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

long long repeat2(long long a, long long b,long long mod){
    long long p = a%mod,ret = 1;
    while(b){
        if(b&1) ret = ret*p %mod;
        p = p*p %mod; b >>= 1;
    }
    return ret;
}

int main() {
    int N,P,Q; cin >> N >> P >> Q;
    vector<int> A(N);
    for(auto &a : A) cin >> a;

    vector<vector<int>> Rmod(N);
    vector<int> add(100000);
    for(int i=N-1; i>=0; i--) add.at(repeat2(5,A.at(i),P))++,Rmod.at(i) = add;
    
    long long answer = 0;
    for(int i=0; i<N-3; i++){
        long long a = repeat2(10,A.at(i),P);
        for(int k=i+1; k<N-2; k++){
            long long b = repeat2(9,A.at(k),P);
            for(int l=k+1; l<N-1; l++){
                long long c = repeat2(7,A.at(l),P);
                long long goal = (Q-(a+b+c)%P+P)%P;
                answer += Rmod.at(l+1).at(goal);
            }
        }
    }
    cout << answer << endl;
}