#include <atcoder/math>
#include <bits/extc++.h>

int main() {
    using namespace std;
    unsigned N, P, Q;
    cin >> N >> P >> Q;

    unordered_map<unsigned, unsigned long> dp_0, dp_1, dp_2, dp_3;
    for (unsigned i{}; i < N; i++) {
        unsigned a;
        cin >> a;
        const auto v5{atcoder::pow_mod(5, a, P)};
        for (const auto &[k, v] : dp_2)
            dp_3[(k + v5) % P] += v;
        const auto v7{atcoder::pow_mod(7, a, P)};
        for (const auto &[k, v] : dp_1)
            dp_2[(k + v7) % P] += v;
        const auto v9{atcoder::pow_mod(9, a, P)};
        for (const auto &[k, v] : dp_0)
            dp_1[(k + v9) % P] += v;
        const auto v10{atcoder::pow_mod(10, a, P)};
        dp_0[v10]++;
    }

    cout << dp_3[Q] << endl;
    return 0;
}