import java.util.*;

public class Main{
    
    static final int MOD = (int)1e9+7;
    static final int MAX = 301;
    static int n;
    static int m;
    static int k;
    static ArrayList<Integer>[] graph;
    static ArrayList<Integer>[] complexity;
    static int[][][] memo;
    
    public static int dfs(int now, int cmp, int cnt){
        if(cmp <= k && memo[now][cmp][cnt] != -1){
            return memo[now][cmp][cnt];
        }
        
        if(cnt == n || cmp > k){
            //System.out.println(cnt + " : " + cmp);
            if(cnt == n && cmp == k){
                return 1;
            }else{
                return 0;
            }
        }
        
        int ret = 0;
        for(int i=0; i<graph[now].size(); i++){
            int next = graph[now].get(i);
            int cmpsum = complexity[now].get(i) + cmp;
            ret += dfs(next, cmpsum, cnt+1);
            ret %= MOD;
        }
        
        memo[now][cmp][cnt] = ret;
        return memo[now][cmp][cnt];
    }
    
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        n = Integer.parseInt(sc.next());
        m = Integer.parseInt(sc.next());
        k = Integer.parseInt(sc.next());
        
        memo = new int[MAX][MAX][MAX];
        for(int i=0; i<MAX; i++){
            for(int j=0; j<MAX; j++){
                Arrays.fill(memo[i][j], -1);
            }
        }
        
        graph = new ArrayList[MAX];
        complexity = new ArrayList[MAX];
        for(int i=0; i<MAX; i++){
            graph[i] = new ArrayList<>();
            complexity[i] = new ArrayList<>();
        }
        for(int i=0; i<m; i++){
            int p = Integer.parseInt(sc.next())-1;
            int q = Integer.parseInt(sc.next())-1;
            int c = Integer.parseInt(sc.next());
            
            graph[p].add(q);
            complexity[p].add(c);
        }
        
        int ans = 0;
        for(int i=0; i<MAX; i++){
            ans += dfs(i, 0, 1);
            ans %= MOD;
        }
        
        System.out.println(ans);
    }
}