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

using ll = long long;
#define rep(i, n) for(int i = 0; i < n; i++)

int main() {
	int N, p, q;
	cin >> N >> p >> q;
	vector<int> a(N);
	rep(i, N) cin >> a[i];
	sort(a.begin(), a.end());
	vector<int> v(N);
	rep(i, N) v[i] = pow_mod(5, a[i], p);
	vector<map<int, int>> vmp(N);
	for(int i = N - 1; i >= 0; i--) {
		map<int, int> mp;
		if(i < N - 1) mp = vmp[i + 1];
		mp[v[i]]++;
		vmp[i] = mp;
	}
	int ans = 0;
	rep(i, N) {
		for(int j = i + 1; j < N; j++) {
			for(int k = j + 1; k < N - 1; k++) {
				ll s = pow_mod(10, a[i], p) + pow_mod(9, a[j], p) + pow_mod(7, a[k], p);
				int m = s % p;
				if(m > q) continue;
				int r = q - m;
				ans += vmp[k + 1][r];
			}
		}
	}
	cout << ans << endl;
}