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



int main(){
	int N, M;
	cin >> N >> M;
	vector<int> ar(N);
	for (int i = 0; i < N; i++)
	{
		ar[i] = i;
	}
	vector<vector<int>> table(N, vector<int>(N));
	for (int i = 0; i < M; i++)
	{
		int i1, i2, score;
		cin >> i1 >> i2 >> score;
		table[i1][i2] += score;
	}

	int ans = 0;
	do{
		int temp = 0;
		for (int i = 0; i < N; i++)
		{
			for (int j = i + 1; j < N; j++)
			{
				temp += table[ar[i]][ar[j]];
			}
		}
		ans = max(ans, temp);
	} while (next_permutation(ar.begin(), ar.end()));
	cout << ans << endl;
}