#include <bits/stdc++.h>
#include <atcoder/all>
using namespace std;
using namespace atcoder;
#define rep(i,a,b) for(it i=(it)(a);i<=(it)b;i++)
#define all(v) v.begin(), v.end()
#define rall(v) v.rbegin(), v.rend()
#define moda 998244353LL
#define modb 1000000007LL
#define dai 2500000000000000000LL
#define tyu 2000000000
#define sho -dai
#define eps 1e-14
#define yn(x) cout<<(x ? "Yes":"No")<<endl;
using it=long long;
using un=unsigned long long;
using db=long double;
using st=string;
using ch=char;
using bo=bool;
using P=pair<it,it>;
using T=tuple<it,it,it>;
using vi=vector<it>;
using vd=vector<db>;
using vs=vector<st>;
using vc=vector<ch>;
using vb=vector<bo>;
using vp=vector<P>;
using sp=set<P>;
using ss=set<st>;
using si=set<it>;
using vvi=vector<vi>;
using vvd=vector<vd>;
using vvs=vector<vs>;
using vvb=vector<vb>;
using vvc=vector<vc>;
using vvp=vector<vp>;
using vsi=vector<si>;
using vsp=vector<sp>;
using vvsi=vector<vsi>;
using vvsp=vector<vsp>;
using vvvi=vector<vvi>;
using vvvd=vector<vvd>;
using vvvvi=vector<vvvi>;
using mint=modint;
const it dx[4]={0,1,0,-1};
const it dy[4]={1,0,-1,0};

int main(){
  it n,p,q,ans=0;cin>>n>>p>>q;
  mint::set_mod(p);
  mint b=10,c=9,d=7,e=5;
  vi a(n);
  rep(i,0,n-1)cin>>a[i];
  sort(all(a));
  vvi kazu(n,vi(4));
  rep(i,0,n-1){
    kazu[i][0]=(b.pow(a[i])).val();
    kazu[i][1]=(c.pow(a[i])).val();
    kazu[i][2]=(d.pow(a[i])).val();
    kazu[i][3]=(e.pow(a[i])).val();
  }
  rep(i,0,n-1)
    rep(j,i+1,n-1){
      if(a[i]==a[j])continue;
      rep(k,j+1,n-1){
        if(a[j]==a[k])continue;
        rep(l,k+1,n-1){
          if(a[k]==a[l])continue;
          if((kazu[i][0]+kazu[j][1]+kazu[k][2]+kazu[l][3])%p==q)ans++;
        }
      }
    }
  cout<<ans<<endl;
}