#include<iostream>
#include<algorithm>
#include<string>
#include<vector>
#include<iomanip>
#define RREP(i,s,e) for (i = s; i >= e; i--)
#define rrep(i,n) RREP(i,n,0)
#define REP(i,s,e) for (i = s; i < e; i++)
#define rep(i,n) REP(i,0,n)
#define INF 100000000
using namespace std;

int main(){
	int n, m;
	int mat[100][100];
	cin >> n >> m;
	int item1[100], item2[100], score[100];
	int i;
	rep(i,m){
		cin >> item1[i] >> item2[i] >> score[i];
		mat[item1[i]][item2[i]] = score[i];
	}

	int v[10];
	rep(i,n)
		v[i] = i;
	int ans = 0;
	do{
		int temp = 0;
		int x,y;
		rep(x,n)
			rep(y,x)
				temp += mat[v[y]][v[x]];

		ans = max(ans, temp);

	}while(std::next_permutation(v, v+n));

	cout << ans <<endl;
	return 0;

}