import sys
input=sys.stdin.readline
def I(): return int(input())
def MI(): return map(int, input().split())
def LI(): return list(map(int, input().split()))

def main():
    mod=10**9+7
    N,M,K=MI()
    MM=300
    dp=[[[0]*(K+1) for _ in range(MM)]for _ in range(N)]
    #i個使った，j番目にいる，合計k
    
    for j in range(MM):
        dp[0][j][0]=1
    
    
    pqc=[]
    for i in range(M):
        p,q,c=MI()
        p-=1
        q-=1
        pqc.append((p,q,c))
        
    for i in range(N-1):
        for jj in range(M):
            fro=pqc[jj][0]
            to=pqc[jj][1]
            cost=pqc[jj][2]
            for k in range(K+1-cost):
                dp[i+1][to][k+cost]=(dp[i+1][to][k+cost] + dp[i][fro][k])%mod
                
    ans=0
    for j in range(MM):
        ans=(ans + dp[-1][j][-1])%mod
        
    print(ans)
        


main()