#include <bits/stdc++.h>

using namespace std;

int main() {
    int n, m,score[9][9] = {}, ans = 0, tmp;
    cin >> n >> m;
    vector<int> item(n);
    for(int i = 0; i < n; i++) {
        item[i] = i;
    }
    for(int i = 0; i < m; i++) {
        int a, b, c;
        cin >> a >> b >> c;
        score[a][b] = c;
    }
    do{
        tmp = 0;
        for(int i = 0; i < n; i++) {
            for(int j = i + 1; j < n; j++) {
                tmp += score[item[i]][item[j]];
            }
        }
        ans = max(ans, tmp);
    }while(next_permutation(item.begin(), item.end()));
    cout << ans << endl;
    return 0;
}