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

int main() {
    int N, M, it1[100], it2[100], scr[100];
    cin >> N >> M;
    for (int i = 0; i < M; i++) {
        cin >> it1[i] >> it2[i] >> scr[i];
    }

    vector<int> V(N);
    for (int i = 0; i < N; i++) {
        V[i] = i;
    }

    int ans = 0;
    do {
        int score = 0;
        for (int i = 0; i < M; i++) {
            if (V[it1[i]] < V[it2[i]])
                score += scr[i];
        }
        ans = max(ans, score);
    } while (next_permutation(V.begin(), V.end()));

    cout << ans << endl;
}