#include <iostream>
#include <vector>
#include <algorithm>
#include <string>
#include <sstream>
#include <cmath>

using namespace std;

int n;
int item[10][10];

int main() {

	cin >> n;

	vector<int> nums;

	int m;
	cin >> m;

	for (int i = 0; i < n; i++) {
		nums.push_back(i);
	}
	int Item1, Item2, score;
	for (int i = 0; i < m; i++) {
		cin >> Item1 >> Item2 >> score;

		item[Item1][Item2] = score;
	}

	int ans = 0;
	int tmp = 0;
	do {
/*		for (int i = 0; i < nums.size(); i++) {
			cout << nums[i] << " ";
		}
		cout << endl;*/
		for (int i = 0; i < nums.size() - 1; i++) {
		for(int k=1+i; k<nums.size();k++){
			tmp += item[nums[i]][nums[k]];
		}
	}

	ans = max(ans, tmp);
	tmp = 0;
	;

} while (next_permutation(nums.begin(), nums.end()));

cout << ans << endl;
return 0;
}