#include <iostream>
#include <vector>
#include <algorithm>

int main() {
    std::ios::sync_with_stdio(false);
    std::cin.tie(0);
    
    int n, m, ans = -1;
    std::cin >> n >> m;
    std::vector<std::vector<int>> item(n, std::vector<int>(n, 0));
    for(int i=0; i<m; ++i){
        int item1, item2, score;
        std::cin >> item1 >> item2 >> score;
        item[item1][item2] = score;
    }
    std::vector<int> num(n);
    for(int i=0; i<n; ++i){
        num[i] = i;
    }
    do{
        int tmp=0;
        for(int i=0; i<n-1; ++i){
            for(int j=i; j<n; ++j){
                tmp += item[num[i]][num[j]];
            }
        }
        ans = std::max(tmp, ans);
    }while(std::next_permutation(num.begin(), num.end()));
    std::cout << ans << "\n";
    
    return 0;
}