import java.util.*;

public class Main {
    static ArrayList<HashMap<Integer, Integer>> list = new ArrayList<>();
    static int[][][] dp;
    static final int MOD = 1000000007;
	public static void main (String[] args) {
		Scanner sc = new Scanner(System.in);
		int n = sc.nextInt();
		int m = sc.nextInt();
		int k = sc.nextInt();
		for (int i = 0; i <= 300; i++) {
		    list.add(new HashMap<>());
		}
		for (int i = 0; i < m; i++) {
		    int p = sc.nextInt();
		    int q = sc.nextInt();
		    int c = sc.nextInt();
		    list.get(q).put(p, c);
		}
		dp = new int[n][k + 1][301];
		for (int[][] arr1 : dp) {
		    for (int[] arr2 : arr1) {
		        Arrays.fill(arr2, -1);
		    }
		}
		int ans = 0;
		for (int i = 1; i <= 300; i++) {
		    ans += dfw(n - 1, k, i);
		    ans %= MOD;
		}
		System.out.println(ans);
    }
    
    static int dfw(int idx, int value, int code) {
        if (idx == 0 && value == 0) {
            return 1;
        }
        if (idx <= 0 || value < 0) {
            return 0;
        }
        if (dp[idx][value][code] >= 0) {
            return dp[idx][value][code];
        }
        int ans = 0;
        for (Map.Entry<Integer, Integer> entry : list.get(code).entrySet()) {
            ans += dfw(idx - 1, value - entry.getValue(), entry.getKey());
            ans %= MOD;
        }
        dp[idx][value][code] = ans;
        return ans;
    }
}