using System;

public class Hello
{
    static void Main()
    {
        string[] line = Console.ReadLine().Trim().Split(' ');
        var n = int.Parse(line[0]);
        var p = int.Parse(line[1]);
        var q = int.Parse(line[2]);
        line = Console.ReadLine().Trim().Split(' ');
        var a = Array.ConvertAll(line, int.Parse);
        getAns(n, p, q, a);
    }
    static long[,] makeArray(int p)
    {
        var x = new int[] { 10, 9, 7, 5 };
        var res = new long[4, 2000001];
        for (int i = 0; i < 4; i++) res[i, 0] = 1L;
        for (int i = 1; i <= 2000000; i++)
        {
            for (int j = 0; j < 4; j++)
            {
                res[j, i] = res[j, i - 1] * x[j];
                res[j, i] %= p;
            }
        }
        return res;
    }
    static void getAns(int n, int p, int q, int[] a)
    {
        var d = makeArray(p);

        Array.Sort(a);
        var c = 0;
        for (int i = 0; i < n - 3; i++)
        {
            for (int j = i + 1; j < n - 2; j++)
            {
                for (int k = j + 1; k < n - 1; k++)
                {
                    for (int L = k + 1; L < n; L++)
                    {
                        var ww = (d[0, a[i]] + d[1, a[j]]) % p;
                        ww += d[2, a[k]];
                        ww %= p;
                        ww += d[3, a[L]];
                        ww %= p;
                        if (ww == q) c++;
                    }
                }
            }
        }
        Console.WriteLine(c);
    }
}