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


int main() {
  const int D = 1e9 + 7;

  int N, M, K;
  cin >> N >> M >> K;

  vector<vector<pair<int, int>>> G(300);
  for (int i = 0; i < M; ++i) {
    int P, Q, C;
    cin >> P >> Q >> C;
    --P, --Q;
    G[P].emplace_back(C, Q);
  }

  static int d[2][301][300];
  for (int i = 0; i < 300; ++i) d[1][0][i] = 1;
  for (int i = 1; i < N; ++i) {
    memset(d[~i & 1], 0x00, sizeof(d[~i & 1]));
    for (int j = 0; j <= K; ++j) {
      for (int u = 0; u < 300; ++u) {
        if (d[i & 1][j][u] == 0) continue;
        for (auto cv : G[u]) {
          int c, v;
          tie(c, v) = cv;
          if (j + c <= K) {
            (d[~i & 1][j + c][v] += d[i & 1][j][u]) %= D;
          }
        }
      }
    }
  }

  int res = 0;
  for (int i = 0; i < N; ++i) (res += d[N & 1][K][i]) %= D;
  cout << res << endl;

  return 0;
}