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

int main() {
    const long mod = 1000000007;
    int n, m, k;
    cin >> n >> m >> k;
    vector<int> p(m), q(m), c(m);
    vector<vector<bool>> ac(300, vector<bool>(300));
    for (int i = 0; i < m; i++) {
        cin >> p.at(i) >> q.at(i) >> c.at(i);
        p.at(i)--; q.at(i)--;
        ac.at(p.at(i)).at(q.at(i)) = true;
    }
    vector<vector<vector<long>>> dp(n - 1, vector<vector<long>>(300, vector<long>(k + 1)));
    for (int i = 0; i < m; i++) {
        if (c.at(i) <= k) dp.at(0).at(q.at(i)).at(c.at(i))++;
    }
    for (int i = 1; i < n - 1; i++) {
        for (int j = 0; j < 300; j++) {
            for (int comp = c.at(j); comp <= k; comp++) {
                for (int l = 0; l < 300; l++) {
                    if (ac.at(j).at(l)) {
                        dp.at(i).at(q.at(j)).at(comp) += dp.at(i - 1).at(p.at(j)).at(comp - c.at(j));
                        dp.at(i).at(q.at(j)).at(comp) %= mod;
                    }
                }
            }
        }
    }
    long ans = 0;
    for (int i = 0; i < 300; i++) {
        ans += dp.at(n - 2).at(i).at(k);
        ans %= mod;
    }
    cout << ans << endl;
}