import std.stdio, std.conv, std.math, std.string, std.range, std.array,
       std.algorithm;

void main(){
  auto buf = readln().strip().split().map!(to!int)();
  immutable N = buf[0];
  immutable M = buf[1];

  int[10][10] map;
  
  foreach(immutable int i; 0 .. M) {
    auto buf2 = readln().strip().split().map!(to!int)();
    map[buf2[0]][buf2[1]] = buf2[2];
  }


  int[] a = iota(0, N).array();

  int ans;
  do {
    int t;
    foreach(immutable int i; 0 .. N) {
      foreach(immutable int j; i+1 .. N) {
        t += map[a[i]][a[j]];
      }
    }
    ans = max(ans, t);
  } while (nextPermutation(a));

  writeln(ans);
}