#include <iostream>
#include <string>
#include <algorithm>
#include <set>
#include <map>
#include <cmath>
#include <vector>
#include <numeric>
//#include <tuple>
#include <cstdio>

using namespace std;

typedef long long ll;


#define rep(i,b) for(ll i=0;i<(b);++i)
#define rep1(i,b) for(ll i=1;i<=(b);++i)
#define vec vector
#define debug(x) cerr << #x << " = " << (x) << " (L" << __LINE__ << ")" << endl;

int N, M;

int item1[80];
int item2[80];
int score[80];

int main() {
   cin >> N >> M;
   rep(i, M) {
      cin >> item1[i] >> item2[i] >> score[i];
   }
   vector<int> v(N);
   iota(v.begin(), v.end(), 0);
   int maxval = 0;
   int dp[11]; // 数字からindex
   do {
      int points = 0;
      rep(i, N) {
         dp[v[i]] = i;
      }
      rep(i, M) {
         if (dp[item1[i]] < dp[item2[i]]) points += score[i];
      }
      maxval = max({maxval, points});
      // for (auto x: v) cout << x << " "; cout << "\n";
   } while ( next_permutation(v.begin(), v.end()));
   cout << maxval << endl;
}