#include <bits/stdc++.h>
using namespace std;

template <typename T, typename U> void cmin(T &a, U b) {
  if (a > b) a = b;
}
template <typename T, typename U> void cmax(T &a, U b) {
  if (a < b) a = b;
}

signed main() {
  cin.tie(nullptr);
  ios_base::sync_with_stdio(false);

  long N, M;
  cin >> N >> M;
  vector<tuple<long, long, long>> V(M);
  for (long i = 0; i < M; i++) {
    long a, b, c;
    cin >> a >> b >> c;
    V.at(i) = {a, b, c};
  }

  vector<long> A(N);
  iota(A.begin(), A.end(), 0);
  long ans = 0;
  do {
    long tmp = 0;
    for (long i = 0; i < M; i++) {
      auto [a, b, c] = V.at(i);
      long x = find(A.begin(), A.end(), a) - A.begin();
      long y = find(A.begin(), A.end(), b) - A.begin();
      if (x < y) tmp += c;
    }
    cmax(ans, tmp);
  } while (next_permutation(A.begin(), A.end()));

  cout << ans << "\n";
}