import sys

read = sys.stdin.buffer.read
readline = sys.stdin.buffer.readline
readlines = sys.stdin.buffer.readlines

mod = 10 ** 9 + 7
n, m, k = map(int, readline().split())
mm = map(int, read().split())
PQC = zip(mm, mm, mm)

jisho = [{} for _ in range(300)]

for p, q, c in PQC:
    p -= 1
    q -= 1
    jisho[p][q] = c

# dp[i][j][k]: i番目まで前がjで、合計kとなる組み合わせ
dp = [[[0] * (k + 1) for _ in range(300)] for _ in range(n)]

for j in range(300):
    dp[0][j][0] = 1
for i in range(n - 1):
    for j in range(300):
        for a in range(k + 1):
            ni = i + 1
            dic = jisho[j]
            for idx, val in dic.items():
                if val + a > k:
                    continue
                nj = idx
                na = val + a
                dp[ni][nj][na] += dp[i][j][a]
                dp[ni][nj][na] %= mod
ans = 0
for j in range(300):
    ans += dp[-1][j][k]
print(ans)