#include<bits/stdc++.h>
using namespace std;
#define int long long
#define REP(i,m,n) for(int i=(m);i<(n);i++)
#define rep(i,n) REP(i,0,n)
#define pb push_back
#define all(a) a.begin(),a.end()
#define rall(c) (c).rbegin(),(c).rend()
#define mp make_pair
#define endl '\n'
typedef long long ll;
typedef pair<ll,ll> pll;
typedef long double ld;
const ll inf=1e9+7;
const ll mod=1e9+7;
signed main(){
    ll n,m,k;cin>>n>>m>>k;
    vector<vector<vector<ll> > >dp(n+1,vector<vector<ll> >(301,vector<ll>(k+1)));
    rep(i,301){
        dp[0][i][0]=1;
    }
    vector<pair<pll,ll> >a(m);
    rep(i,m){
        ll p,q,c;cin>>p>>q>>c;
        a[i]=mp(mp(p,q),c);
    }
    rep(i,n-1){
        rep(j,k+1){
            rep(l,m){
                ll p=a[l].first.first;
                ll q=a[l].first.second;
                ll c=a[l].second;
                if(j+c>k)continue;
                dp[i+1][q][j+c]=(dp[i+1][q][j+c]+dp[i][p][j])%inf;
            }
        }
    }
    ll ans=0;
    rep(i,301){
        ans=(ans+dp[n-1][i][k])%inf;
    }
    cout<<ans<<endl;
}