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

DP = [[[0 for _ in range(k + 1)] for _ in range(300)] for _ in range(n)]
for i in range(300):
    DP[0][i][0] = 1
for i in range(n - 1):
    for j in range(300):
        for c in range(k + 1):
            if DP[i][j][c] > 0:
                for nj, nc in Edge[j]:
                    if c + nc > k:
                        continue
                    DP[i + 1][nj][c + nc] += DP[i][j][c]
                    DP[i + 1][nj][c + nc] %= mod
ans = 0
for i in range(300):
    ans += DP[n - 1][i][k]
    ans %= mod
print(ans)