N,M,K = map(int, input().split())
lsPOC = [[] for i in range(300)]
mod = 10**9+7
for i in range(M):
    P,O,C = map(int, input().split())
    P -= 1
    O -= 1
    lsPOC[P].append((O,C))
dp = [[0]*300 for i in range(K+1)]
dp[0] = [1]*300
for i in range(1,N):
    dp2 = [[0]*300 for i in range(K+1)]
    for j in range(300):
        for q,c in lsPOC[j]:
            for k in range(K+1):
                if c+k <= K:
                    dp2[c+k][q] += dp[k][j]
                    dp2[c+k][q] %= mod
    dp = dp2
print(sum(dp[K])%mod)