#!/usr/bin/env python3

import sys
input=sys.stdin.readline

N,M,K=map(int,input().split())
edges=[[] for _ in range(301)]
s1=set()
s2=set()
for _ in range(M):
    p,q,c=map(int,input().split())
    edges[p].append((q,c))
    s1.add(p)
    s2.add(q)
s=list(s1&s2)
dp=[[[0]*(K+1) for _ in range(301)] for _ in range(N)]
for i in range(301):
    dp[0][i][0]=1
for i in range(N-1):
    for j in s:
        for q,c in edges[j]:
            for k in range(K-c,-1,-1):
                dp[i+1][q][k+c]+=dp[i][j][k]
ans=0
for i in range(301):
    ans+=dp[N-1][i][K]
print(ans)