MOD = 10 ** 9 + 7

n, m, k = map(int, input().split())
edges = []
for _ in range(m):
  p, q, c = map(int, input().split())
  edges.append((p - 1, q - 1, c))

dp = [{ 0 : 1 } for _ in range(300)]
for _ in range(n - 1):
  ndp = [{} for _ in range(300)]
  for u, v, c in edges:
    for cur, cnt in dp[u].items():
      if cur + c <= k:
        ndp[v][cur + c] = (ndp[v].get(cur + c, 0) + cnt) % MOD

  dp = ndp

ans = 0
for v in range(300):
  ans = (ans + dp[v].get(k, 0)) % MOD

print(ans)