using System.Collections.Generic;
using System.Linq;
using System;

public class P
{
    public int q { get; set; }
    public int c { get; set; }
}

public class Hello
{
    public static int n, m, k;
    static void Main()
    {
        string[] line = Console.ReadLine().Trim().Split(' ');
        n = int.Parse(line[0]);
        m = int.Parse(line[1]);
        k = int.Parse(line[2]);
        var ps = new List<P>[301];
        for (int i = 0; i < 301; i++) ps[i] = new List<P>();
        var hs = new HashSet<int>();
        for (int i = 0; i < m; i++)
        {
            line = Console.ReadLine().Trim().Split(' ');
            var p = int.Parse(line[0]);
            var q = int.Parse(line[1]);
            var c = int.Parse(line[2]);
            if (c <= k)
            {
                ps[p].Add(new P { q = q, c = c });
                hs.Add(p);
            }
        }
        var plist = hs.ToArray();
        Array.Sort(plist);
        getAns(ps, plist);
    }
    static void getAns(List<P>[] ps, int[] plist)
    {
        var dp = new int[n, 301, k + 1];
        foreach (var x in plist)
            foreach (var y in ps[x])
                dp[1, y.q, y.c]++;
        for (int i = 0; i < n - 1; i++)
        {
            for (int j = 1; j <= 300; j++)
            {
                for (int L = 0; L <= k; L++)
                {
                    foreach (var x in ps[j])
                    {
                        var ww = L + x.c;
                        if (ww <= k) dp[i + 1, x.q, ww] += dp[i, j, L];
                    }
                }
            }
        }
        var ans = 0;
        for (int i = 1; i <= 300; i++)
            ans += dp[n - 1, i, k];
        Console.WriteLine(ans);
    }
}