#include <bits/stdc++.h>

using namespace std;
typedef long long ll;
typedef pair<ll, ll> p_ll;

template<class T>
void debug(T itr1, T itr2) { auto now = itr1; while(now<itr2) { cout << *now << " "; now++; } cout << endl; }
#define repr(i,from,to) for (ll i=(ll)from; i<(ll)to; i++)
#define all(vec) vec.begin(), vec.end()
#define rep(i,N) repr(i,0,N)
#define per(i,N) for (int i=(int)N-1; i>=0; i--)

const ll MOD = pow(10,9)+7;
const ll LLINF = pow(2,61)-1;
const int INF = pow(2,30)-1;

vector<ll> fac;
void c_fac(int x=pow(10,6)+10) { fac.resize(x,true); rep(i,x) fac[i] = i ? (fac[i-1]*i)%MOD : 1; }
ll inv(ll a, ll m=MOD) { ll b = m, x = 1, y = 0; while (b!=0) { int d = a/b; a -= b*d; swap(a,b); x -= y*d; swap(x,y); } return (x+m)%m; }
ll nck(ll n, ll k) { return fac[n]*inv(fac[k]*fac[n-k]%MOD)%MOD; }
ll gcd(ll a, ll b) { if (a<b) swap(a,b); return b==0 ? a : gcd(b, a%b); }
ll lcm(ll a, ll b) { return a/gcd(a,b)*b; }

struct chord { ll p, q, c; };

int main() {
  ll N, M, K; cin >> N >> M >> K;
  chord c[300];
  rep(i,M) { cin >> c[i].p >> c[i].q >> c[i].c; c[i].p--; c[i].q--; }

  ll dp[N][300][K+1]; rep(i,N) rep(j,300) fill_n(dp[i][j],K+1,0); rep(i,300) dp[0][i][0] = 1;
  rep(i,N-1) rep(j,M) rep(k,K+1) {
    if (k+c[j].c>K) continue;
    dp[i+1][c[j].q][k+c[j].c] = (dp[i+1][c[j].q][k+c[j].c]+dp[i][c[j].p][k]) % MOD;
  }
  ll result = 0; rep(i,300) result = (result+dp[N-1][i][K]) % MOD;
  cout << result << endl;
  return 0;
}