def main():
    N, M, K = list(map(int,input().split()))

    pqc = [[] * 301 for _ in range(301)]
    m = 10**9 + 7

    for _ in range(M):
        P, Q, C = map(int,input().split())
        pqc[P].append((Q,C))

    t = [{0:1} for _ in range(301)]
    for i in range(N-1):
        nt = [{} for _ in range(301)]
        for j in range(1,301):
            for k in t[j]:
                for q, c in pqc[j]:
                    v = k + c
                    if v <= K:
                        nt[q].setdefault(v, 0)
                        nt[q][v] += t[j][k]
                        nt[q][v] %= m
        t = nt

    result = 0
    for i in range(1,301):
        t[i].setdefault(K,0)
        result += t[i][K]
        result %= m

    print(result)

main()