#region Header
#!/usr/bin/env python3
# from typing import *

import sys
import io
import math
import collections
import decimal
import itertools
from queue import PriorityQueue
import bisect
import heapq

def input():
    return sys.stdin.readline()[:-1]

sys.setrecursionlimit(1000000)
#endregion

# _INPUT = """4 6 2
# 1 2 0
# 1 3 0
# 2 1 1
# 3 1 0
# 2 3 0
# 3 2 2
# """
# sys.stdin = io.StringIO(_INPUT)

MOD = 1000000007


def main():
    N, M, K = map(int, input().split())
    P = [None for _ in range(M)]
    Q = [None for _ in range(M)]
    C = [None for _ in range(M)]
    for i in range(M):
        P[i], Q[i], C[i] = map(int, input().split())
        P[i] -= 1
        Q[i] -= 1

    Kmax = 300
    dp = [[0 for _ in range(Kmax+1)] for _ in range(300)]
    for j in range(300):
        dp[j][0] = 1

    for i in range(N-1):
        dp1 = [[0 for _ in range(Kmax+1)] for _ in range(300)]
        for m in range(M):
            for k in range(Kmax+1):
                if k + C[m] <= Kmax:
                    dp1[Q[m]][k+C[m]] = (dp1[Q[m]][k+C[m]] + dp[P[m]][k]) % MOD
        dp = dp1

    n = 0
    for j in range(300):
        n += dp[j][K]
    print(n % MOD)

if __name__ == '__main__':
    main()