N,M,K = map(int,input().split())
l = []
MOD = 10**9+7
NUM = 300

for _ in range(M):
  p,q,c = map(int,input().split())
  p -= 1
  q -= 1
  l.append((p,q,c))

dp = [[[0 for _ in range(K+1)] for _ in range(NUM)] for _ in range(N)]

for i in range(NUM):
  dp[0][i][0] = 1
for i in range(N-1):
  for j in range(M):
    p,q,c = l[j]
    for k in range(K+1-c):
      dp[i+1][q][k+c] += dp[i][p][k]
      dp[i+1][q][k+c] %= MOD

ans = 0

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

print(ans%MOD)