using System;
using System.Collections.Generic;
using System.Linq;

namespace No90_1{
    public class Program{
        public static void Main(string[] args){
            var input = ReadList(Convert.ToInt32);
            var n = input[0];
            var m = input[1];

            var score = new List<List<int>>();
            for(var i = 0; i < m; i++){
                score.Add(ReadList(Convert.ToInt32));
            }

            var stack = new Stack<int>();
            var max = 0;

            Action<int> act = null;
            act = cnt =>{
                for(var i = 0; i < n; i++) {
                    if(!stack.Contains(i)) {
                        stack.Push(i);
                    } else {
                        continue;
                    }
                    act(cnt + 1);
                    stack.Pop();
                }

                if(cnt == n){
                    var tmpList = score.ToList();
                    var point = 0;
                    foreach(var s in stack){
                        point += tmpList.Where(item => item[0] == s).Sum(item => item[2]);
                        tmpList.RemoveAll(item => item[0] == s || item[1] == s);
                    }
                    max = Math.Max(max, point);
                }
            };
            act(0);

            Console.WriteLine(max);
        }

        public static TOutput Read<TOutput>(Converter<string, TOutput> converter){
            return converter(Console.ReadLine());
        }

        public static List<TOutput> ReadList<TOutput>(Converter<string, TOutput> converter, char c = ' '){
            return Console.ReadLine()?.Split(c).ToList().ConvertAll(converter);
        }
    }
}