import std.stdio, std.string, std.conv, std.array, std.algorithm;
import std.uni, std.range, std.math, std.container, std.datetime;
import core.bitop;

immutable long MOD = 1_000_000_007;

void main(){
    char[] buf; readln(buf);
    auto input = buf.split.to!(int[]);
    auto N = input[0], M = input[1];
    auto st = new int[][](N, N);

    foreach(i ; 0 .. M){
        readln(buf);
        input = buf.split.to!(int[]);
        auto a = input[0], b = input[1], score = input[2];
        st[a][b] = score;
    }

    int ans;

    foreach(p ; iota(N).permutations){
        int tmp;
        foreach(i ; 0 .. N){
            foreach(j ; i + 1 .. N){
                tmp += st[p[i]][p[j]];
            }
        }
        ans = max(tmp, ans);
    }

    writeln(ans);
}