#define _USE_MATH_DEFINES

#include <iostream>
#include <iomanip>

#include <algorithm>
#include <cmath>

#include <string>
#include <list>
#include <queue>
#include <vector>
#include <complex>

/////////
#define REP(i, x, n) for(int i = x; i < n; i++)
#define rep(i,n) REP(i,0,n)
#define P(p) std::cout<<(p)<<std::endl;
/////////
typedef long long LL;
typedef long double LD;
/////////
using namespace::std;
/////////
int rg[9][9];

int main(void){
    std::cin.tie(0);
    std::ios::sync_with_stdio(false);
    std::cout << std::fixed;//
    //cout << setprecision(6);//
	
	int N,M;
	cin>>N>>M;
	
	int a,b,c;
	rep(i,N)rep(j,N)rg[i][j]=0;
	rep(i,M){
		cin>>a>>b>>c;
		rg[a][b] = c;
	}
	
	vector<int> data;
	rep(i,N){
		data.push_back(i);
	}
	int ans=-1;
	int temp;
	do{
		temp = 0;
		rep(i,N){
			for(int k=i+1;k<N;++k){
				temp += rg[ data[i] ][ data[k] ];
			}
		}
		if(ans < temp){
			ans = temp;
		}
	}while(next_permutation(data.begin(),data.end()));

	P(ans);
	return 0;
}