#!/usr/bin/env python3

import sys
input=sys.stdin.readline

N,M,K=map(int,input().split())
edges=[[] for _ in range(301)]
s=set()
for _ in range(M):
    p,q,c=map(int,input().split())
    edges[p].append((q,c))
    s.add(p)
dp=[[[0]*(K+1) for _ in range(301)] for _ in range(N+1)]
for i in range(301):
    if i not in s:
        dp[1][i][0]=0
    else:
        dp[1][i][0]=1
for i in range(1,N):
    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][i][K]
print(ans)