mod = 1000000007
eps = 10**-9


def main():
    import sys
    input = sys.stdin.readline

    N, M, K = map(int, input().split())
    dp = [[0] * (K+1) for _ in range(301)]
    for p in range(1, 301):
        dp[p][0] = 1
    code = []
    for _ in range(M):
        code.append(tuple(map(int, input().split())))
    for _ in range(N-1):
        dp_new = [[0] * (K+1) for _ in range(301)]
        for p, q, c in code:
            for k in range(K+1):
                if k + c <= K:
                    dp_new[q][k+c] = (dp_new[q][k+c] + dp[p][k])%mod
        dp = dp_new
    ans = 0
    for q in range(1, 301):
        ans = (ans + dp[q][K])%mod
    print(ans)


if __name__ == '__main__':
    main()