MOD = 10 ** 9 + 7

n, m, k = map(int, input().split())
edges = [[] for _ in range(300)]
for _ in range(m):
    u, v, c = map(int, input().split())
    u -= 1
    v -= 1
    edges[u].append((v, c))

cnt = [[0] * (k + 1) for _ in range(300)]
for i in range(300):
    cnt[i][0] = 1

for _ in range(n - 1):
    cnt2 = [[0] * (k + 1) for _ in range(300)]
    for i in range(300):
        for j in range(k + 1):
            for l, c in edges[i]:
                if j + c <= k:
                    cnt2[l][j + c] += cnt[i][j]
                    cnt2[l][j + c] %= MOD
    cnt = [row[:] for row in cnt2]
ans = 0
for i in range(300):
    ans += cnt[i][-1]
    ans %= MOD
print(ans)