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

int siz = 2000010;

int main() {
    int n;
    long long p, q;
    cin >> n >> p >> q;
    vector<long long> a(n);
    for (int i = 0; i < n; i++) {
        cin >> a[i];
    }
    vector<long long> ten(siz), nine(siz), seven(siz), five(siz);
    ten[0] = nine[0] = seven[0] = five[0] = 1LL;
    for (int i = 1; i < siz; i++) {
        ten[i] = ten[i - 1] * 10LL % p;
        nine[i] = nine[i - 1] * 9LL % p;
        seven[i] = seven[i - 1] * 7LL % p;
        five[i] = five[i - 1] * 5LL % p;
    }
    sort(a.begin(), a.end());
    int ans = 0;
    for (int i = 0; i < n; i++) {
        for (int j = i + 1; j < n; j++) {
            for (int k = j + 1; k < n; k++) {
                for (int l = k + 1; l < n; l++) {
                    long long res = (ten[a[i]] + nine[a[j]] + seven[a[k]] + five[a[l]]) % p;
                    if (res == q) {
                        ans++;
                    }
                }
            }
        }
    }
    cout << ans << endl;
}