#include <iostream>
#include <algorithm>
#include <vector>
using namespace std;

int main(){
	int ans = 0,n,m;
	cin >> n >> m;
	vector<int> arr(n);
	for(int i = 0;i < n;i++) arr[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;
	}
	do{
		int tmp = 0;
		for(int i = 0;i < n;i++) for(int j = i + 1;j < n;j++) tmp += table[arr[i]][arr[j]];
		ans = max(ans,tmp);
	}while(next_permutation(arr.begin(),arr.end()));
	cout << ans << endl;
}