#include<iostream>
#include<string>
#include<iomanip>
#include<cmath>
#include<vector>
#include<algorithm>
#include<utility>

using namespace std;

#define int long long
#define endl "\n"

constexpr long long INF = (long long)1e18;
constexpr long long MOD = 1'000'000'007; 

struct fast_io {
	fast_io(){
		std::cin.tie(nullptr);
		std::ios::sync_with_stdio(false);
	};
} fio;

#define f first
#define s second

signed main(){
	cout<<fixed<<setprecision(10);
	
	const int MAX = 310;
	int N, M, K;
	vector<pair<pair<int,int>,int>> in;
	vector<vector<vector<int>>> dp;
	cin>>N>>M>>K;
	
	in.resize(M);
	dp.resize(N+1, vector<vector<int>>(K+1, vector<int>(MAX)));
	
	for(int i = 0; i < M; i++){
		cin>>in[i].f.f>>in[i].f.s>>in[i].s;
	}
	
	
	for(int i = 0; i < MAX; i++){
		dp[0][0][i] = 1;
	}
	
	N--;
	
	for(int i = 0; i < N; i++){
		for(int j = 0; j < M; j++){
			for(int k = 0; k <= K; k++){
				if(in[j].s + k <= K) {
					dp[i+1][in[j].s + k][in[j].f.s] += dp[i][k][in[j].f.f];
					dp[i+1][in[j].s + k][in[j].f.s] %= MOD;
				}
				
			}
		}
	}
	
	int ans = 0;
	
	for(int i = 0; i < MAX; i++){
		ans += dp[N][K][i];
		// cout<<"i = "<<i<<" dp "<<dp[N][K][i]<<endl;
		ans %= MOD;
	}
	
	cout<<ans<<endl;
	
	return 0;
}