N, M, K = map(int, input().split())
PQC = [list(map(int, input().split())) for _ in range(M)]
MOD = 10**9 + 7

d = dict()
for i in range(M):
    p, q, c = PQC[i]
    p -= 1
    q -= 1
    if p not in d:
        d[p] = []
    d[p].append((q, c))

dp = [[[0]*(K+1) for _ in range(300)] for _ in range(N+1)]
for i in range(300):
    if i in d:
        dp[1][i][0] = 1
for i in range(1, N):
    for j in range(300):
        if j not in d:
            continue
        for k in range(K+1):
            if dp[i][j][k] == 0:
                continue
            for x, y in d[j]:
                if k+y <= K:
                    dp[i+1][x][k+y] += dp[i][j][k]
                    dp[i+1][x][k+y] %= MOD
                    
ans = 0
for i in range(300):
    ans += dp[N][i][K]
    ans %= MOD
print(ans)