi_print(#__VA_ARGS__, __VA_ARGS__)
#else
#  define dbg(...) (static_cast<void>(0))
#endif

int main()
{
    int n, p, q;
    cin >> n >> p >> q;
    vector<int> a(n);
    rep(i,n) cin >> a[i];
    vector<vector<int>> sum(n+1, vector<int>(p));
    rep(i,n) {
        int r = pow_mod(5, a[i], p);
        sum[i+1][r]++;
    }   
    ll ans = 0;
    rep(i,n)rep(j,p) sum[i+1][j] += sum[i][j];
    for(int i=0;i<n;i++)for(int j=i+1;j<n;j++)for(int k=j+1;k<n;k++){
        int r = pow_mod(10,a[i],p) + pow_mod(9, a[j], p) + pow_mod(7, a[k], p);
        int v = ((q-r)%p+p)%p;
        ans += sum[n][v] - sum[k+1][v];
    }
    cout << ans << endl;
    return 0;
}