#include <iostream>
#include <cstdio>
#include <cstring>
#include <vector>
#include <climits>
#include <algorithm>
#include <cmath>
#include <cstdlib>
#include <stack>
#include <queue>
#include <string>
#include <map>
#include <set>
#include <sstream>
#include <functional>
#include <ctime>
using namespace std;
typedef long long ll;
typedef unsigned long long ull;
typedef pair<int, int> PII;
#define FOR(i,a,b) for(int i=(a);i<(b);i++)
#define REP(i,n)  FOR(i,0,n)
#define CLEAR(d) memset((d), 0, (sizeof((d))))
#define ALL(c) (c).begin(), (c).end()
#define ABS(x) ((x < 0) ? -(x) : (x))
#define SORT(x) sort((x).begin(), (x).end())
#define RSORT(x) sort((x).begin(), (x).end(), greater<int>() )
#define SIZE(a) ((int)((a).size()))
#define MOD 1000000007
#define EPS 1e-10
#define PI  (acos(-1))
#define INF 10000000
struct edge { int to; int cost; };
//===================================================

int main()
{
    int n, m, ans = 0;
    cin >> n >> m;
    vector<int> item1(m), item2(m), score(m);
    REP(i, m) {
        cin >> item1[i] >> item2[i] >> score[i];
    }
    vector<int> data;
    REP(i, n) data.push_back(i);
    do{
        int sum = 0;
        int use[10] = { 0 };
        CLEAR(use);
        for (int i = 0; i < data.size(); i++) {
            use[data[i]] = 1;
            if (i == 0) {
                continue;
            }
            for (int j = 0; j < m; j++) {
                if (item1[j] != data[i]) continue;
                if (use[item2[j]] == 1) sum += score[j];
            }
        }
        ans = max(ans, sum);
    } while (next_permutation(data.begin(), data.end()));
    cout << ans << endl;

    return 0;
}