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

using ll = long long;
using ull = unsigned long long;
using ld = long double;
template<class t> using vc = vector<t>;
template<class t> using vvc = vc<vc<t>>;
using pi = pair<int,int>;
using vi = vc<int>;
using vvi = vvc<int>;

#define rep(i,a,b) for (int i = a; i < b; i++)
#define irep(i,a,b) for (int i = a; i > b; i--)
#define print(n) cout << n << endl
#define rup(a,b) (a+b-1)/b
#define input(A,N) rep(i,0,N) cin>>A[i];


int main(){
    cout << fixed << setprecision(15);
    
    int N,M,K;
    ll mod = ll(pow(10,9))+7;
    cin >> N >> M >> K;
    int P[M],Q[M],C[M];
    rep(i,0,M)  cin>>P[i]>>Q[i]>>C[i];
    vc<vvi> dp(N+1,vvi(300,vi(K+1,0)));
    int now = 0;
    rep(i,0,M){
        if (C[i]>K) continue;
        dp[1][Q[i]-1][C[i]]++;
    }
    rep(i,1,N){
        rep(j,0,M){
            rep(k,0,K+1){
                if(k+C[j]>K) break;
                dp[i+1][Q[j]-1][k+C[j]] += dp[i][P[j]-1][k];
                dp[i+1][Q[j]-1][k+C[j]] %= mod;
            }
        }
    }
    ll ans = 0;
    rep(i,0,300){
        ans += dp[N-1][i][K];
        ans %= mod;
    }
    print(ans);
    //system("pause");
    return 0;
}