#include <bits/stdc++.h>
#define rep(i,n)for(long long i=0;i<(long long)(n);++i)
#define all(a) a.begin(), a.end()
using namespace std;
typedef long long ll;
typedef unsigned long long ull;
typedef pair<ll, ll> P;
template<class T> inline bool chmax(T& a, T b) { if (a < b) { a = b; return true; } return false; }
template<class T> inline bool chmin(T& a, T b) { if (a > b) { a = b; return true; } return false; }
 
const int MOD=1e9+7;
const ll INF=1e18;
const int MAX=510000;
const double pi=acos(-1);
int dx[8] = {1,0,-1,0,1,1,-1,-1};
int dy[8] = {0,1,0,-1,-1,1,1,-1};

int n,m,k;
ll dp[310][310][310];
int p[300],q[300],c[300];
int main(){
  cin.tie(0);
  ios::sync_with_stdio(false); 
  
  cin >> n >> m >> k;
  rep(i,m){
    cin >> p[i] >> q[i] >> c[i];
    p[i]--;
    q[i]--;
  }
  memset(dp,sizeof(dp),0);
  rep(i,301) dp[0][i][0] = 1;
  
  rep(i,n){
    rep(j,m){
      rep(l,k+1){
      	dp[i+1][q[j]][l+c[j]]+=dp[i][p[j]][l];
        dp[i+1][q[j]][l+c[j]]%=MOD;
      }
    }
  }
  ll ans = 0;
  rep(i,300){
    ans += dp[n-1][i][k];
    ans%=MOD;
  }
  cout << ans << endl; 
  return 0;
}