N = 300
n,m,k = map(int,input().split())
g = [[] for _ in range(N)]
for _ in range(m):
    p,q,c = map(int,input().split())
    g[p-1].append((q-1,c))

MOD = 10**9+7
dp = [[0]*(k+1) for _ in range(N)]
for i in range(N):
    dp[i][0] = 1

for _ in range(n-1):
    ndp = [[0]*(k+1) for _ in range(N)]
    for i in range(N):
        for j,v in enumerate(dp[i]):
            if v==0: continue
            for q,c in g[i]:
                if j+c > k: continue
                ndp[q][j+c] += v
                ndp[q][j+c] %= MOD
    dp = ndp

ans = 0
for i in range(N):
    ans += dp[i][-1]
print(ans%MOD)