#include <bits/stdc++.h>
#include <climits>
using namespace std;


int main(){
    int N, M;
    cin >> N >> M;
    
    int score[100][100] = {};
    for(int i = 0;i < M; i++){
            int a,b,c;
            cin>>a>>b>>c;
            score[a][b]=c;
    }
    
    int ans=0;
    vector<int> v;
    for(int i = 0; i < N; i++){
            v.push_back(i);
    }

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