#include<bits/stdc++.h>
using namespace std;
using Int = long long;
template<typename T1,typename T2> inline void chmin(T1 &a,T2 b){if(a>b) a=b;}
template<typename T1,typename T2> inline void chmax(T1 &a,T2 b){if(a<b) a=b;}

//INSERT ABOVE HERE
int co[11][11];
signed main(){
  int n,m;
  cin>>n>>m;
  memset(co,0,sizeof(co));
  for(int i=0;i<m;i++){
    int x,y,z;
    cin>>x>>y>>z;
    co[x][y]=z;
  }
  vector<int> v(n);
  iota(v.begin(),v.end(),0);
  int ans=0;
  do{
    int res=0;
    for(int i=0;i<n;i++)
      for(int j=i+1;j<n;j++)
	res+=co[v[i]][v[j]];
    chmax(ans,res);
  }while(next_permutation(v.begin(),v.end()));
  cout<<ans<<endl;
  return 0;
}