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

vector<long long> v = {10LL, 9LL, 7LL, 5LL};
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<vector<long long>> mods(4, vector<long long>(siz, 1LL));
    for (int i = 0; i < 4; i++) {
        for (int j = 1; j < siz; j++) {
            mods[i][j] = mods[i][j - 1] * v[i] % p;
        }
    }
    sort(a.begin(), a.end());
    vector<vector<long long>> ans1(n, vector<long long>(p));
    for (int i = 0; i < n; i++) {
        for (int j = 0; j < n; j++) {
            for (int k = 0; k < n; k++) {
                if (i < j && j < k) {
                    long long res = ((mods[0][a[i]] + mods[1][a[j]]) % p + mods[2][a[k]]) % p;
                    ans1[k][res]++;
                }
            }
        }
    }
    vector<vector<long long>> ans2(n, vector<long long>(p));
    for (int i = 0; i < n; i++) {
        ans2[i][mods[3][a[i]]]++;
    }
    for (int i = n - 2; i >= 0; i--) {
        for (int j = 0; j < p; j++) {
            ans2[i][j] += ans2[i + 1][j];
        }
    }
    long long ans = 0LL;
    for (int i = 0; i < n - 1; i++) {
        for (int j = 0; j < p; j++) {
            int i2 = i + 1;
            int j2 = q - j;
            if (j2 < 0) {
                j2 += p;
            }
            ans += ans1[i][j] * ans2[i2][j2];
        }
    }
    cout << ans << endl;
}