MOD = 10 ** 9 + 7
n, m, k = map(int, input().split())
t = [[] for _ in range(300)]
for _ in range(m):
    p, q, c = map(int, input().split())
    t[p - 1].append((q - 1, c))
dp = [[[0] * (300) for _ in range(k + 1)] for _ in range(n)]
for i in range(300):
    dp[0][0][i] = 1
for i in range(n - 1):
    for j in range(k + 1):
        for a in range(300):
            for b, c in t[a]:
                if j + c <= k:
                    dp[i + 1][j + c][b] += dp[i][j][a]
print(sum(dp[n - 1][k]) % MOD)