import sys
sys.setrecursionlimit(10**6)
input = sys.stdin.buffer.readline

n, m, k = map(int, input().split())
mod = 10**9+7
g = [[] for i in range(300)]
for i in range(m):
    p, q, c = map(int, input().split())
    p, q = p-1, q-1
    g[p].append((q, c))

dp = [[[0]*(k+1) for i in range(300)] for j in range(n)]
for i in range(300):
    dp[0][i][0] += 1

for i in range(n-1):
    for p in range(300):
        for q, c in g[p]:
            for j in range(k+1):
                if j+c <= k:
                    dp[i+1][q][j+c] += dp[i][p][j]
ans = 0
for i in range(300):
    ans += dp[n-1][i][k]
ans %= mod
print(ans)