import sys
input = sys.stdin.readline
from collections import *

N, M, K = map(int, input().split())
G = [[] for _ in range(300)]

for _ in range(M):
    P, Q, C = map(int, input().split())
    G[P-1].append((Q-1, C))
    
dp = [[[0]*(K+1) for _ in range(300)] for _ in range(N)]

for i in range(300):
    dp[0][i][0] = 1

MOD = 10**9+7

for i in range(N-1):
    for j in range(300):
        for k in range(K+1):
            for nj, C in G[j]:
                if k+C<=K:
                    dp[i+1][nj][k+C] += dp[i][j][k]
                    dp[i+1][nj][k+C] %= MOD

ans = 0

for i in range(300):
    ans += dp[N-1][i][K]
    ans %= MOD

print(ans)