import sys
input = sys.stdin.readline

mod=10**9+7

N,M,K=map(int,input().split())

E=[[] for i in range(301)]

for i in range(M):
    p,q,c=map(int,input().split())
    E[p].append((q,c))

DP=dict()
for i in range(1,301):
    DP[(i,0)]=1

for i in range(N-1):
    NDP=dict()

    for i,now in DP:
        for to,cost in E[i]:
            if now+cost<=K:
                if (to,now+cost) in NDP:
                    NDP[to,now+cost]+=DP[i,now]
                    NDP[to,now+cost]%=mod
                else:
                    NDP[to,now+cost]=DP[i,now]

    DP=NDP
                    
ANS=0
for i,c in DP:
    if c==K:
        ANS=(ANS+DP[i,c])%mod
print(ANS)