N, M, K = map(int, input().split())
P = [0]*M
Q = [0]*M
C = [0]*M
for i in range(M):
    P[i],Q[i],C[i] = map(int, input().split())
dp = [[[0]*300 for _ in range(K+300)] for _ in range(N)]
mod = 10**9+7
for i in range(300):
    dp[0][0][i] = 1
for n in range(N-1):
    for k in range(K+1):
        for i in range(300):
            dp[n][k][i] %= mod
        for i in range(M):
            dp[n+1][k+C[i]][Q[i]-1] += dp[n][k][P[i]-1]
ans = sum(dp[-1][K])%mod
print(ans)