#!/usr/bin/env python3

import sys
input=sys.stdin.readline

N,M,K=map(int,input().split())
arr=[list(map(int,input().split())) for _ in range(M)]
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 range(M):
        p,q,c=arr[j]
        for k in range(K-c,-1,-1):
            dp[i+1][q][k+c]+=dp[i][p][k]
ans=0
for i in range(301):
    ans+=dp[N-1][i][K]
print(ans)